1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2012, 2013, NVIDIA CORPORATION. All rights reserved. 4 */ 5 6 #include <linux/slab.h> 7 #include <linux/io.h> 8 #include <linux/delay.h> 9 #include <linux/err.h> 10 #include <linux/clk.h> 11 #include <linux/clk-provider.h> 12 13 #include "clk.h" 14 15 #define PLL_BASE_BYPASS BIT(31) 16 #define PLL_BASE_ENABLE BIT(30) 17 #define PLL_BASE_REF_ENABLE BIT(29) 18 #define PLL_BASE_OVERRIDE BIT(28) 19 20 #define PLL_BASE_DIVP_SHIFT 20 21 #define PLL_BASE_DIVP_WIDTH 3 22 #define PLL_BASE_DIVN_SHIFT 8 23 #define PLL_BASE_DIVN_WIDTH 10 24 #define PLL_BASE_DIVM_SHIFT 0 25 #define PLL_BASE_DIVM_WIDTH 5 26 #define PLLU_POST_DIVP_MASK 0x1 27 28 #define PLL_MISC_DCCON_SHIFT 20 29 #define PLL_MISC_CPCON_SHIFT 8 30 #define PLL_MISC_CPCON_WIDTH 4 31 #define PLL_MISC_CPCON_MASK ((1 << PLL_MISC_CPCON_WIDTH) - 1) 32 #define PLL_MISC_LFCON_SHIFT 4 33 #define PLL_MISC_LFCON_WIDTH 4 34 #define PLL_MISC_LFCON_MASK ((1 << PLL_MISC_LFCON_WIDTH) - 1) 35 #define PLL_MISC_VCOCON_SHIFT 0 36 #define PLL_MISC_VCOCON_WIDTH 4 37 #define PLL_MISC_VCOCON_MASK ((1 << PLL_MISC_VCOCON_WIDTH) - 1) 38 39 #define OUT_OF_TABLE_CPCON 8 40 41 #define PMC_PLLP_WB0_OVERRIDE 0xf8 42 #define PMC_PLLP_WB0_OVERRIDE_PLLM_ENABLE BIT(12) 43 #define PMC_PLLP_WB0_OVERRIDE_PLLM_OVERRIDE BIT(11) 44 45 #define PLL_POST_LOCK_DELAY 50 46 47 #define PLLDU_LFCON_SET_DIVN 600 48 49 #define PLLE_BASE_DIVCML_SHIFT 24 50 #define PLLE_BASE_DIVCML_MASK 0xf 51 #define PLLE_BASE_DIVP_SHIFT 16 52 #define PLLE_BASE_DIVP_WIDTH 6 53 #define PLLE_BASE_DIVN_SHIFT 8 54 #define PLLE_BASE_DIVN_WIDTH 8 55 #define PLLE_BASE_DIVM_SHIFT 0 56 #define PLLE_BASE_DIVM_WIDTH 8 57 #define PLLE_BASE_ENABLE BIT(31) 58 59 #define PLLE_MISC_SETUP_BASE_SHIFT 16 60 #define PLLE_MISC_SETUP_BASE_MASK (0xffff << PLLE_MISC_SETUP_BASE_SHIFT) 61 #define PLLE_MISC_LOCK_ENABLE BIT(9) 62 #define PLLE_MISC_READY BIT(15) 63 #define PLLE_MISC_SETUP_EX_SHIFT 2 64 #define PLLE_MISC_SETUP_EX_MASK (3 << PLLE_MISC_SETUP_EX_SHIFT) 65 #define PLLE_MISC_SETUP_MASK (PLLE_MISC_SETUP_BASE_MASK | \ 66 PLLE_MISC_SETUP_EX_MASK) 67 #define PLLE_MISC_SETUP_VALUE (7 << PLLE_MISC_SETUP_BASE_SHIFT) 68 69 #define PLLE_SS_CTRL 0x68 70 #define PLLE_SS_CNTL_BYPASS_SS BIT(10) 71 #define PLLE_SS_CNTL_INTERP_RESET BIT(11) 72 #define PLLE_SS_CNTL_SSC_BYP BIT(12) 73 #define PLLE_SS_CNTL_CENTER BIT(14) 74 #define PLLE_SS_CNTL_INVERT BIT(15) 75 #define PLLE_SS_DISABLE (PLLE_SS_CNTL_BYPASS_SS | PLLE_SS_CNTL_INTERP_RESET |\ 76 PLLE_SS_CNTL_SSC_BYP) 77 #define PLLE_SS_MAX_MASK 0x1ff 78 #define PLLE_SS_MAX_VAL_TEGRA114 0x25 79 #define PLLE_SS_MAX_VAL_TEGRA210 0x21 80 #define PLLE_SS_INC_MASK (0xff << 16) 81 #define PLLE_SS_INC_VAL (0x1 << 16) 82 #define PLLE_SS_INCINTRV_MASK (0x3f << 24) 83 #define PLLE_SS_INCINTRV_VAL_TEGRA114 (0x20 << 24) 84 #define PLLE_SS_INCINTRV_VAL_TEGRA210 (0x23 << 24) 85 #define PLLE_SS_COEFFICIENTS_MASK \ 86 (PLLE_SS_MAX_MASK | PLLE_SS_INC_MASK | PLLE_SS_INCINTRV_MASK) 87 #define PLLE_SS_COEFFICIENTS_VAL_TEGRA114 \ 88 (PLLE_SS_MAX_VAL_TEGRA114 | PLLE_SS_INC_VAL |\ 89 PLLE_SS_INCINTRV_VAL_TEGRA114) 90 #define PLLE_SS_COEFFICIENTS_VAL_TEGRA210 \ 91 (PLLE_SS_MAX_VAL_TEGRA210 | PLLE_SS_INC_VAL |\ 92 PLLE_SS_INCINTRV_VAL_TEGRA210) 93 94 #define PLLE_AUX_PLLP_SEL BIT(2) 95 #define PLLE_AUX_USE_LOCKDET BIT(3) 96 #define PLLE_AUX_ENABLE_SWCTL BIT(4) 97 #define PLLE_AUX_SS_SWCTL BIT(6) 98 #define PLLE_AUX_SEQ_ENABLE BIT(24) 99 #define PLLE_AUX_SEQ_START_STATE BIT(25) 100 #define PLLE_AUX_PLLRE_SEL BIT(28) 101 #define PLLE_AUX_SS_SEQ_INCLUDE BIT(31) 102 103 #define XUSBIO_PLL_CFG0 0x51c 104 #define XUSBIO_PLL_CFG0_PADPLL_RESET_SWCTL BIT(0) 105 #define XUSBIO_PLL_CFG0_CLK_ENABLE_SWCTL BIT(2) 106 #define XUSBIO_PLL_CFG0_PADPLL_USE_LOCKDET BIT(6) 107 #define XUSBIO_PLL_CFG0_SEQ_ENABLE BIT(24) 108 #define XUSBIO_PLL_CFG0_SEQ_START_STATE BIT(25) 109 110 #define SATA_PLL_CFG0 0x490 111 #define SATA_PLL_CFG0_PADPLL_RESET_SWCTL BIT(0) 112 #define SATA_PLL_CFG0_PADPLL_USE_LOCKDET BIT(2) 113 #define SATA_PLL_CFG0_SEQ_ENABLE BIT(24) 114 #define SATA_PLL_CFG0_SEQ_START_STATE BIT(25) 115 116 #define PLLE_MISC_PLLE_PTS BIT(8) 117 #define PLLE_MISC_IDDQ_SW_VALUE BIT(13) 118 #define PLLE_MISC_IDDQ_SW_CTRL BIT(14) 119 #define PLLE_MISC_VREG_BG_CTRL_SHIFT 4 120 #define PLLE_MISC_VREG_BG_CTRL_MASK (3 << PLLE_MISC_VREG_BG_CTRL_SHIFT) 121 #define PLLE_MISC_VREG_CTRL_SHIFT 2 122 #define PLLE_MISC_VREG_CTRL_MASK (2 << PLLE_MISC_VREG_CTRL_SHIFT) 123 124 #define PLLCX_MISC_STROBE BIT(31) 125 #define PLLCX_MISC_RESET BIT(30) 126 #define PLLCX_MISC_SDM_DIV_SHIFT 28 127 #define PLLCX_MISC_SDM_DIV_MASK (0x3 << PLLCX_MISC_SDM_DIV_SHIFT) 128 #define PLLCX_MISC_FILT_DIV_SHIFT 26 129 #define PLLCX_MISC_FILT_DIV_MASK (0x3 << PLLCX_MISC_FILT_DIV_SHIFT) 130 #define PLLCX_MISC_ALPHA_SHIFT 18 131 #define PLLCX_MISC_DIV_LOW_RANGE \ 132 ((0x1 << PLLCX_MISC_SDM_DIV_SHIFT) | \ 133 (0x1 << PLLCX_MISC_FILT_DIV_SHIFT)) 134 #define PLLCX_MISC_DIV_HIGH_RANGE \ 135 ((0x2 << PLLCX_MISC_SDM_DIV_SHIFT) | \ 136 (0x2 << PLLCX_MISC_FILT_DIV_SHIFT)) 137 #define PLLCX_MISC_COEF_LOW_RANGE \ 138 ((0x14 << PLLCX_MISC_KA_SHIFT) | (0x38 << PLLCX_MISC_KB_SHIFT)) 139 #define PLLCX_MISC_KA_SHIFT 2 140 #define PLLCX_MISC_KB_SHIFT 9 141 #define PLLCX_MISC_DEFAULT (PLLCX_MISC_COEF_LOW_RANGE | \ 142 (0x19 << PLLCX_MISC_ALPHA_SHIFT) | \ 143 PLLCX_MISC_DIV_LOW_RANGE | \ 144 PLLCX_MISC_RESET) 145 #define PLLCX_MISC1_DEFAULT 0x000d2308 146 #define PLLCX_MISC2_DEFAULT 0x30211200 147 #define PLLCX_MISC3_DEFAULT 0x200 148 149 #define PMC_SATA_PWRGT 0x1ac 150 #define PMC_SATA_PWRGT_PLLE_IDDQ_VALUE BIT(5) 151 #define PMC_SATA_PWRGT_PLLE_IDDQ_SWCTL BIT(4) 152 153 #define PLLSS_MISC_KCP 0 154 #define PLLSS_MISC_KVCO 0 155 #define PLLSS_MISC_SETUP 0 156 #define PLLSS_EN_SDM 0 157 #define PLLSS_EN_SSC 0 158 #define PLLSS_EN_DITHER2 0 159 #define PLLSS_EN_DITHER 1 160 #define PLLSS_SDM_RESET 0 161 #define PLLSS_CLAMP 0 162 #define PLLSS_SDM_SSC_MAX 0 163 #define PLLSS_SDM_SSC_MIN 0 164 #define PLLSS_SDM_SSC_STEP 0 165 #define PLLSS_SDM_DIN 0 166 #define PLLSS_MISC_DEFAULT ((PLLSS_MISC_KCP << 25) | \ 167 (PLLSS_MISC_KVCO << 24) | \ 168 PLLSS_MISC_SETUP) 169 #define PLLSS_CFG_DEFAULT ((PLLSS_EN_SDM << 31) | \ 170 (PLLSS_EN_SSC << 30) | \ 171 (PLLSS_EN_DITHER2 << 29) | \ 172 (PLLSS_EN_DITHER << 28) | \ 173 (PLLSS_SDM_RESET) << 27 | \ 174 (PLLSS_CLAMP << 22)) 175 #define PLLSS_CTRL1_DEFAULT \ 176 ((PLLSS_SDM_SSC_MAX << 16) | PLLSS_SDM_SSC_MIN) 177 #define PLLSS_CTRL2_DEFAULT \ 178 ((PLLSS_SDM_SSC_STEP << 16) | PLLSS_SDM_DIN) 179 #define PLLSS_LOCK_OVERRIDE BIT(24) 180 #define PLLSS_REF_SRC_SEL_SHIFT 25 181 #define PLLSS_REF_SRC_SEL_MASK (3 << PLLSS_REF_SRC_SEL_SHIFT) 182 183 #define UTMIP_PLL_CFG1 0x484 184 #define UTMIP_PLL_CFG1_XTAL_FREQ_COUNT(x) (((x) & 0xfff) << 0) 185 #define UTMIP_PLL_CFG1_ENABLE_DLY_COUNT(x) (((x) & 0x1f) << 27) 186 #define UTMIP_PLL_CFG1_FORCE_PLL_ACTIVE_POWERDOWN BIT(12) 187 #define UTMIP_PLL_CFG1_FORCE_PLL_ENABLE_POWERDOWN BIT(14) 188 #define UTMIP_PLL_CFG1_FORCE_PLL_ENABLE_POWERUP BIT(15) 189 #define UTMIP_PLL_CFG1_FORCE_PLLU_POWERDOWN BIT(16) 190 #define UTMIP_PLL_CFG1_FORCE_PLLU_POWERUP BIT(17) 191 192 #define UTMIP_PLL_CFG2 0x488 193 #define UTMIP_PLL_CFG2_STABLE_COUNT(x) (((x) & 0xfff) << 6) 194 #define UTMIP_PLL_CFG2_ACTIVE_DLY_COUNT(x) (((x) & 0x3f) << 18) 195 #define UTMIP_PLL_CFG2_FORCE_PD_SAMP_A_POWERDOWN BIT(0) 196 #define UTMIP_PLL_CFG2_FORCE_PD_SAMP_A_POWERUP BIT(1) 197 #define UTMIP_PLL_CFG2_FORCE_PD_SAMP_B_POWERDOWN BIT(2) 198 #define UTMIP_PLL_CFG2_FORCE_PD_SAMP_B_POWERUP BIT(3) 199 #define UTMIP_PLL_CFG2_FORCE_PD_SAMP_C_POWERDOWN BIT(4) 200 #define UTMIP_PLL_CFG2_FORCE_PD_SAMP_C_POWERUP BIT(5) 201 #define UTMIP_PLL_CFG2_FORCE_PD_SAMP_D_POWERDOWN BIT(24) 202 #define UTMIP_PLL_CFG2_FORCE_PD_SAMP_D_POWERUP BIT(25) 203 #define UTMIP_PLL_CFG2_PHY_XTAL_CLOCKEN BIT(30) 204 205 #define UTMIPLL_HW_PWRDN_CFG0 0x52c 206 #define UTMIPLL_HW_PWRDN_CFG0_IDDQ_SWCTL BIT(0) 207 #define UTMIPLL_HW_PWRDN_CFG0_IDDQ_OVERRIDE BIT(1) 208 #define UTMIPLL_HW_PWRDN_CFG0_CLK_ENABLE_SWCTL BIT(2) 209 #define UTMIPLL_HW_PWRDN_CFG0_SEQ_IN_SWCTL BIT(4) 210 #define UTMIPLL_HW_PWRDN_CFG0_SEQ_RESET_INPUT_VALUE BIT(5) 211 #define UTMIPLL_HW_PWRDN_CFG0_USE_LOCKDET BIT(6) 212 #define UTMIPLL_HW_PWRDN_CFG0_SEQ_ENABLE BIT(24) 213 #define UTMIPLL_HW_PWRDN_CFG0_SEQ_START_STATE BIT(25) 214 215 #define PLLU_HW_PWRDN_CFG0 0x530 216 #define PLLU_HW_PWRDN_CFG0_CLK_SWITCH_SWCTL BIT(0) 217 #define PLLU_HW_PWRDN_CFG0_CLK_ENABLE_SWCTL BIT(2) 218 #define PLLU_HW_PWRDN_CFG0_USE_LOCKDET BIT(6) 219 #define PLLU_HW_PWRDN_CFG0_USE_SWITCH_DETECT BIT(7) 220 #define PLLU_HW_PWRDN_CFG0_SEQ_ENABLE BIT(24) 221 #define PLLU_HW_PWRDN_CFG0_IDDQ_PD_INCLUDE BIT(28) 222 223 #define XUSB_PLL_CFG0 0x534 224 #define XUSB_PLL_CFG0_UTMIPLL_LOCK_DLY 0x3ff 225 #define XUSB_PLL_CFG0_PLLU_LOCK_DLY (0x3ff << 14) 226 227 #define PLLU_BASE_CLKENABLE_USB BIT(21) 228 #define PLLU_BASE_OVERRIDE BIT(24) 229 230 #define pll_readl(offset, p) readl_relaxed(p->clk_base + offset) 231 #define pll_readl_base(p) pll_readl(p->params->base_reg, p) 232 #define pll_readl_misc(p) pll_readl(p->params->misc_reg, p) 233 #define pll_override_readl(offset, p) readl_relaxed(p->pmc + offset) 234 #define pll_readl_sdm_din(p) pll_readl(p->params->sdm_din_reg, p) 235 #define pll_readl_sdm_ctrl(p) pll_readl(p->params->sdm_ctrl_reg, p) 236 237 #define pll_writel(val, offset, p) writel_relaxed(val, p->clk_base + offset) 238 #define pll_writel_base(val, p) pll_writel(val, p->params->base_reg, p) 239 #define pll_writel_misc(val, p) pll_writel(val, p->params->misc_reg, p) 240 #define pll_override_writel(val, offset, p) writel(val, p->pmc + offset) 241 #define pll_writel_sdm_din(val, p) pll_writel(val, p->params->sdm_din_reg, p) 242 #define pll_writel_sdm_ctrl(val, p) pll_writel(val, p->params->sdm_ctrl_reg, p) 243 244 #define mask(w) ((1 << (w)) - 1) 245 #define divm_mask(p) mask(p->params->div_nmp->divm_width) 246 #define divn_mask(p) mask(p->params->div_nmp->divn_width) 247 #define divp_mask(p) (p->params->flags & TEGRA_PLLU ? PLLU_POST_DIVP_MASK :\ 248 mask(p->params->div_nmp->divp_width)) 249 #define sdm_din_mask(p) p->params->sdm_din_mask 250 #define sdm_en_mask(p) p->params->sdm_ctrl_en_mask 251 252 #define divm_shift(p) (p)->params->div_nmp->divm_shift 253 #define divn_shift(p) (p)->params->div_nmp->divn_shift 254 #define divp_shift(p) (p)->params->div_nmp->divp_shift 255 256 #define divm_mask_shifted(p) (divm_mask(p) << divm_shift(p)) 257 #define divn_mask_shifted(p) (divn_mask(p) << divn_shift(p)) 258 #define divp_mask_shifted(p) (divp_mask(p) << divp_shift(p)) 259 260 #define divm_max(p) (divm_mask(p)) 261 #define divn_max(p) (divn_mask(p)) 262 #define divp_max(p) (1 << (divp_mask(p))) 263 264 #define sdin_din_to_data(din) ((u16)((din) ? : 0xFFFFU)) 265 #define sdin_data_to_din(dat) (((dat) == 0xFFFFU) ? 0 : (s16)dat) 266 267 static struct div_nmp default_nmp = { 268 .divn_shift = PLL_BASE_DIVN_SHIFT, 269 .divn_width = PLL_BASE_DIVN_WIDTH, 270 .divm_shift = PLL_BASE_DIVM_SHIFT, 271 .divm_width = PLL_BASE_DIVM_WIDTH, 272 .divp_shift = PLL_BASE_DIVP_SHIFT, 273 .divp_width = PLL_BASE_DIVP_WIDTH, 274 }; 275 276 static void clk_pll_enable_lock(struct tegra_clk_pll *pll) 277 { 278 u32 val; 279 280 if (!(pll->params->flags & TEGRA_PLL_USE_LOCK)) 281 return; 282 283 if (!(pll->params->flags & TEGRA_PLL_HAS_LOCK_ENABLE)) 284 return; 285 286 val = pll_readl_misc(pll); 287 val |= BIT(pll->params->lock_enable_bit_idx); 288 pll_writel_misc(val, pll); 289 } 290 291 static int clk_pll_wait_for_lock(struct tegra_clk_pll *pll) 292 { 293 int i; 294 u32 val, lock_mask; 295 void __iomem *lock_addr; 296 297 if (!(pll->params->flags & TEGRA_PLL_USE_LOCK)) { 298 udelay(pll->params->lock_delay); 299 return 0; 300 } 301 302 lock_addr = pll->clk_base; 303 if (pll->params->flags & TEGRA_PLL_LOCK_MISC) 304 lock_addr += pll->params->misc_reg; 305 else 306 lock_addr += pll->params->base_reg; 307 308 lock_mask = pll->params->lock_mask; 309 310 for (i = 0; i < pll->params->lock_delay; i++) { 311 val = readl_relaxed(lock_addr); 312 if ((val & lock_mask) == lock_mask) { 313 udelay(PLL_POST_LOCK_DELAY); 314 return 0; 315 } 316 udelay(2); /* timeout = 2 * lock time */ 317 } 318 319 pr_err("%s: Timed out waiting for pll %s lock\n", __func__, 320 clk_hw_get_name(&pll->hw)); 321 322 return -1; 323 } 324 325 int tegra_pll_wait_for_lock(struct tegra_clk_pll *pll) 326 { 327 return clk_pll_wait_for_lock(pll); 328 } 329 330 static bool pllm_clk_is_gated_by_pmc(struct tegra_clk_pll *pll) 331 { 332 u32 val = readl_relaxed(pll->pmc + PMC_PLLP_WB0_OVERRIDE); 333 334 return (val & PMC_PLLP_WB0_OVERRIDE_PLLM_OVERRIDE) && 335 !(val & PMC_PLLP_WB0_OVERRIDE_PLLM_ENABLE); 336 } 337 338 static int clk_pll_is_enabled(struct clk_hw *hw) 339 { 340 struct tegra_clk_pll *pll = to_clk_pll(hw); 341 u32 val; 342 343 /* 344 * Power Management Controller (PMC) can override the PLLM clock 345 * settings, including the enable-state. The PLLM is enabled when 346 * PLLM's CaR state is ON and when PLLM isn't gated by PMC. 347 */ 348 if ((pll->params->flags & TEGRA_PLLM) && pllm_clk_is_gated_by_pmc(pll)) 349 return 0; 350 351 val = pll_readl_base(pll); 352 353 return val & PLL_BASE_ENABLE ? 1 : 0; 354 } 355 356 static void _clk_pll_enable(struct clk_hw *hw) 357 { 358 struct tegra_clk_pll *pll = to_clk_pll(hw); 359 u32 val; 360 361 if (pll->params->iddq_reg) { 362 val = pll_readl(pll->params->iddq_reg, pll); 363 val &= ~BIT(pll->params->iddq_bit_idx); 364 pll_writel(val, pll->params->iddq_reg, pll); 365 udelay(5); 366 } 367 368 if (pll->params->reset_reg) { 369 val = pll_readl(pll->params->reset_reg, pll); 370 val &= ~BIT(pll->params->reset_bit_idx); 371 pll_writel(val, pll->params->reset_reg, pll); 372 } 373 374 clk_pll_enable_lock(pll); 375 376 val = pll_readl_base(pll); 377 if (pll->params->flags & TEGRA_PLL_BYPASS) 378 val &= ~PLL_BASE_BYPASS; 379 val |= PLL_BASE_ENABLE; 380 pll_writel_base(val, pll); 381 382 if (pll->params->flags & TEGRA_PLLM) { 383 val = readl_relaxed(pll->pmc + PMC_PLLP_WB0_OVERRIDE); 384 val |= PMC_PLLP_WB0_OVERRIDE_PLLM_ENABLE; 385 writel_relaxed(val, pll->pmc + PMC_PLLP_WB0_OVERRIDE); 386 } 387 } 388 389 static void _clk_pll_disable(struct clk_hw *hw) 390 { 391 struct tegra_clk_pll *pll = to_clk_pll(hw); 392 u32 val; 393 394 val = pll_readl_base(pll); 395 if (pll->params->flags & TEGRA_PLL_BYPASS) 396 val &= ~PLL_BASE_BYPASS; 397 val &= ~PLL_BASE_ENABLE; 398 pll_writel_base(val, pll); 399 400 if (pll->params->flags & TEGRA_PLLM) { 401 val = readl_relaxed(pll->pmc + PMC_PLLP_WB0_OVERRIDE); 402 val &= ~PMC_PLLP_WB0_OVERRIDE_PLLM_ENABLE; 403 writel_relaxed(val, pll->pmc + PMC_PLLP_WB0_OVERRIDE); 404 } 405 406 if (pll->params->reset_reg) { 407 val = pll_readl(pll->params->reset_reg, pll); 408 val |= BIT(pll->params->reset_bit_idx); 409 pll_writel(val, pll->params->reset_reg, pll); 410 } 411 412 if (pll->params->iddq_reg) { 413 val = pll_readl(pll->params->iddq_reg, pll); 414 val |= BIT(pll->params->iddq_bit_idx); 415 pll_writel(val, pll->params->iddq_reg, pll); 416 udelay(2); 417 } 418 } 419 420 static void pll_clk_start_ss(struct tegra_clk_pll *pll) 421 { 422 if (pll->params->defaults_set && pll->params->ssc_ctrl_reg) { 423 u32 val = pll_readl(pll->params->ssc_ctrl_reg, pll); 424 425 val |= pll->params->ssc_ctrl_en_mask; 426 pll_writel(val, pll->params->ssc_ctrl_reg, pll); 427 } 428 } 429 430 static void pll_clk_stop_ss(struct tegra_clk_pll *pll) 431 { 432 if (pll->params->defaults_set && pll->params->ssc_ctrl_reg) { 433 u32 val = pll_readl(pll->params->ssc_ctrl_reg, pll); 434 435 val &= ~pll->params->ssc_ctrl_en_mask; 436 pll_writel(val, pll->params->ssc_ctrl_reg, pll); 437 } 438 } 439 440 static int clk_pll_enable(struct clk_hw *hw) 441 { 442 struct tegra_clk_pll *pll = to_clk_pll(hw); 443 unsigned long flags = 0; 444 int ret; 445 446 if (clk_pll_is_enabled(hw)) 447 return 0; 448 449 if (pll->lock) 450 spin_lock_irqsave(pll->lock, flags); 451 452 _clk_pll_enable(hw); 453 454 ret = clk_pll_wait_for_lock(pll); 455 456 pll_clk_start_ss(pll); 457 458 if (pll->lock) 459 spin_unlock_irqrestore(pll->lock, flags); 460 461 return ret; 462 } 463 464 static void clk_pll_disable(struct clk_hw *hw) 465 { 466 struct tegra_clk_pll *pll = to_clk_pll(hw); 467 unsigned long flags = 0; 468 469 if (pll->lock) 470 spin_lock_irqsave(pll->lock, flags); 471 472 pll_clk_stop_ss(pll); 473 474 _clk_pll_disable(hw); 475 476 if (pll->lock) 477 spin_unlock_irqrestore(pll->lock, flags); 478 } 479 480 static int _p_div_to_hw(struct clk_hw *hw, u8 p_div) 481 { 482 struct tegra_clk_pll *pll = to_clk_pll(hw); 483 const struct pdiv_map *p_tohw = pll->params->pdiv_tohw; 484 485 if (p_tohw) { 486 while (p_tohw->pdiv) { 487 if (p_div <= p_tohw->pdiv) 488 return p_tohw->hw_val; 489 p_tohw++; 490 } 491 return -EINVAL; 492 } 493 return -EINVAL; 494 } 495 496 int tegra_pll_p_div_to_hw(struct tegra_clk_pll *pll, u8 p_div) 497 { 498 return _p_div_to_hw(&pll->hw, p_div); 499 } 500 501 static int _hw_to_p_div(struct clk_hw *hw, u8 p_div_hw) 502 { 503 struct tegra_clk_pll *pll = to_clk_pll(hw); 504 const struct pdiv_map *p_tohw = pll->params->pdiv_tohw; 505 506 if (p_tohw) { 507 while (p_tohw->pdiv) { 508 if (p_div_hw == p_tohw->hw_val) 509 return p_tohw->pdiv; 510 p_tohw++; 511 } 512 return -EINVAL; 513 } 514 515 return 1 << p_div_hw; 516 } 517 518 static int _get_table_rate(struct clk_hw *hw, 519 struct tegra_clk_pll_freq_table *cfg, 520 unsigned long rate, unsigned long parent_rate) 521 { 522 struct tegra_clk_pll *pll = to_clk_pll(hw); 523 struct tegra_clk_pll_freq_table *sel; 524 int p; 525 526 for (sel = pll->params->freq_table; sel->input_rate != 0; sel++) 527 if (sel->input_rate == parent_rate && 528 sel->output_rate == rate) 529 break; 530 531 if (sel->input_rate == 0) 532 return -EINVAL; 533 534 if (pll->params->pdiv_tohw) { 535 p = _p_div_to_hw(hw, sel->p); 536 if (p < 0) 537 return p; 538 } else { 539 p = ilog2(sel->p); 540 } 541 542 cfg->input_rate = sel->input_rate; 543 cfg->output_rate = sel->output_rate; 544 cfg->m = sel->m; 545 cfg->n = sel->n; 546 cfg->p = p; 547 cfg->cpcon = sel->cpcon; 548 cfg->sdm_data = sel->sdm_data; 549 550 return 0; 551 } 552 553 static int _calc_rate(struct clk_hw *hw, struct tegra_clk_pll_freq_table *cfg, 554 unsigned long rate, unsigned long parent_rate) 555 { 556 struct tegra_clk_pll *pll = to_clk_pll(hw); 557 unsigned long cfreq; 558 u32 p_div = 0; 559 int ret; 560 561 switch (parent_rate) { 562 case 12000000: 563 case 26000000: 564 cfreq = (rate <= 1000000 * 1000) ? 1000000 : 2000000; 565 break; 566 case 13000000: 567 cfreq = (rate <= 1000000 * 1000) ? 1000000 : 2600000; 568 break; 569 case 16800000: 570 case 19200000: 571 cfreq = (rate <= 1200000 * 1000) ? 1200000 : 2400000; 572 break; 573 case 9600000: 574 case 28800000: 575 /* 576 * PLL_P_OUT1 rate is not listed in PLLA table 577 */ 578 cfreq = parent_rate / (parent_rate / 1000000); 579 break; 580 default: 581 pr_err("%s Unexpected reference rate %lu\n", 582 __func__, parent_rate); 583 BUG(); 584 } 585 586 /* Raise VCO to guarantee 0.5% accuracy */ 587 for (cfg->output_rate = rate; cfg->output_rate < 200 * cfreq; 588 cfg->output_rate <<= 1) 589 p_div++; 590 591 cfg->m = parent_rate / cfreq; 592 cfg->n = cfg->output_rate / cfreq; 593 cfg->cpcon = OUT_OF_TABLE_CPCON; 594 595 if (cfg->m == 0 || cfg->m > divm_max(pll) || 596 cfg->n > divn_max(pll) || (1 << p_div) > divp_max(pll) || 597 cfg->output_rate > pll->params->vco_max) { 598 return -EINVAL; 599 } 600 601 cfg->output_rate = cfg->n * DIV_ROUND_UP(parent_rate, cfg->m); 602 cfg->output_rate >>= p_div; 603 604 if (pll->params->pdiv_tohw) { 605 ret = _p_div_to_hw(hw, 1 << p_div); 606 if (ret < 0) 607 return ret; 608 else 609 cfg->p = ret; 610 } else 611 cfg->p = p_div; 612 613 return 0; 614 } 615 616 /* 617 * SDM (Sigma Delta Modulator) divisor is 16-bit 2's complement signed number 618 * within (-2^12 ... 2^12-1) range. Represented in PLL data structure as 619 * unsigned 16-bit value, with "0" divisor mapped to 0xFFFF. Data "0" is used 620 * to indicate that SDM is disabled. 621 * 622 * Effective ndiv value when SDM is enabled: ndiv + 1/2 + sdm_din/2^13 623 */ 624 static void clk_pll_set_sdm_data(struct clk_hw *hw, 625 struct tegra_clk_pll_freq_table *cfg) 626 { 627 struct tegra_clk_pll *pll = to_clk_pll(hw); 628 u32 val; 629 bool enabled; 630 631 if (!pll->params->sdm_din_reg) 632 return; 633 634 if (cfg->sdm_data) { 635 val = pll_readl_sdm_din(pll) & (~sdm_din_mask(pll)); 636 val |= sdin_data_to_din(cfg->sdm_data) & sdm_din_mask(pll); 637 pll_writel_sdm_din(val, pll); 638 } 639 640 val = pll_readl_sdm_ctrl(pll); 641 enabled = (val & sdm_en_mask(pll)); 642 643 if (cfg->sdm_data == 0 && enabled) 644 val &= ~pll->params->sdm_ctrl_en_mask; 645 646 if (cfg->sdm_data != 0 && !enabled) 647 val |= pll->params->sdm_ctrl_en_mask; 648 649 pll_writel_sdm_ctrl(val, pll); 650 } 651 652 static void _update_pll_mnp(struct tegra_clk_pll *pll, 653 struct tegra_clk_pll_freq_table *cfg) 654 { 655 u32 val; 656 struct tegra_clk_pll_params *params = pll->params; 657 struct div_nmp *div_nmp = params->div_nmp; 658 659 if ((params->flags & (TEGRA_PLLM | TEGRA_PLLMB)) && 660 (pll_override_readl(PMC_PLLP_WB0_OVERRIDE, pll) & 661 PMC_PLLP_WB0_OVERRIDE_PLLM_OVERRIDE)) { 662 val = pll_override_readl(params->pmc_divp_reg, pll); 663 val &= ~(divp_mask(pll) << div_nmp->override_divp_shift); 664 val |= cfg->p << div_nmp->override_divp_shift; 665 pll_override_writel(val, params->pmc_divp_reg, pll); 666 667 val = pll_override_readl(params->pmc_divnm_reg, pll); 668 val &= ~((divm_mask(pll) << div_nmp->override_divm_shift) | 669 (divn_mask(pll) << div_nmp->override_divn_shift)); 670 val |= (cfg->m << div_nmp->override_divm_shift) | 671 (cfg->n << div_nmp->override_divn_shift); 672 pll_override_writel(val, params->pmc_divnm_reg, pll); 673 } else { 674 val = pll_readl_base(pll); 675 676 val &= ~(divm_mask_shifted(pll) | divn_mask_shifted(pll) | 677 divp_mask_shifted(pll)); 678 679 val |= (cfg->m << divm_shift(pll)) | 680 (cfg->n << divn_shift(pll)) | 681 (cfg->p << divp_shift(pll)); 682 683 pll_writel_base(val, pll); 684 685 clk_pll_set_sdm_data(&pll->hw, cfg); 686 } 687 } 688 689 static void _get_pll_mnp(struct tegra_clk_pll *pll, 690 struct tegra_clk_pll_freq_table *cfg) 691 { 692 u32 val; 693 struct tegra_clk_pll_params *params = pll->params; 694 struct div_nmp *div_nmp = params->div_nmp; 695 696 *cfg = (struct tegra_clk_pll_freq_table) { }; 697 698 if ((params->flags & (TEGRA_PLLM | TEGRA_PLLMB)) && 699 (pll_override_readl(PMC_PLLP_WB0_OVERRIDE, pll) & 700 PMC_PLLP_WB0_OVERRIDE_PLLM_OVERRIDE)) { 701 val = pll_override_readl(params->pmc_divp_reg, pll); 702 cfg->p = (val >> div_nmp->override_divp_shift) & divp_mask(pll); 703 704 val = pll_override_readl(params->pmc_divnm_reg, pll); 705 cfg->m = (val >> div_nmp->override_divm_shift) & divm_mask(pll); 706 cfg->n = (val >> div_nmp->override_divn_shift) & divn_mask(pll); 707 } else { 708 val = pll_readl_base(pll); 709 710 cfg->m = (val >> div_nmp->divm_shift) & divm_mask(pll); 711 cfg->n = (val >> div_nmp->divn_shift) & divn_mask(pll); 712 cfg->p = (val >> div_nmp->divp_shift) & divp_mask(pll); 713 714 if (pll->params->sdm_din_reg) { 715 if (sdm_en_mask(pll) & pll_readl_sdm_ctrl(pll)) { 716 val = pll_readl_sdm_din(pll); 717 val &= sdm_din_mask(pll); 718 cfg->sdm_data = sdin_din_to_data(val); 719 } 720 } 721 } 722 } 723 724 static void _update_pll_cpcon(struct tegra_clk_pll *pll, 725 struct tegra_clk_pll_freq_table *cfg, 726 unsigned long rate) 727 { 728 u32 val; 729 730 val = pll_readl_misc(pll); 731 732 val &= ~(PLL_MISC_CPCON_MASK << PLL_MISC_CPCON_SHIFT); 733 val |= cfg->cpcon << PLL_MISC_CPCON_SHIFT; 734 735 if (pll->params->flags & TEGRA_PLL_SET_LFCON) { 736 val &= ~(PLL_MISC_LFCON_MASK << PLL_MISC_LFCON_SHIFT); 737 if (cfg->n >= PLLDU_LFCON_SET_DIVN) 738 val |= 1 << PLL_MISC_LFCON_SHIFT; 739 } else if (pll->params->flags & TEGRA_PLL_SET_DCCON) { 740 val &= ~(1 << PLL_MISC_DCCON_SHIFT); 741 if (rate >= (pll->params->vco_max >> 1)) 742 val |= 1 << PLL_MISC_DCCON_SHIFT; 743 } 744 745 pll_writel_misc(val, pll); 746 } 747 748 static int _program_pll(struct clk_hw *hw, struct tegra_clk_pll_freq_table *cfg, 749 unsigned long rate) 750 { 751 struct tegra_clk_pll *pll = to_clk_pll(hw); 752 struct tegra_clk_pll_freq_table old_cfg; 753 int state, ret = 0; 754 755 state = clk_pll_is_enabled(hw); 756 757 if (state && pll->params->pre_rate_change) { 758 ret = pll->params->pre_rate_change(); 759 if (WARN_ON(ret)) 760 return ret; 761 } 762 763 _get_pll_mnp(pll, &old_cfg); 764 765 if (state && pll->params->defaults_set && pll->params->dyn_ramp && 766 (cfg->m == old_cfg.m) && (cfg->p == old_cfg.p)) { 767 ret = pll->params->dyn_ramp(pll, cfg); 768 if (!ret) 769 goto done; 770 } 771 772 if (state) { 773 pll_clk_stop_ss(pll); 774 _clk_pll_disable(hw); 775 } 776 777 if (!pll->params->defaults_set && pll->params->set_defaults) 778 pll->params->set_defaults(pll); 779 780 _update_pll_mnp(pll, cfg); 781 782 if (pll->params->flags & TEGRA_PLL_HAS_CPCON) 783 _update_pll_cpcon(pll, cfg, rate); 784 785 if (state) { 786 _clk_pll_enable(hw); 787 ret = clk_pll_wait_for_lock(pll); 788 pll_clk_start_ss(pll); 789 } 790 791 done: 792 if (state && pll->params->post_rate_change) 793 pll->params->post_rate_change(); 794 795 return ret; 796 } 797 798 static int clk_pll_set_rate(struct clk_hw *hw, unsigned long rate, 799 unsigned long parent_rate) 800 { 801 struct tegra_clk_pll *pll = to_clk_pll(hw); 802 struct tegra_clk_pll_freq_table cfg, old_cfg; 803 unsigned long flags = 0; 804 int ret = 0; 805 806 if (pll->params->flags & TEGRA_PLL_FIXED) { 807 if (rate != pll->params->fixed_rate) { 808 pr_err("%s: Can not change %s fixed rate %lu to %lu\n", 809 __func__, clk_hw_get_name(hw), 810 pll->params->fixed_rate, rate); 811 return -EINVAL; 812 } 813 return 0; 814 } 815 816 if (_get_table_rate(hw, &cfg, rate, parent_rate) && 817 pll->params->calc_rate(hw, &cfg, rate, parent_rate)) { 818 pr_err("%s: Failed to set %s rate %lu\n", __func__, 819 clk_hw_get_name(hw), rate); 820 WARN_ON(1); 821 return -EINVAL; 822 } 823 if (pll->lock) 824 spin_lock_irqsave(pll->lock, flags); 825 826 _get_pll_mnp(pll, &old_cfg); 827 if (pll->params->flags & TEGRA_PLL_VCO_OUT) 828 cfg.p = old_cfg.p; 829 830 if (old_cfg.m != cfg.m || old_cfg.n != cfg.n || old_cfg.p != cfg.p || 831 old_cfg.sdm_data != cfg.sdm_data) 832 ret = _program_pll(hw, &cfg, rate); 833 834 if (pll->lock) 835 spin_unlock_irqrestore(pll->lock, flags); 836 837 return ret; 838 } 839 840 static long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate, 841 unsigned long *prate) 842 { 843 struct tegra_clk_pll *pll = to_clk_pll(hw); 844 struct tegra_clk_pll_freq_table cfg; 845 846 if (pll->params->flags & TEGRA_PLL_FIXED) { 847 /* PLLM/MB are used for memory; we do not change rate */ 848 if (pll->params->flags & (TEGRA_PLLM | TEGRA_PLLMB)) 849 return clk_hw_get_rate(hw); 850 return pll->params->fixed_rate; 851 } 852 853 if (_get_table_rate(hw, &cfg, rate, *prate) && 854 pll->params->calc_rate(hw, &cfg, rate, *prate)) 855 return -EINVAL; 856 857 return cfg.output_rate; 858 } 859 860 static unsigned long clk_pll_recalc_rate(struct clk_hw *hw, 861 unsigned long parent_rate) 862 { 863 struct tegra_clk_pll *pll = to_clk_pll(hw); 864 struct tegra_clk_pll_freq_table cfg; 865 u32 val; 866 u64 rate = parent_rate; 867 int pdiv; 868 869 val = pll_readl_base(pll); 870 871 if ((pll->params->flags & TEGRA_PLL_BYPASS) && (val & PLL_BASE_BYPASS)) 872 return parent_rate; 873 874 if ((pll->params->flags & TEGRA_PLL_FIXED) && 875 !(pll->params->flags & (TEGRA_PLLM | TEGRA_PLLMB)) && 876 !(val & PLL_BASE_OVERRIDE)) { 877 struct tegra_clk_pll_freq_table sel; 878 if (_get_table_rate(hw, &sel, pll->params->fixed_rate, 879 parent_rate)) { 880 pr_err("Clock %s has unknown fixed frequency\n", 881 clk_hw_get_name(hw)); 882 BUG(); 883 } 884 return pll->params->fixed_rate; 885 } 886 887 _get_pll_mnp(pll, &cfg); 888 889 if (pll->params->flags & TEGRA_PLL_VCO_OUT) { 890 pdiv = 1; 891 } else { 892 pdiv = _hw_to_p_div(hw, cfg.p); 893 if (pdiv < 0) { 894 WARN(1, "Clock %s has invalid pdiv value : 0x%x\n", 895 clk_hw_get_name(hw), cfg.p); 896 pdiv = 1; 897 } 898 } 899 900 if (pll->params->set_gain) 901 pll->params->set_gain(&cfg); 902 903 cfg.m *= pdiv; 904 905 rate *= cfg.n; 906 do_div(rate, cfg.m); 907 908 return rate; 909 } 910 911 static int clk_plle_training(struct tegra_clk_pll *pll) 912 { 913 u32 val; 914 unsigned long timeout; 915 916 if (!pll->pmc) 917 return -ENOSYS; 918 919 /* 920 * PLLE is already disabled, and setup cleared; 921 * create falling edge on PLLE IDDQ input. 922 */ 923 val = readl(pll->pmc + PMC_SATA_PWRGT); 924 val |= PMC_SATA_PWRGT_PLLE_IDDQ_VALUE; 925 writel(val, pll->pmc + PMC_SATA_PWRGT); 926 927 val = readl(pll->pmc + PMC_SATA_PWRGT); 928 val |= PMC_SATA_PWRGT_PLLE_IDDQ_SWCTL; 929 writel(val, pll->pmc + PMC_SATA_PWRGT); 930 931 val = readl(pll->pmc + PMC_SATA_PWRGT); 932 val &= ~PMC_SATA_PWRGT_PLLE_IDDQ_VALUE; 933 writel(val, pll->pmc + PMC_SATA_PWRGT); 934 935 val = pll_readl_misc(pll); 936 937 timeout = jiffies + msecs_to_jiffies(100); 938 while (1) { 939 val = pll_readl_misc(pll); 940 if (val & PLLE_MISC_READY) 941 break; 942 if (time_after(jiffies, timeout)) { 943 pr_err("%s: timeout waiting for PLLE\n", __func__); 944 return -EBUSY; 945 } 946 udelay(300); 947 } 948 949 return 0; 950 } 951 952 static int clk_plle_enable(struct clk_hw *hw) 953 { 954 struct tegra_clk_pll *pll = to_clk_pll(hw); 955 struct tegra_clk_pll_freq_table sel; 956 unsigned long input_rate; 957 u32 val; 958 int err; 959 960 if (clk_pll_is_enabled(hw)) 961 return 0; 962 963 input_rate = clk_hw_get_rate(clk_hw_get_parent(hw)); 964 965 if (_get_table_rate(hw, &sel, pll->params->fixed_rate, input_rate)) 966 return -EINVAL; 967 968 clk_pll_disable(hw); 969 970 val = pll_readl_misc(pll); 971 val &= ~(PLLE_MISC_LOCK_ENABLE | PLLE_MISC_SETUP_MASK); 972 pll_writel_misc(val, pll); 973 974 val = pll_readl_misc(pll); 975 if (!(val & PLLE_MISC_READY)) { 976 err = clk_plle_training(pll); 977 if (err) 978 return err; 979 } 980 981 if (pll->params->flags & TEGRA_PLLE_CONFIGURE) { 982 /* configure dividers */ 983 val = pll_readl_base(pll); 984 val &= ~(divp_mask_shifted(pll) | divn_mask_shifted(pll) | 985 divm_mask_shifted(pll)); 986 val &= ~(PLLE_BASE_DIVCML_MASK << PLLE_BASE_DIVCML_SHIFT); 987 val |= sel.m << divm_shift(pll); 988 val |= sel.n << divn_shift(pll); 989 val |= sel.p << divp_shift(pll); 990 val |= sel.cpcon << PLLE_BASE_DIVCML_SHIFT; 991 pll_writel_base(val, pll); 992 } 993 994 val = pll_readl_misc(pll); 995 val |= PLLE_MISC_SETUP_VALUE; 996 val |= PLLE_MISC_LOCK_ENABLE; 997 pll_writel_misc(val, pll); 998 999 val = readl(pll->clk_base + PLLE_SS_CTRL); 1000 val &= ~PLLE_SS_COEFFICIENTS_MASK; 1001 val |= PLLE_SS_DISABLE; 1002 writel(val, pll->clk_base + PLLE_SS_CTRL); 1003 1004 val = pll_readl_base(pll); 1005 val |= (PLL_BASE_BYPASS | PLL_BASE_ENABLE); 1006 pll_writel_base(val, pll); 1007 1008 clk_pll_wait_for_lock(pll); 1009 1010 return 0; 1011 } 1012 1013 static unsigned long clk_plle_recalc_rate(struct clk_hw *hw, 1014 unsigned long parent_rate) 1015 { 1016 struct tegra_clk_pll *pll = to_clk_pll(hw); 1017 u32 val = pll_readl_base(pll); 1018 u32 divn = 0, divm = 0, divp = 0; 1019 u64 rate = parent_rate; 1020 1021 divp = (val >> pll->params->div_nmp->divp_shift) & (divp_mask(pll)); 1022 divn = (val >> pll->params->div_nmp->divn_shift) & (divn_mask(pll)); 1023 divm = (val >> pll->params->div_nmp->divm_shift) & (divm_mask(pll)); 1024 divm *= divp; 1025 1026 rate *= divn; 1027 do_div(rate, divm); 1028 return rate; 1029 } 1030 1031 static void tegra_clk_pll_restore_context(struct clk_hw *hw) 1032 { 1033 struct tegra_clk_pll *pll = to_clk_pll(hw); 1034 struct clk_hw *parent = clk_hw_get_parent(hw); 1035 unsigned long parent_rate = clk_hw_get_rate(parent); 1036 unsigned long rate = clk_hw_get_rate(hw); 1037 1038 if (clk_pll_is_enabled(hw)) 1039 return; 1040 1041 if (pll->params->set_defaults) 1042 pll->params->set_defaults(pll); 1043 1044 clk_pll_set_rate(hw, rate, parent_rate); 1045 1046 if (!__clk_get_enable_count(hw->clk)) 1047 clk_pll_disable(hw); 1048 else 1049 clk_pll_enable(hw); 1050 } 1051 1052 const struct clk_ops tegra_clk_pll_ops = { 1053 .is_enabled = clk_pll_is_enabled, 1054 .enable = clk_pll_enable, 1055 .disable = clk_pll_disable, 1056 .recalc_rate = clk_pll_recalc_rate, 1057 .round_rate = clk_pll_round_rate, 1058 .set_rate = clk_pll_set_rate, 1059 .restore_context = tegra_clk_pll_restore_context, 1060 }; 1061 1062 const struct clk_ops tegra_clk_plle_ops = { 1063 .recalc_rate = clk_plle_recalc_rate, 1064 .is_enabled = clk_pll_is_enabled, 1065 .disable = clk_pll_disable, 1066 .enable = clk_plle_enable, 1067 }; 1068 1069 /* 1070 * Structure defining the fields for USB UTMI clocks Parameters. 1071 */ 1072 struct utmi_clk_param { 1073 /* Oscillator Frequency in Hz */ 1074 u32 osc_frequency; 1075 /* UTMIP PLL Enable Delay Count */ 1076 u8 enable_delay_count; 1077 /* UTMIP PLL Stable count */ 1078 u8 stable_count; 1079 /* UTMIP PLL Active delay count */ 1080 u8 active_delay_count; 1081 /* UTMIP PLL Xtal frequency count */ 1082 u8 xtal_freq_count; 1083 }; 1084 1085 static const struct utmi_clk_param utmi_parameters[] = { 1086 { 1087 .osc_frequency = 13000000, .enable_delay_count = 0x02, 1088 .stable_count = 0x33, .active_delay_count = 0x05, 1089 .xtal_freq_count = 0x7f 1090 }, { 1091 .osc_frequency = 19200000, .enable_delay_count = 0x03, 1092 .stable_count = 0x4b, .active_delay_count = 0x06, 1093 .xtal_freq_count = 0xbb 1094 }, { 1095 .osc_frequency = 12000000, .enable_delay_count = 0x02, 1096 .stable_count = 0x2f, .active_delay_count = 0x04, 1097 .xtal_freq_count = 0x76 1098 }, { 1099 .osc_frequency = 26000000, .enable_delay_count = 0x04, 1100 .stable_count = 0x66, .active_delay_count = 0x09, 1101 .xtal_freq_count = 0xfe 1102 }, { 1103 .osc_frequency = 16800000, .enable_delay_count = 0x03, 1104 .stable_count = 0x41, .active_delay_count = 0x0a, 1105 .xtal_freq_count = 0xa4 1106 }, { 1107 .osc_frequency = 38400000, .enable_delay_count = 0x0, 1108 .stable_count = 0x0, .active_delay_count = 0x6, 1109 .xtal_freq_count = 0x80 1110 }, 1111 }; 1112 1113 static int clk_pllu_enable(struct clk_hw *hw) 1114 { 1115 struct tegra_clk_pll *pll = to_clk_pll(hw); 1116 struct clk_hw *pll_ref = clk_hw_get_parent(hw); 1117 struct clk_hw *osc = clk_hw_get_parent(pll_ref); 1118 const struct utmi_clk_param *params = NULL; 1119 unsigned long flags = 0, input_rate; 1120 unsigned int i; 1121 int ret = 0; 1122 u32 value; 1123 1124 if (!osc) { 1125 pr_err("%s: failed to get OSC clock\n", __func__); 1126 return -EINVAL; 1127 } 1128 1129 input_rate = clk_hw_get_rate(osc); 1130 1131 if (pll->lock) 1132 spin_lock_irqsave(pll->lock, flags); 1133 1134 _clk_pll_enable(hw); 1135 1136 ret = clk_pll_wait_for_lock(pll); 1137 if (ret < 0) 1138 goto out; 1139 1140 for (i = 0; i < ARRAY_SIZE(utmi_parameters); i++) { 1141 if (input_rate == utmi_parameters[i].osc_frequency) { 1142 params = &utmi_parameters[i]; 1143 break; 1144 } 1145 } 1146 1147 if (!params) { 1148 pr_err("%s: unexpected input rate %lu Hz\n", __func__, 1149 input_rate); 1150 ret = -EINVAL; 1151 goto out; 1152 } 1153 1154 value = pll_readl_base(pll); 1155 value &= ~PLLU_BASE_OVERRIDE; 1156 pll_writel_base(value, pll); 1157 1158 value = readl_relaxed(pll->clk_base + UTMIP_PLL_CFG2); 1159 /* Program UTMIP PLL stable and active counts */ 1160 value &= ~UTMIP_PLL_CFG2_STABLE_COUNT(~0); 1161 value |= UTMIP_PLL_CFG2_STABLE_COUNT(params->stable_count); 1162 value &= ~UTMIP_PLL_CFG2_ACTIVE_DLY_COUNT(~0); 1163 value |= UTMIP_PLL_CFG2_ACTIVE_DLY_COUNT(params->active_delay_count); 1164 /* Remove power downs from UTMIP PLL control bits */ 1165 value &= ~UTMIP_PLL_CFG2_FORCE_PD_SAMP_A_POWERDOWN; 1166 value &= ~UTMIP_PLL_CFG2_FORCE_PD_SAMP_B_POWERDOWN; 1167 value &= ~UTMIP_PLL_CFG2_FORCE_PD_SAMP_C_POWERDOWN; 1168 writel_relaxed(value, pll->clk_base + UTMIP_PLL_CFG2); 1169 1170 value = readl_relaxed(pll->clk_base + UTMIP_PLL_CFG1); 1171 /* Program UTMIP PLL delay and oscillator frequency counts */ 1172 value &= ~UTMIP_PLL_CFG1_ENABLE_DLY_COUNT(~0); 1173 value |= UTMIP_PLL_CFG1_ENABLE_DLY_COUNT(params->enable_delay_count); 1174 value &= ~UTMIP_PLL_CFG1_XTAL_FREQ_COUNT(~0); 1175 value |= UTMIP_PLL_CFG1_XTAL_FREQ_COUNT(params->xtal_freq_count); 1176 /* Remove power downs from UTMIP PLL control bits */ 1177 value &= ~UTMIP_PLL_CFG1_FORCE_PLL_ENABLE_POWERDOWN; 1178 value &= ~UTMIP_PLL_CFG1_FORCE_PLL_ACTIVE_POWERDOWN; 1179 value &= ~UTMIP_PLL_CFG1_FORCE_PLLU_POWERDOWN; 1180 writel_relaxed(value, pll->clk_base + UTMIP_PLL_CFG1); 1181 1182 out: 1183 if (pll->lock) 1184 spin_unlock_irqrestore(pll->lock, flags); 1185 1186 return ret; 1187 } 1188 1189 static const struct clk_ops tegra_clk_pllu_ops = { 1190 .is_enabled = clk_pll_is_enabled, 1191 .enable = clk_pllu_enable, 1192 .disable = clk_pll_disable, 1193 .recalc_rate = clk_pll_recalc_rate, 1194 .round_rate = clk_pll_round_rate, 1195 .set_rate = clk_pll_set_rate, 1196 }; 1197 1198 static int _pll_fixed_mdiv(struct tegra_clk_pll_params *pll_params, 1199 unsigned long parent_rate) 1200 { 1201 u16 mdiv = parent_rate / pll_params->cf_min; 1202 1203 if (pll_params->flags & TEGRA_MDIV_NEW) 1204 return (!pll_params->mdiv_default ? mdiv : 1205 min(mdiv, pll_params->mdiv_default)); 1206 1207 if (pll_params->mdiv_default) 1208 return pll_params->mdiv_default; 1209 1210 if (parent_rate > pll_params->cf_max) 1211 return 2; 1212 else 1213 return 1; 1214 } 1215 1216 static int _calc_dynamic_ramp_rate(struct clk_hw *hw, 1217 struct tegra_clk_pll_freq_table *cfg, 1218 unsigned long rate, unsigned long parent_rate) 1219 { 1220 struct tegra_clk_pll *pll = to_clk_pll(hw); 1221 unsigned int p; 1222 int p_div; 1223 1224 if (!rate) 1225 return -EINVAL; 1226 1227 p = DIV_ROUND_UP(pll->params->vco_min, rate); 1228 cfg->m = _pll_fixed_mdiv(pll->params, parent_rate); 1229 cfg->output_rate = rate * p; 1230 cfg->n = cfg->output_rate * cfg->m / parent_rate; 1231 cfg->input_rate = parent_rate; 1232 1233 p_div = _p_div_to_hw(hw, p); 1234 if (p_div < 0) 1235 return p_div; 1236 1237 cfg->p = p_div; 1238 1239 if (cfg->n > divn_max(pll) || cfg->output_rate > pll->params->vco_max) 1240 return -EINVAL; 1241 1242 return 0; 1243 } 1244 1245 #if defined(CONFIG_ARCH_TEGRA_114_SOC) || \ 1246 defined(CONFIG_ARCH_TEGRA_124_SOC) || \ 1247 defined(CONFIG_ARCH_TEGRA_132_SOC) || \ 1248 defined(CONFIG_ARCH_TEGRA_210_SOC) 1249 1250 u16 tegra_pll_get_fixed_mdiv(struct clk_hw *hw, unsigned long input_rate) 1251 { 1252 struct tegra_clk_pll *pll = to_clk_pll(hw); 1253 1254 return (u16)_pll_fixed_mdiv(pll->params, input_rate); 1255 } 1256 1257 static unsigned long _clip_vco_min(unsigned long vco_min, 1258 unsigned long parent_rate) 1259 { 1260 return DIV_ROUND_UP(vco_min, parent_rate) * parent_rate; 1261 } 1262 1263 static int _setup_dynamic_ramp(struct tegra_clk_pll_params *pll_params, 1264 void __iomem *clk_base, 1265 unsigned long parent_rate) 1266 { 1267 u32 val; 1268 u32 step_a, step_b; 1269 1270 switch (parent_rate) { 1271 case 12000000: 1272 case 13000000: 1273 case 26000000: 1274 step_a = 0x2B; 1275 step_b = 0x0B; 1276 break; 1277 case 16800000: 1278 step_a = 0x1A; 1279 step_b = 0x09; 1280 break; 1281 case 19200000: 1282 step_a = 0x12; 1283 step_b = 0x08; 1284 break; 1285 default: 1286 pr_err("%s: Unexpected reference rate %lu\n", 1287 __func__, parent_rate); 1288 WARN_ON(1); 1289 return -EINVAL; 1290 } 1291 1292 val = step_a << pll_params->stepa_shift; 1293 val |= step_b << pll_params->stepb_shift; 1294 writel_relaxed(val, clk_base + pll_params->dyn_ramp_reg); 1295 1296 return 0; 1297 } 1298 1299 static int _pll_ramp_calc_pll(struct clk_hw *hw, 1300 struct tegra_clk_pll_freq_table *cfg, 1301 unsigned long rate, unsigned long parent_rate) 1302 { 1303 struct tegra_clk_pll *pll = to_clk_pll(hw); 1304 int err = 0; 1305 1306 err = _get_table_rate(hw, cfg, rate, parent_rate); 1307 if (err < 0) 1308 err = _calc_dynamic_ramp_rate(hw, cfg, rate, parent_rate); 1309 else { 1310 if (cfg->m != _pll_fixed_mdiv(pll->params, parent_rate)) { 1311 WARN_ON(1); 1312 err = -EINVAL; 1313 goto out; 1314 } 1315 } 1316 1317 if (cfg->p > pll->params->max_p) 1318 err = -EINVAL; 1319 1320 out: 1321 return err; 1322 } 1323 1324 static int clk_pllxc_set_rate(struct clk_hw *hw, unsigned long rate, 1325 unsigned long parent_rate) 1326 { 1327 struct tegra_clk_pll *pll = to_clk_pll(hw); 1328 struct tegra_clk_pll_freq_table cfg, old_cfg; 1329 unsigned long flags = 0; 1330 int ret; 1331 1332 ret = _pll_ramp_calc_pll(hw, &cfg, rate, parent_rate); 1333 if (ret < 0) 1334 return ret; 1335 1336 if (pll->lock) 1337 spin_lock_irqsave(pll->lock, flags); 1338 1339 _get_pll_mnp(pll, &old_cfg); 1340 if (pll->params->flags & TEGRA_PLL_VCO_OUT) 1341 cfg.p = old_cfg.p; 1342 1343 if (old_cfg.m != cfg.m || old_cfg.n != cfg.n || old_cfg.p != cfg.p) 1344 ret = _program_pll(hw, &cfg, rate); 1345 1346 if (pll->lock) 1347 spin_unlock_irqrestore(pll->lock, flags); 1348 1349 return ret; 1350 } 1351 1352 static long clk_pll_ramp_round_rate(struct clk_hw *hw, unsigned long rate, 1353 unsigned long *prate) 1354 { 1355 struct tegra_clk_pll *pll = to_clk_pll(hw); 1356 struct tegra_clk_pll_freq_table cfg; 1357 int ret, p_div; 1358 u64 output_rate = *prate; 1359 1360 ret = _pll_ramp_calc_pll(hw, &cfg, rate, *prate); 1361 if (ret < 0) 1362 return ret; 1363 1364 p_div = _hw_to_p_div(hw, cfg.p); 1365 if (p_div < 0) 1366 return p_div; 1367 1368 if (pll->params->set_gain) 1369 pll->params->set_gain(&cfg); 1370 1371 output_rate *= cfg.n; 1372 do_div(output_rate, cfg.m * p_div); 1373 1374 return output_rate; 1375 } 1376 1377 static void _pllcx_strobe(struct tegra_clk_pll *pll) 1378 { 1379 u32 val; 1380 1381 val = pll_readl_misc(pll); 1382 val |= PLLCX_MISC_STROBE; 1383 pll_writel_misc(val, pll); 1384 udelay(2); 1385 1386 val &= ~PLLCX_MISC_STROBE; 1387 pll_writel_misc(val, pll); 1388 } 1389 1390 static int clk_pllc_enable(struct clk_hw *hw) 1391 { 1392 struct tegra_clk_pll *pll = to_clk_pll(hw); 1393 u32 val; 1394 int ret; 1395 unsigned long flags = 0; 1396 1397 if (clk_pll_is_enabled(hw)) 1398 return 0; 1399 1400 if (pll->lock) 1401 spin_lock_irqsave(pll->lock, flags); 1402 1403 _clk_pll_enable(hw); 1404 udelay(2); 1405 1406 val = pll_readl_misc(pll); 1407 val &= ~PLLCX_MISC_RESET; 1408 pll_writel_misc(val, pll); 1409 udelay(2); 1410 1411 _pllcx_strobe(pll); 1412 1413 ret = clk_pll_wait_for_lock(pll); 1414 1415 if (pll->lock) 1416 spin_unlock_irqrestore(pll->lock, flags); 1417 1418 return ret; 1419 } 1420 1421 static void _clk_pllc_disable(struct clk_hw *hw) 1422 { 1423 struct tegra_clk_pll *pll = to_clk_pll(hw); 1424 u32 val; 1425 1426 _clk_pll_disable(hw); 1427 1428 val = pll_readl_misc(pll); 1429 val |= PLLCX_MISC_RESET; 1430 pll_writel_misc(val, pll); 1431 udelay(2); 1432 } 1433 1434 static void clk_pllc_disable(struct clk_hw *hw) 1435 { 1436 struct tegra_clk_pll *pll = to_clk_pll(hw); 1437 unsigned long flags = 0; 1438 1439 if (pll->lock) 1440 spin_lock_irqsave(pll->lock, flags); 1441 1442 _clk_pllc_disable(hw); 1443 1444 if (pll->lock) 1445 spin_unlock_irqrestore(pll->lock, flags); 1446 } 1447 1448 static int _pllcx_update_dynamic_coef(struct tegra_clk_pll *pll, 1449 unsigned long input_rate, u32 n) 1450 { 1451 u32 val, n_threshold; 1452 1453 switch (input_rate) { 1454 case 12000000: 1455 n_threshold = 70; 1456 break; 1457 case 13000000: 1458 case 26000000: 1459 n_threshold = 71; 1460 break; 1461 case 16800000: 1462 n_threshold = 55; 1463 break; 1464 case 19200000: 1465 n_threshold = 48; 1466 break; 1467 default: 1468 pr_err("%s: Unexpected reference rate %lu\n", 1469 __func__, input_rate); 1470 return -EINVAL; 1471 } 1472 1473 val = pll_readl_misc(pll); 1474 val &= ~(PLLCX_MISC_SDM_DIV_MASK | PLLCX_MISC_FILT_DIV_MASK); 1475 val |= n <= n_threshold ? 1476 PLLCX_MISC_DIV_LOW_RANGE : PLLCX_MISC_DIV_HIGH_RANGE; 1477 pll_writel_misc(val, pll); 1478 1479 return 0; 1480 } 1481 1482 static int clk_pllc_set_rate(struct clk_hw *hw, unsigned long rate, 1483 unsigned long parent_rate) 1484 { 1485 struct tegra_clk_pll_freq_table cfg, old_cfg; 1486 struct tegra_clk_pll *pll = to_clk_pll(hw); 1487 unsigned long flags = 0; 1488 int state, ret = 0; 1489 1490 if (pll->lock) 1491 spin_lock_irqsave(pll->lock, flags); 1492 1493 ret = _pll_ramp_calc_pll(hw, &cfg, rate, parent_rate); 1494 if (ret < 0) 1495 goto out; 1496 1497 _get_pll_mnp(pll, &old_cfg); 1498 1499 if (cfg.m != old_cfg.m) { 1500 WARN_ON(1); 1501 goto out; 1502 } 1503 1504 if (old_cfg.n == cfg.n && old_cfg.p == cfg.p) 1505 goto out; 1506 1507 state = clk_pll_is_enabled(hw); 1508 if (state) 1509 _clk_pllc_disable(hw); 1510 1511 ret = _pllcx_update_dynamic_coef(pll, parent_rate, cfg.n); 1512 if (ret < 0) 1513 goto out; 1514 1515 _update_pll_mnp(pll, &cfg); 1516 1517 if (state) 1518 ret = clk_pllc_enable(hw); 1519 1520 out: 1521 if (pll->lock) 1522 spin_unlock_irqrestore(pll->lock, flags); 1523 1524 return ret; 1525 } 1526 1527 static long _pllre_calc_rate(struct tegra_clk_pll *pll, 1528 struct tegra_clk_pll_freq_table *cfg, 1529 unsigned long rate, unsigned long parent_rate) 1530 { 1531 u16 m, n; 1532 u64 output_rate = parent_rate; 1533 1534 m = _pll_fixed_mdiv(pll->params, parent_rate); 1535 n = rate * m / parent_rate; 1536 1537 output_rate *= n; 1538 do_div(output_rate, m); 1539 1540 if (cfg) { 1541 cfg->m = m; 1542 cfg->n = n; 1543 } 1544 1545 return output_rate; 1546 } 1547 1548 static int clk_pllre_set_rate(struct clk_hw *hw, unsigned long rate, 1549 unsigned long parent_rate) 1550 { 1551 struct tegra_clk_pll_freq_table cfg, old_cfg; 1552 struct tegra_clk_pll *pll = to_clk_pll(hw); 1553 unsigned long flags = 0; 1554 int state, ret = 0; 1555 1556 if (pll->lock) 1557 spin_lock_irqsave(pll->lock, flags); 1558 1559 _pllre_calc_rate(pll, &cfg, rate, parent_rate); 1560 _get_pll_mnp(pll, &old_cfg); 1561 cfg.p = old_cfg.p; 1562 1563 if (cfg.m != old_cfg.m || cfg.n != old_cfg.n) { 1564 state = clk_pll_is_enabled(hw); 1565 if (state) 1566 _clk_pll_disable(hw); 1567 1568 _update_pll_mnp(pll, &cfg); 1569 1570 if (state) { 1571 _clk_pll_enable(hw); 1572 ret = clk_pll_wait_for_lock(pll); 1573 } 1574 } 1575 1576 if (pll->lock) 1577 spin_unlock_irqrestore(pll->lock, flags); 1578 1579 return ret; 1580 } 1581 1582 static unsigned long clk_pllre_recalc_rate(struct clk_hw *hw, 1583 unsigned long parent_rate) 1584 { 1585 struct tegra_clk_pll_freq_table cfg; 1586 struct tegra_clk_pll *pll = to_clk_pll(hw); 1587 u64 rate = parent_rate; 1588 1589 _get_pll_mnp(pll, &cfg); 1590 1591 rate *= cfg.n; 1592 do_div(rate, cfg.m); 1593 1594 return rate; 1595 } 1596 1597 static long clk_pllre_round_rate(struct clk_hw *hw, unsigned long rate, 1598 unsigned long *prate) 1599 { 1600 struct tegra_clk_pll *pll = to_clk_pll(hw); 1601 1602 return _pllre_calc_rate(pll, NULL, rate, *prate); 1603 } 1604 1605 static int clk_plle_tegra114_enable(struct clk_hw *hw) 1606 { 1607 struct tegra_clk_pll *pll = to_clk_pll(hw); 1608 struct tegra_clk_pll_freq_table sel; 1609 u32 val; 1610 int ret; 1611 unsigned long flags = 0; 1612 unsigned long input_rate; 1613 1614 input_rate = clk_hw_get_rate(clk_hw_get_parent(hw)); 1615 1616 if (_get_table_rate(hw, &sel, pll->params->fixed_rate, input_rate)) 1617 return -EINVAL; 1618 1619 if (pll->lock) 1620 spin_lock_irqsave(pll->lock, flags); 1621 1622 val = pll_readl_base(pll); 1623 val &= ~BIT(29); /* Disable lock override */ 1624 pll_writel_base(val, pll); 1625 1626 val = pll_readl(pll->params->aux_reg, pll); 1627 val |= PLLE_AUX_ENABLE_SWCTL; 1628 val &= ~PLLE_AUX_SEQ_ENABLE; 1629 pll_writel(val, pll->params->aux_reg, pll); 1630 udelay(1); 1631 1632 val = pll_readl_misc(pll); 1633 val |= PLLE_MISC_LOCK_ENABLE; 1634 val |= PLLE_MISC_IDDQ_SW_CTRL; 1635 val &= ~PLLE_MISC_IDDQ_SW_VALUE; 1636 val |= PLLE_MISC_PLLE_PTS; 1637 val &= ~(PLLE_MISC_VREG_BG_CTRL_MASK | PLLE_MISC_VREG_CTRL_MASK); 1638 pll_writel_misc(val, pll); 1639 udelay(5); 1640 1641 val = pll_readl(PLLE_SS_CTRL, pll); 1642 val |= PLLE_SS_DISABLE; 1643 pll_writel(val, PLLE_SS_CTRL, pll); 1644 1645 val = pll_readl_base(pll); 1646 val &= ~(divp_mask_shifted(pll) | divn_mask_shifted(pll) | 1647 divm_mask_shifted(pll)); 1648 val &= ~(PLLE_BASE_DIVCML_MASK << PLLE_BASE_DIVCML_SHIFT); 1649 val |= sel.m << divm_shift(pll); 1650 val |= sel.n << divn_shift(pll); 1651 val |= sel.cpcon << PLLE_BASE_DIVCML_SHIFT; 1652 pll_writel_base(val, pll); 1653 udelay(1); 1654 1655 _clk_pll_enable(hw); 1656 ret = clk_pll_wait_for_lock(pll); 1657 1658 if (ret < 0) 1659 goto out; 1660 1661 val = pll_readl(PLLE_SS_CTRL, pll); 1662 val &= ~(PLLE_SS_CNTL_CENTER | PLLE_SS_CNTL_INVERT); 1663 val &= ~PLLE_SS_COEFFICIENTS_MASK; 1664 val |= PLLE_SS_COEFFICIENTS_VAL_TEGRA114; 1665 pll_writel(val, PLLE_SS_CTRL, pll); 1666 val &= ~(PLLE_SS_CNTL_SSC_BYP | PLLE_SS_CNTL_BYPASS_SS); 1667 pll_writel(val, PLLE_SS_CTRL, pll); 1668 udelay(1); 1669 val &= ~PLLE_SS_CNTL_INTERP_RESET; 1670 pll_writel(val, PLLE_SS_CTRL, pll); 1671 udelay(1); 1672 1673 /* Enable HW control of XUSB brick PLL */ 1674 val = pll_readl_misc(pll); 1675 val &= ~PLLE_MISC_IDDQ_SW_CTRL; 1676 pll_writel_misc(val, pll); 1677 1678 val = pll_readl(pll->params->aux_reg, pll); 1679 val |= (PLLE_AUX_USE_LOCKDET | PLLE_AUX_SEQ_START_STATE); 1680 val &= ~(PLLE_AUX_ENABLE_SWCTL | PLLE_AUX_SS_SWCTL); 1681 pll_writel(val, pll->params->aux_reg, pll); 1682 udelay(1); 1683 val |= PLLE_AUX_SEQ_ENABLE; 1684 pll_writel(val, pll->params->aux_reg, pll); 1685 1686 val = pll_readl(XUSBIO_PLL_CFG0, pll); 1687 val |= (XUSBIO_PLL_CFG0_PADPLL_USE_LOCKDET | 1688 XUSBIO_PLL_CFG0_SEQ_START_STATE); 1689 val &= ~(XUSBIO_PLL_CFG0_CLK_ENABLE_SWCTL | 1690 XUSBIO_PLL_CFG0_PADPLL_RESET_SWCTL); 1691 pll_writel(val, XUSBIO_PLL_CFG0, pll); 1692 udelay(1); 1693 val |= XUSBIO_PLL_CFG0_SEQ_ENABLE; 1694 pll_writel(val, XUSBIO_PLL_CFG0, pll); 1695 1696 /* Enable HW control of SATA PLL */ 1697 val = pll_readl(SATA_PLL_CFG0, pll); 1698 val &= ~SATA_PLL_CFG0_PADPLL_RESET_SWCTL; 1699 val |= SATA_PLL_CFG0_PADPLL_USE_LOCKDET; 1700 val |= SATA_PLL_CFG0_SEQ_START_STATE; 1701 pll_writel(val, SATA_PLL_CFG0, pll); 1702 1703 udelay(1); 1704 1705 val = pll_readl(SATA_PLL_CFG0, pll); 1706 val |= SATA_PLL_CFG0_SEQ_ENABLE; 1707 pll_writel(val, SATA_PLL_CFG0, pll); 1708 1709 out: 1710 if (pll->lock) 1711 spin_unlock_irqrestore(pll->lock, flags); 1712 1713 return ret; 1714 } 1715 1716 static void clk_plle_tegra114_disable(struct clk_hw *hw) 1717 { 1718 struct tegra_clk_pll *pll = to_clk_pll(hw); 1719 unsigned long flags = 0; 1720 u32 val; 1721 1722 if (pll->lock) 1723 spin_lock_irqsave(pll->lock, flags); 1724 1725 _clk_pll_disable(hw); 1726 1727 val = pll_readl_misc(pll); 1728 val |= PLLE_MISC_IDDQ_SW_CTRL | PLLE_MISC_IDDQ_SW_VALUE; 1729 pll_writel_misc(val, pll); 1730 udelay(1); 1731 1732 if (pll->lock) 1733 spin_unlock_irqrestore(pll->lock, flags); 1734 } 1735 1736 static int clk_pllu_tegra114_enable(struct clk_hw *hw) 1737 { 1738 struct tegra_clk_pll *pll = to_clk_pll(hw); 1739 const struct utmi_clk_param *params = NULL; 1740 struct clk *osc = __clk_lookup("osc"); 1741 unsigned long flags = 0, input_rate; 1742 unsigned int i; 1743 int ret = 0; 1744 u32 value; 1745 1746 if (!osc) { 1747 pr_err("%s: failed to get OSC clock\n", __func__); 1748 return -EINVAL; 1749 } 1750 1751 if (clk_pll_is_enabled(hw)) 1752 return 0; 1753 1754 input_rate = clk_hw_get_rate(__clk_get_hw(osc)); 1755 1756 if (pll->lock) 1757 spin_lock_irqsave(pll->lock, flags); 1758 1759 _clk_pll_enable(hw); 1760 1761 ret = clk_pll_wait_for_lock(pll); 1762 if (ret < 0) 1763 goto out; 1764 1765 for (i = 0; i < ARRAY_SIZE(utmi_parameters); i++) { 1766 if (input_rate == utmi_parameters[i].osc_frequency) { 1767 params = &utmi_parameters[i]; 1768 break; 1769 } 1770 } 1771 1772 if (!params) { 1773 pr_err("%s: unexpected input rate %lu Hz\n", __func__, 1774 input_rate); 1775 ret = -EINVAL; 1776 goto out; 1777 } 1778 1779 value = pll_readl_base(pll); 1780 value &= ~PLLU_BASE_OVERRIDE; 1781 pll_writel_base(value, pll); 1782 1783 value = readl_relaxed(pll->clk_base + UTMIP_PLL_CFG2); 1784 /* Program UTMIP PLL stable and active counts */ 1785 value &= ~UTMIP_PLL_CFG2_STABLE_COUNT(~0); 1786 value |= UTMIP_PLL_CFG2_STABLE_COUNT(params->stable_count); 1787 value &= ~UTMIP_PLL_CFG2_ACTIVE_DLY_COUNT(~0); 1788 value |= UTMIP_PLL_CFG2_ACTIVE_DLY_COUNT(params->active_delay_count); 1789 /* Remove power downs from UTMIP PLL control bits */ 1790 value &= ~UTMIP_PLL_CFG2_FORCE_PD_SAMP_A_POWERDOWN; 1791 value &= ~UTMIP_PLL_CFG2_FORCE_PD_SAMP_B_POWERDOWN; 1792 value &= ~UTMIP_PLL_CFG2_FORCE_PD_SAMP_C_POWERDOWN; 1793 writel_relaxed(value, pll->clk_base + UTMIP_PLL_CFG2); 1794 1795 value = readl_relaxed(pll->clk_base + UTMIP_PLL_CFG1); 1796 /* Program UTMIP PLL delay and oscillator frequency counts */ 1797 value &= ~UTMIP_PLL_CFG1_ENABLE_DLY_COUNT(~0); 1798 value |= UTMIP_PLL_CFG1_ENABLE_DLY_COUNT(params->enable_delay_count); 1799 value &= ~UTMIP_PLL_CFG1_XTAL_FREQ_COUNT(~0); 1800 value |= UTMIP_PLL_CFG1_XTAL_FREQ_COUNT(params->xtal_freq_count); 1801 /* Remove power downs from UTMIP PLL control bits */ 1802 value &= ~UTMIP_PLL_CFG1_FORCE_PLL_ENABLE_POWERDOWN; 1803 value &= ~UTMIP_PLL_CFG1_FORCE_PLL_ACTIVE_POWERDOWN; 1804 value &= ~UTMIP_PLL_CFG1_FORCE_PLLU_POWERUP; 1805 value &= ~UTMIP_PLL_CFG1_FORCE_PLLU_POWERDOWN; 1806 writel_relaxed(value, pll->clk_base + UTMIP_PLL_CFG1); 1807 1808 /* Setup HW control of UTMIPLL */ 1809 value = readl_relaxed(pll->clk_base + UTMIPLL_HW_PWRDN_CFG0); 1810 value |= UTMIPLL_HW_PWRDN_CFG0_USE_LOCKDET; 1811 value &= ~UTMIPLL_HW_PWRDN_CFG0_CLK_ENABLE_SWCTL; 1812 value |= UTMIPLL_HW_PWRDN_CFG0_SEQ_START_STATE; 1813 writel_relaxed(value, pll->clk_base + UTMIPLL_HW_PWRDN_CFG0); 1814 1815 value = readl_relaxed(pll->clk_base + UTMIP_PLL_CFG1); 1816 value &= ~UTMIP_PLL_CFG1_FORCE_PLL_ENABLE_POWERUP; 1817 value &= ~UTMIP_PLL_CFG1_FORCE_PLL_ENABLE_POWERDOWN; 1818 writel_relaxed(value, pll->clk_base + UTMIP_PLL_CFG1); 1819 1820 udelay(1); 1821 1822 /* 1823 * Setup SW override of UTMIPLL assuming USB2.0 ports are assigned 1824 * to USB2 1825 */ 1826 value = readl_relaxed(pll->clk_base + UTMIPLL_HW_PWRDN_CFG0); 1827 value |= UTMIPLL_HW_PWRDN_CFG0_IDDQ_SWCTL; 1828 value &= ~UTMIPLL_HW_PWRDN_CFG0_IDDQ_OVERRIDE; 1829 writel_relaxed(value, pll->clk_base + UTMIPLL_HW_PWRDN_CFG0); 1830 1831 udelay(1); 1832 1833 /* Enable HW control of UTMIPLL */ 1834 value = readl_relaxed(pll->clk_base + UTMIPLL_HW_PWRDN_CFG0); 1835 value |= UTMIPLL_HW_PWRDN_CFG0_SEQ_ENABLE; 1836 writel_relaxed(value, pll->clk_base + UTMIPLL_HW_PWRDN_CFG0); 1837 1838 out: 1839 if (pll->lock) 1840 spin_unlock_irqrestore(pll->lock, flags); 1841 1842 return ret; 1843 } 1844 1845 static void _clk_plle_tegra_init_parent(struct tegra_clk_pll *pll) 1846 { 1847 u32 val, val_aux; 1848 1849 /* ensure parent is set to pll_ref */ 1850 val = pll_readl_base(pll); 1851 val_aux = pll_readl(pll->params->aux_reg, pll); 1852 1853 if (val & PLL_BASE_ENABLE) { 1854 if ((val_aux & PLLE_AUX_PLLRE_SEL) || 1855 (val_aux & PLLE_AUX_PLLP_SEL)) 1856 WARN(1, "pll_e enabled with unsupported parent %s\n", 1857 (val_aux & PLLE_AUX_PLLP_SEL) ? "pllp_out0" : 1858 "pll_re_vco"); 1859 } else { 1860 val_aux &= ~(PLLE_AUX_PLLRE_SEL | PLLE_AUX_PLLP_SEL); 1861 pll_writel(val_aux, pll->params->aux_reg, pll); 1862 fence_udelay(1, pll->clk_base); 1863 } 1864 } 1865 #endif 1866 1867 static struct tegra_clk_pll *_tegra_init_pll(void __iomem *clk_base, 1868 void __iomem *pmc, struct tegra_clk_pll_params *pll_params, 1869 spinlock_t *lock) 1870 { 1871 struct tegra_clk_pll *pll; 1872 1873 pll = kzalloc(sizeof(*pll), GFP_KERNEL); 1874 if (!pll) 1875 return ERR_PTR(-ENOMEM); 1876 1877 pll->clk_base = clk_base; 1878 pll->pmc = pmc; 1879 1880 pll->params = pll_params; 1881 pll->lock = lock; 1882 1883 if (!pll_params->div_nmp) 1884 pll_params->div_nmp = &default_nmp; 1885 1886 return pll; 1887 } 1888 1889 static struct clk *_tegra_clk_register_pll(struct tegra_clk_pll *pll, 1890 const char *name, const char *parent_name, unsigned long flags, 1891 const struct clk_ops *ops) 1892 { 1893 struct clk_init_data init; 1894 1895 init.name = name; 1896 init.ops = ops; 1897 init.flags = flags; 1898 init.parent_names = (parent_name ? &parent_name : NULL); 1899 init.num_parents = (parent_name ? 1 : 0); 1900 1901 /* Default to _calc_rate if unspecified */ 1902 if (!pll->params->calc_rate) { 1903 if (pll->params->flags & TEGRA_PLLM) 1904 pll->params->calc_rate = _calc_dynamic_ramp_rate; 1905 else 1906 pll->params->calc_rate = _calc_rate; 1907 } 1908 1909 if (pll->params->set_defaults) 1910 pll->params->set_defaults(pll); 1911 1912 /* Data in .init is copied by clk_register(), so stack variable OK */ 1913 pll->hw.init = &init; 1914 1915 return clk_register(NULL, &pll->hw); 1916 } 1917 1918 struct clk *tegra_clk_register_pll(const char *name, const char *parent_name, 1919 void __iomem *clk_base, void __iomem *pmc, 1920 unsigned long flags, struct tegra_clk_pll_params *pll_params, 1921 spinlock_t *lock) 1922 { 1923 struct tegra_clk_pll *pll; 1924 struct clk *clk; 1925 1926 pll_params->flags |= TEGRA_PLL_BYPASS; 1927 1928 pll = _tegra_init_pll(clk_base, pmc, pll_params, lock); 1929 if (IS_ERR(pll)) 1930 return ERR_CAST(pll); 1931 1932 clk = _tegra_clk_register_pll(pll, name, parent_name, flags, 1933 &tegra_clk_pll_ops); 1934 if (IS_ERR(clk)) 1935 kfree(pll); 1936 1937 return clk; 1938 } 1939 1940 static struct div_nmp pll_e_nmp = { 1941 .divn_shift = PLLE_BASE_DIVN_SHIFT, 1942 .divn_width = PLLE_BASE_DIVN_WIDTH, 1943 .divm_shift = PLLE_BASE_DIVM_SHIFT, 1944 .divm_width = PLLE_BASE_DIVM_WIDTH, 1945 .divp_shift = PLLE_BASE_DIVP_SHIFT, 1946 .divp_width = PLLE_BASE_DIVP_WIDTH, 1947 }; 1948 1949 struct clk *tegra_clk_register_plle(const char *name, const char *parent_name, 1950 void __iomem *clk_base, void __iomem *pmc, 1951 unsigned long flags, struct tegra_clk_pll_params *pll_params, 1952 spinlock_t *lock) 1953 { 1954 struct tegra_clk_pll *pll; 1955 struct clk *clk; 1956 1957 pll_params->flags |= TEGRA_PLL_BYPASS; 1958 1959 if (!pll_params->div_nmp) 1960 pll_params->div_nmp = &pll_e_nmp; 1961 1962 pll = _tegra_init_pll(clk_base, pmc, pll_params, lock); 1963 if (IS_ERR(pll)) 1964 return ERR_CAST(pll); 1965 1966 clk = _tegra_clk_register_pll(pll, name, parent_name, flags, 1967 &tegra_clk_plle_ops); 1968 if (IS_ERR(clk)) 1969 kfree(pll); 1970 1971 return clk; 1972 } 1973 1974 struct clk *tegra_clk_register_pllu(const char *name, const char *parent_name, 1975 void __iomem *clk_base, unsigned long flags, 1976 struct tegra_clk_pll_params *pll_params, spinlock_t *lock) 1977 { 1978 struct tegra_clk_pll *pll; 1979 struct clk *clk; 1980 1981 pll_params->flags |= TEGRA_PLLU; 1982 1983 pll = _tegra_init_pll(clk_base, NULL, pll_params, lock); 1984 if (IS_ERR(pll)) 1985 return ERR_CAST(pll); 1986 1987 clk = _tegra_clk_register_pll(pll, name, parent_name, flags, 1988 &tegra_clk_pllu_ops); 1989 if (IS_ERR(clk)) 1990 kfree(pll); 1991 1992 return clk; 1993 } 1994 1995 #if defined(CONFIG_ARCH_TEGRA_114_SOC) || \ 1996 defined(CONFIG_ARCH_TEGRA_124_SOC) || \ 1997 defined(CONFIG_ARCH_TEGRA_132_SOC) || \ 1998 defined(CONFIG_ARCH_TEGRA_210_SOC) 1999 static const struct clk_ops tegra_clk_pllxc_ops = { 2000 .is_enabled = clk_pll_is_enabled, 2001 .enable = clk_pll_enable, 2002 .disable = clk_pll_disable, 2003 .recalc_rate = clk_pll_recalc_rate, 2004 .round_rate = clk_pll_ramp_round_rate, 2005 .set_rate = clk_pllxc_set_rate, 2006 }; 2007 2008 static const struct clk_ops tegra_clk_pllc_ops = { 2009 .is_enabled = clk_pll_is_enabled, 2010 .enable = clk_pllc_enable, 2011 .disable = clk_pllc_disable, 2012 .recalc_rate = clk_pll_recalc_rate, 2013 .round_rate = clk_pll_ramp_round_rate, 2014 .set_rate = clk_pllc_set_rate, 2015 }; 2016 2017 static const struct clk_ops tegra_clk_pllre_ops = { 2018 .is_enabled = clk_pll_is_enabled, 2019 .enable = clk_pll_enable, 2020 .disable = clk_pll_disable, 2021 .recalc_rate = clk_pllre_recalc_rate, 2022 .round_rate = clk_pllre_round_rate, 2023 .set_rate = clk_pllre_set_rate, 2024 }; 2025 2026 static const struct clk_ops tegra_clk_plle_tegra114_ops = { 2027 .is_enabled = clk_pll_is_enabled, 2028 .enable = clk_plle_tegra114_enable, 2029 .disable = clk_plle_tegra114_disable, 2030 .recalc_rate = clk_pll_recalc_rate, 2031 }; 2032 2033 static const struct clk_ops tegra_clk_pllu_tegra114_ops = { 2034 .is_enabled = clk_pll_is_enabled, 2035 .enable = clk_pllu_tegra114_enable, 2036 .disable = clk_pll_disable, 2037 .recalc_rate = clk_pll_recalc_rate, 2038 }; 2039 2040 struct clk *tegra_clk_register_pllxc(const char *name, const char *parent_name, 2041 void __iomem *clk_base, void __iomem *pmc, 2042 unsigned long flags, 2043 struct tegra_clk_pll_params *pll_params, 2044 spinlock_t *lock) 2045 { 2046 struct tegra_clk_pll *pll; 2047 struct clk *clk, *parent; 2048 unsigned long parent_rate; 2049 u32 val, val_iddq; 2050 2051 parent = __clk_lookup(parent_name); 2052 if (!parent) { 2053 WARN(1, "parent clk %s of %s must be registered first\n", 2054 parent_name, name); 2055 return ERR_PTR(-EINVAL); 2056 } 2057 2058 if (!pll_params->pdiv_tohw) 2059 return ERR_PTR(-EINVAL); 2060 2061 parent_rate = clk_get_rate(parent); 2062 2063 pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate); 2064 2065 if (pll_params->adjust_vco) 2066 pll_params->vco_min = pll_params->adjust_vco(pll_params, 2067 parent_rate); 2068 2069 /* 2070 * If the pll has a set_defaults callback, it will take care of 2071 * configuring dynamic ramping and setting IDDQ in that path. 2072 */ 2073 if (!pll_params->set_defaults) { 2074 int err; 2075 2076 err = _setup_dynamic_ramp(pll_params, clk_base, parent_rate); 2077 if (err) 2078 return ERR_PTR(err); 2079 2080 val = readl_relaxed(clk_base + pll_params->base_reg); 2081 val_iddq = readl_relaxed(clk_base + pll_params->iddq_reg); 2082 2083 if (val & PLL_BASE_ENABLE) 2084 WARN_ON(val_iddq & BIT(pll_params->iddq_bit_idx)); 2085 else { 2086 val_iddq |= BIT(pll_params->iddq_bit_idx); 2087 writel_relaxed(val_iddq, 2088 clk_base + pll_params->iddq_reg); 2089 } 2090 } 2091 2092 pll = _tegra_init_pll(clk_base, pmc, pll_params, lock); 2093 if (IS_ERR(pll)) 2094 return ERR_CAST(pll); 2095 2096 clk = _tegra_clk_register_pll(pll, name, parent_name, flags, 2097 &tegra_clk_pllxc_ops); 2098 if (IS_ERR(clk)) 2099 kfree(pll); 2100 2101 return clk; 2102 } 2103 2104 struct clk *tegra_clk_register_pllre(const char *name, const char *parent_name, 2105 void __iomem *clk_base, void __iomem *pmc, 2106 unsigned long flags, 2107 struct tegra_clk_pll_params *pll_params, 2108 spinlock_t *lock, unsigned long parent_rate) 2109 { 2110 u32 val; 2111 struct tegra_clk_pll *pll; 2112 struct clk *clk; 2113 2114 pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate); 2115 2116 if (pll_params->adjust_vco) 2117 pll_params->vco_min = pll_params->adjust_vco(pll_params, 2118 parent_rate); 2119 2120 pll = _tegra_init_pll(clk_base, pmc, pll_params, lock); 2121 if (IS_ERR(pll)) 2122 return ERR_CAST(pll); 2123 2124 /* program minimum rate by default */ 2125 2126 val = pll_readl_base(pll); 2127 if (val & PLL_BASE_ENABLE) 2128 WARN_ON(readl_relaxed(clk_base + pll_params->iddq_reg) & 2129 BIT(pll_params->iddq_bit_idx)); 2130 else { 2131 int m; 2132 2133 m = _pll_fixed_mdiv(pll_params, parent_rate); 2134 val = m << divm_shift(pll); 2135 val |= (pll_params->vco_min / parent_rate) << divn_shift(pll); 2136 pll_writel_base(val, pll); 2137 } 2138 2139 /* disable lock override */ 2140 2141 val = pll_readl_misc(pll); 2142 val &= ~BIT(29); 2143 pll_writel_misc(val, pll); 2144 2145 clk = _tegra_clk_register_pll(pll, name, parent_name, flags, 2146 &tegra_clk_pllre_ops); 2147 if (IS_ERR(clk)) 2148 kfree(pll); 2149 2150 return clk; 2151 } 2152 2153 struct clk *tegra_clk_register_pllm(const char *name, const char *parent_name, 2154 void __iomem *clk_base, void __iomem *pmc, 2155 unsigned long flags, 2156 struct tegra_clk_pll_params *pll_params, 2157 spinlock_t *lock) 2158 { 2159 struct tegra_clk_pll *pll; 2160 struct clk *clk, *parent; 2161 unsigned long parent_rate; 2162 2163 if (!pll_params->pdiv_tohw) 2164 return ERR_PTR(-EINVAL); 2165 2166 parent = __clk_lookup(parent_name); 2167 if (!parent) { 2168 WARN(1, "parent clk %s of %s must be registered first\n", 2169 parent_name, name); 2170 return ERR_PTR(-EINVAL); 2171 } 2172 2173 parent_rate = clk_get_rate(parent); 2174 2175 pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate); 2176 2177 if (pll_params->adjust_vco) 2178 pll_params->vco_min = pll_params->adjust_vco(pll_params, 2179 parent_rate); 2180 2181 pll_params->flags |= TEGRA_PLL_BYPASS; 2182 pll_params->flags |= TEGRA_PLLM; 2183 pll = _tegra_init_pll(clk_base, pmc, pll_params, lock); 2184 if (IS_ERR(pll)) 2185 return ERR_CAST(pll); 2186 2187 clk = _tegra_clk_register_pll(pll, name, parent_name, flags, 2188 &tegra_clk_pll_ops); 2189 if (IS_ERR(clk)) 2190 kfree(pll); 2191 2192 return clk; 2193 } 2194 2195 struct clk *tegra_clk_register_pllc(const char *name, const char *parent_name, 2196 void __iomem *clk_base, void __iomem *pmc, 2197 unsigned long flags, 2198 struct tegra_clk_pll_params *pll_params, 2199 spinlock_t *lock) 2200 { 2201 struct clk *parent, *clk; 2202 const struct pdiv_map *p_tohw = pll_params->pdiv_tohw; 2203 struct tegra_clk_pll *pll; 2204 struct tegra_clk_pll_freq_table cfg; 2205 unsigned long parent_rate; 2206 2207 if (!p_tohw) 2208 return ERR_PTR(-EINVAL); 2209 2210 parent = __clk_lookup(parent_name); 2211 if (!parent) { 2212 WARN(1, "parent clk %s of %s must be registered first\n", 2213 parent_name, name); 2214 return ERR_PTR(-EINVAL); 2215 } 2216 2217 parent_rate = clk_get_rate(parent); 2218 2219 pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate); 2220 2221 pll_params->flags |= TEGRA_PLL_BYPASS; 2222 pll = _tegra_init_pll(clk_base, pmc, pll_params, lock); 2223 if (IS_ERR(pll)) 2224 return ERR_CAST(pll); 2225 2226 /* 2227 * Most of PLLC register fields are shadowed, and can not be read 2228 * directly from PLL h/w. Hence, actual PLLC boot state is unknown. 2229 * Initialize PLL to default state: disabled, reset; shadow registers 2230 * loaded with default parameters; dividers are preset for half of 2231 * minimum VCO rate (the latter assured that shadowed divider settings 2232 * are within supported range). 2233 */ 2234 2235 cfg.m = _pll_fixed_mdiv(pll_params, parent_rate); 2236 cfg.n = cfg.m * pll_params->vco_min / parent_rate; 2237 2238 while (p_tohw->pdiv) { 2239 if (p_tohw->pdiv == 2) { 2240 cfg.p = p_tohw->hw_val; 2241 break; 2242 } 2243 p_tohw++; 2244 } 2245 2246 if (!p_tohw->pdiv) { 2247 WARN_ON(1); 2248 return ERR_PTR(-EINVAL); 2249 } 2250 2251 pll_writel_base(0, pll); 2252 _update_pll_mnp(pll, &cfg); 2253 2254 pll_writel_misc(PLLCX_MISC_DEFAULT, pll); 2255 pll_writel(PLLCX_MISC1_DEFAULT, pll_params->ext_misc_reg[0], pll); 2256 pll_writel(PLLCX_MISC2_DEFAULT, pll_params->ext_misc_reg[1], pll); 2257 pll_writel(PLLCX_MISC3_DEFAULT, pll_params->ext_misc_reg[2], pll); 2258 2259 _pllcx_update_dynamic_coef(pll, parent_rate, cfg.n); 2260 2261 clk = _tegra_clk_register_pll(pll, name, parent_name, flags, 2262 &tegra_clk_pllc_ops); 2263 if (IS_ERR(clk)) 2264 kfree(pll); 2265 2266 return clk; 2267 } 2268 2269 struct clk *tegra_clk_register_plle_tegra114(const char *name, 2270 const char *parent_name, 2271 void __iomem *clk_base, unsigned long flags, 2272 struct tegra_clk_pll_params *pll_params, 2273 spinlock_t *lock) 2274 { 2275 struct tegra_clk_pll *pll; 2276 struct clk *clk; 2277 2278 pll = _tegra_init_pll(clk_base, NULL, pll_params, lock); 2279 if (IS_ERR(pll)) 2280 return ERR_CAST(pll); 2281 2282 _clk_plle_tegra_init_parent(pll); 2283 2284 clk = _tegra_clk_register_pll(pll, name, parent_name, flags, 2285 &tegra_clk_plle_tegra114_ops); 2286 if (IS_ERR(clk)) 2287 kfree(pll); 2288 2289 return clk; 2290 } 2291 2292 struct clk * 2293 tegra_clk_register_pllu_tegra114(const char *name, const char *parent_name, 2294 void __iomem *clk_base, unsigned long flags, 2295 struct tegra_clk_pll_params *pll_params, 2296 spinlock_t *lock) 2297 { 2298 struct tegra_clk_pll *pll; 2299 struct clk *clk; 2300 2301 pll_params->flags |= TEGRA_PLLU; 2302 2303 pll = _tegra_init_pll(clk_base, NULL, pll_params, lock); 2304 if (IS_ERR(pll)) 2305 return ERR_CAST(pll); 2306 2307 clk = _tegra_clk_register_pll(pll, name, parent_name, flags, 2308 &tegra_clk_pllu_tegra114_ops); 2309 if (IS_ERR(clk)) 2310 kfree(pll); 2311 2312 return clk; 2313 } 2314 #endif 2315 2316 #if defined(CONFIG_ARCH_TEGRA_124_SOC) || defined(CONFIG_ARCH_TEGRA_132_SOC) || defined(CONFIG_ARCH_TEGRA_210_SOC) 2317 static const struct clk_ops tegra_clk_pllss_ops = { 2318 .is_enabled = clk_pll_is_enabled, 2319 .enable = clk_pll_enable, 2320 .disable = clk_pll_disable, 2321 .recalc_rate = clk_pll_recalc_rate, 2322 .round_rate = clk_pll_ramp_round_rate, 2323 .set_rate = clk_pllxc_set_rate, 2324 .restore_context = tegra_clk_pll_restore_context, 2325 }; 2326 2327 struct clk *tegra_clk_register_pllss(const char *name, const char *parent_name, 2328 void __iomem *clk_base, unsigned long flags, 2329 struct tegra_clk_pll_params *pll_params, 2330 spinlock_t *lock) 2331 { 2332 struct tegra_clk_pll *pll; 2333 struct clk *clk, *parent; 2334 struct tegra_clk_pll_freq_table cfg; 2335 unsigned long parent_rate; 2336 u32 val, val_iddq; 2337 int i; 2338 2339 if (!pll_params->div_nmp) 2340 return ERR_PTR(-EINVAL); 2341 2342 parent = __clk_lookup(parent_name); 2343 if (!parent) { 2344 WARN(1, "parent clk %s of %s must be registered first\n", 2345 parent_name, name); 2346 return ERR_PTR(-EINVAL); 2347 } 2348 2349 pll = _tegra_init_pll(clk_base, NULL, pll_params, lock); 2350 if (IS_ERR(pll)) 2351 return ERR_CAST(pll); 2352 2353 val = pll_readl_base(pll); 2354 val &= ~PLLSS_REF_SRC_SEL_MASK; 2355 pll_writel_base(val, pll); 2356 2357 parent_rate = clk_get_rate(parent); 2358 2359 pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate); 2360 2361 /* initialize PLL to minimum rate */ 2362 2363 cfg.m = _pll_fixed_mdiv(pll_params, parent_rate); 2364 cfg.n = cfg.m * pll_params->vco_min / parent_rate; 2365 2366 for (i = 0; pll_params->pdiv_tohw[i].pdiv; i++) 2367 ; 2368 if (!i) { 2369 kfree(pll); 2370 return ERR_PTR(-EINVAL); 2371 } 2372 2373 cfg.p = pll_params->pdiv_tohw[i-1].hw_val; 2374 2375 _update_pll_mnp(pll, &cfg); 2376 2377 pll_writel_misc(PLLSS_MISC_DEFAULT, pll); 2378 pll_writel(PLLSS_CFG_DEFAULT, pll_params->ext_misc_reg[0], pll); 2379 pll_writel(PLLSS_CTRL1_DEFAULT, pll_params->ext_misc_reg[1], pll); 2380 pll_writel(PLLSS_CTRL1_DEFAULT, pll_params->ext_misc_reg[2], pll); 2381 2382 val = pll_readl_base(pll); 2383 val_iddq = readl_relaxed(clk_base + pll_params->iddq_reg); 2384 if (val & PLL_BASE_ENABLE) { 2385 if (val_iddq & BIT(pll_params->iddq_bit_idx)) { 2386 WARN(1, "%s is on but IDDQ set\n", name); 2387 kfree(pll); 2388 return ERR_PTR(-EINVAL); 2389 } 2390 } else { 2391 val_iddq |= BIT(pll_params->iddq_bit_idx); 2392 writel_relaxed(val_iddq, clk_base + pll_params->iddq_reg); 2393 } 2394 2395 val &= ~PLLSS_LOCK_OVERRIDE; 2396 pll_writel_base(val, pll); 2397 2398 clk = _tegra_clk_register_pll(pll, name, parent_name, flags, 2399 &tegra_clk_pllss_ops); 2400 2401 if (IS_ERR(clk)) 2402 kfree(pll); 2403 2404 return clk; 2405 } 2406 #endif 2407 2408 #if defined(CONFIG_ARCH_TEGRA_210_SOC) 2409 struct clk *tegra_clk_register_pllre_tegra210(const char *name, 2410 const char *parent_name, void __iomem *clk_base, 2411 void __iomem *pmc, unsigned long flags, 2412 struct tegra_clk_pll_params *pll_params, 2413 spinlock_t *lock, unsigned long parent_rate) 2414 { 2415 struct tegra_clk_pll *pll; 2416 struct clk *clk; 2417 2418 pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate); 2419 2420 if (pll_params->adjust_vco) 2421 pll_params->vco_min = pll_params->adjust_vco(pll_params, 2422 parent_rate); 2423 2424 pll = _tegra_init_pll(clk_base, pmc, pll_params, lock); 2425 if (IS_ERR(pll)) 2426 return ERR_CAST(pll); 2427 2428 clk = _tegra_clk_register_pll(pll, name, parent_name, flags, 2429 &tegra_clk_pll_ops); 2430 if (IS_ERR(clk)) 2431 kfree(pll); 2432 2433 return clk; 2434 } 2435 2436 static int clk_plle_tegra210_is_enabled(struct clk_hw *hw) 2437 { 2438 struct tegra_clk_pll *pll = to_clk_pll(hw); 2439 u32 val; 2440 2441 val = pll_readl_base(pll); 2442 2443 return val & PLLE_BASE_ENABLE ? 1 : 0; 2444 } 2445 2446 static int clk_plle_tegra210_enable(struct clk_hw *hw) 2447 { 2448 struct tegra_clk_pll *pll = to_clk_pll(hw); 2449 struct tegra_clk_pll_freq_table sel; 2450 u32 val; 2451 int ret = 0; 2452 unsigned long flags = 0; 2453 unsigned long input_rate; 2454 2455 if (clk_plle_tegra210_is_enabled(hw)) 2456 return 0; 2457 2458 input_rate = clk_hw_get_rate(clk_hw_get_parent(hw)); 2459 2460 if (_get_table_rate(hw, &sel, pll->params->fixed_rate, input_rate)) 2461 return -EINVAL; 2462 2463 if (pll->lock) 2464 spin_lock_irqsave(pll->lock, flags); 2465 2466 val = pll_readl(pll->params->aux_reg, pll); 2467 if (val & PLLE_AUX_SEQ_ENABLE) 2468 goto out; 2469 2470 val = pll_readl_base(pll); 2471 val &= ~BIT(30); /* Disable lock override */ 2472 pll_writel_base(val, pll); 2473 2474 val = pll_readl_misc(pll); 2475 val |= PLLE_MISC_LOCK_ENABLE; 2476 val |= PLLE_MISC_IDDQ_SW_CTRL; 2477 val &= ~PLLE_MISC_IDDQ_SW_VALUE; 2478 val |= PLLE_MISC_PLLE_PTS; 2479 val &= ~(PLLE_MISC_VREG_BG_CTRL_MASK | PLLE_MISC_VREG_CTRL_MASK); 2480 pll_writel_misc(val, pll); 2481 udelay(5); 2482 2483 val = pll_readl(PLLE_SS_CTRL, pll); 2484 val |= PLLE_SS_DISABLE; 2485 pll_writel(val, PLLE_SS_CTRL, pll); 2486 2487 val = pll_readl_base(pll); 2488 val &= ~(divp_mask_shifted(pll) | divn_mask_shifted(pll) | 2489 divm_mask_shifted(pll)); 2490 val &= ~(PLLE_BASE_DIVCML_MASK << PLLE_BASE_DIVCML_SHIFT); 2491 val |= sel.m << divm_shift(pll); 2492 val |= sel.n << divn_shift(pll); 2493 val |= sel.cpcon << PLLE_BASE_DIVCML_SHIFT; 2494 pll_writel_base(val, pll); 2495 udelay(1); 2496 2497 val = pll_readl_base(pll); 2498 val |= PLLE_BASE_ENABLE; 2499 pll_writel_base(val, pll); 2500 2501 ret = clk_pll_wait_for_lock(pll); 2502 2503 if (ret < 0) 2504 goto out; 2505 2506 val = pll_readl(PLLE_SS_CTRL, pll); 2507 val &= ~(PLLE_SS_CNTL_CENTER | PLLE_SS_CNTL_INVERT); 2508 val &= ~PLLE_SS_COEFFICIENTS_MASK; 2509 val |= PLLE_SS_COEFFICIENTS_VAL_TEGRA210; 2510 pll_writel(val, PLLE_SS_CTRL, pll); 2511 val &= ~(PLLE_SS_CNTL_SSC_BYP | PLLE_SS_CNTL_BYPASS_SS); 2512 pll_writel(val, PLLE_SS_CTRL, pll); 2513 udelay(1); 2514 val &= ~PLLE_SS_CNTL_INTERP_RESET; 2515 pll_writel(val, PLLE_SS_CTRL, pll); 2516 udelay(1); 2517 2518 out: 2519 if (pll->lock) 2520 spin_unlock_irqrestore(pll->lock, flags); 2521 2522 return ret; 2523 } 2524 2525 static void clk_plle_tegra210_disable(struct clk_hw *hw) 2526 { 2527 struct tegra_clk_pll *pll = to_clk_pll(hw); 2528 unsigned long flags = 0; 2529 u32 val; 2530 2531 if (pll->lock) 2532 spin_lock_irqsave(pll->lock, flags); 2533 2534 /* If PLLE HW sequencer is enabled, SW should not disable PLLE */ 2535 val = pll_readl(pll->params->aux_reg, pll); 2536 if (val & PLLE_AUX_SEQ_ENABLE) 2537 goto out; 2538 2539 val = pll_readl_base(pll); 2540 val &= ~PLLE_BASE_ENABLE; 2541 pll_writel_base(val, pll); 2542 2543 val = pll_readl(pll->params->aux_reg, pll); 2544 val |= PLLE_AUX_ENABLE_SWCTL | PLLE_AUX_SS_SWCTL; 2545 pll_writel(val, pll->params->aux_reg, pll); 2546 2547 val = pll_readl_misc(pll); 2548 val |= PLLE_MISC_IDDQ_SW_CTRL | PLLE_MISC_IDDQ_SW_VALUE; 2549 pll_writel_misc(val, pll); 2550 udelay(1); 2551 2552 out: 2553 if (pll->lock) 2554 spin_unlock_irqrestore(pll->lock, flags); 2555 } 2556 2557 static void tegra_clk_plle_t210_restore_context(struct clk_hw *hw) 2558 { 2559 struct tegra_clk_pll *pll = to_clk_pll(hw); 2560 2561 _clk_plle_tegra_init_parent(pll); 2562 } 2563 2564 static const struct clk_ops tegra_clk_plle_tegra210_ops = { 2565 .is_enabled = clk_plle_tegra210_is_enabled, 2566 .enable = clk_plle_tegra210_enable, 2567 .disable = clk_plle_tegra210_disable, 2568 .recalc_rate = clk_pll_recalc_rate, 2569 .restore_context = tegra_clk_plle_t210_restore_context, 2570 }; 2571 2572 struct clk *tegra_clk_register_plle_tegra210(const char *name, 2573 const char *parent_name, 2574 void __iomem *clk_base, unsigned long flags, 2575 struct tegra_clk_pll_params *pll_params, 2576 spinlock_t *lock) 2577 { 2578 struct tegra_clk_pll *pll; 2579 struct clk *clk; 2580 2581 pll = _tegra_init_pll(clk_base, NULL, pll_params, lock); 2582 if (IS_ERR(pll)) 2583 return ERR_CAST(pll); 2584 2585 _clk_plle_tegra_init_parent(pll); 2586 2587 clk = _tegra_clk_register_pll(pll, name, parent_name, flags, 2588 &tegra_clk_plle_tegra210_ops); 2589 if (IS_ERR(clk)) 2590 kfree(pll); 2591 2592 return clk; 2593 } 2594 2595 struct clk *tegra_clk_register_pllc_tegra210(const char *name, 2596 const char *parent_name, void __iomem *clk_base, 2597 void __iomem *pmc, unsigned long flags, 2598 struct tegra_clk_pll_params *pll_params, 2599 spinlock_t *lock) 2600 { 2601 struct clk *parent, *clk; 2602 const struct pdiv_map *p_tohw = pll_params->pdiv_tohw; 2603 struct tegra_clk_pll *pll; 2604 unsigned long parent_rate; 2605 2606 if (!p_tohw) 2607 return ERR_PTR(-EINVAL); 2608 2609 parent = __clk_lookup(parent_name); 2610 if (!parent) { 2611 WARN(1, "parent clk %s of %s must be registered first\n", 2612 name, parent_name); 2613 return ERR_PTR(-EINVAL); 2614 } 2615 2616 parent_rate = clk_get_rate(parent); 2617 2618 pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate); 2619 2620 if (pll_params->adjust_vco) 2621 pll_params->vco_min = pll_params->adjust_vco(pll_params, 2622 parent_rate); 2623 2624 pll_params->flags |= TEGRA_PLL_BYPASS; 2625 pll = _tegra_init_pll(clk_base, pmc, pll_params, lock); 2626 if (IS_ERR(pll)) 2627 return ERR_CAST(pll); 2628 2629 clk = _tegra_clk_register_pll(pll, name, parent_name, flags, 2630 &tegra_clk_pll_ops); 2631 if (IS_ERR(clk)) 2632 kfree(pll); 2633 2634 return clk; 2635 } 2636 2637 struct clk *tegra_clk_register_pllss_tegra210(const char *name, 2638 const char *parent_name, void __iomem *clk_base, 2639 unsigned long flags, 2640 struct tegra_clk_pll_params *pll_params, 2641 spinlock_t *lock) 2642 { 2643 struct tegra_clk_pll *pll; 2644 struct clk *clk, *parent; 2645 unsigned long parent_rate; 2646 u32 val; 2647 2648 if (!pll_params->div_nmp) 2649 return ERR_PTR(-EINVAL); 2650 2651 parent = __clk_lookup(parent_name); 2652 if (!parent) { 2653 WARN(1, "parent clk %s of %s must be registered first\n", 2654 name, parent_name); 2655 return ERR_PTR(-EINVAL); 2656 } 2657 2658 val = readl_relaxed(clk_base + pll_params->base_reg); 2659 if (val & PLLSS_REF_SRC_SEL_MASK) { 2660 WARN(1, "not supported reference clock for %s\n", name); 2661 return ERR_PTR(-EINVAL); 2662 } 2663 2664 parent_rate = clk_get_rate(parent); 2665 2666 pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate); 2667 2668 if (pll_params->adjust_vco) 2669 pll_params->vco_min = pll_params->adjust_vco(pll_params, 2670 parent_rate); 2671 2672 pll_params->flags |= TEGRA_PLL_BYPASS; 2673 pll = _tegra_init_pll(clk_base, NULL, pll_params, lock); 2674 if (IS_ERR(pll)) 2675 return ERR_CAST(pll); 2676 2677 clk = _tegra_clk_register_pll(pll, name, parent_name, flags, 2678 &tegra_clk_pll_ops); 2679 2680 if (IS_ERR(clk)) 2681 kfree(pll); 2682 2683 return clk; 2684 } 2685 2686 struct clk *tegra_clk_register_pllmb(const char *name, const char *parent_name, 2687 void __iomem *clk_base, void __iomem *pmc, 2688 unsigned long flags, 2689 struct tegra_clk_pll_params *pll_params, 2690 spinlock_t *lock) 2691 { 2692 struct tegra_clk_pll *pll; 2693 struct clk *clk, *parent; 2694 unsigned long parent_rate; 2695 2696 if (!pll_params->pdiv_tohw) 2697 return ERR_PTR(-EINVAL); 2698 2699 parent = __clk_lookup(parent_name); 2700 if (!parent) { 2701 WARN(1, "parent clk %s of %s must be registered first\n", 2702 parent_name, name); 2703 return ERR_PTR(-EINVAL); 2704 } 2705 2706 parent_rate = clk_get_rate(parent); 2707 2708 pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate); 2709 2710 if (pll_params->adjust_vco) 2711 pll_params->vco_min = pll_params->adjust_vco(pll_params, 2712 parent_rate); 2713 2714 pll_params->flags |= TEGRA_PLL_BYPASS; 2715 pll_params->flags |= TEGRA_PLLMB; 2716 pll = _tegra_init_pll(clk_base, pmc, pll_params, lock); 2717 if (IS_ERR(pll)) 2718 return ERR_CAST(pll); 2719 2720 clk = _tegra_clk_register_pll(pll, name, parent_name, flags, 2721 &tegra_clk_pll_ops); 2722 if (IS_ERR(clk)) 2723 kfree(pll); 2724 2725 return clk; 2726 } 2727 2728 #endif 2729