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