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