Alan Douglas | fda76da | 2021-07-21 21:28:36 +0530 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* |
| 3 | * Cadence Sierra PHY Driver |
| 4 | * |
| 5 | * Based on the linux driver provided by Cadence |
| 6 | * |
| 7 | * Copyright (c) 2018 Cadence Design Systems |
| 8 | * Author: Alan Douglas <adouglas@cadence.com> |
| 9 | * |
| 10 | * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/ |
| 11 | * Jean-Jacques Hiblot <jjhiblot@ti.com> |
| 12 | * |
| 13 | */ |
| 14 | #include <common.h> |
| 15 | #include <clk.h> |
| 16 | #include <generic-phy.h> |
| 17 | #include <reset.h> |
| 18 | #include <dm/device.h> |
| 19 | #include <dm/device-internal.h> |
| 20 | #include <dm/device_compat.h> |
| 21 | #include <dm/lists.h> |
| 22 | #include <dm/read.h> |
| 23 | #include <dm/uclass.h> |
| 24 | #include <dm/devres.h> |
| 25 | #include <linux/io.h> |
| 26 | #include <dt-bindings/phy/phy.h> |
| 27 | #include <regmap.h> |
| 28 | |
| 29 | /* PHY register offsets */ |
| 30 | #define SIERRA_COMMON_CDB_OFFSET 0x0 |
| 31 | #define SIERRA_MACRO_ID_REG 0x0 |
| 32 | #define SIERRA_CMN_PLLLC_MODE_PREG 0x48 |
| 33 | #define SIERRA_CMN_PLLLC_LF_COEFF_MODE1_PREG 0x49 |
| 34 | #define SIERRA_CMN_PLLLC_LF_COEFF_MODE0_PREG 0x4A |
| 35 | #define SIERRA_CMN_PLLLC_LOCK_CNTSTART_PREG 0x4B |
| 36 | #define SIERRA_CMN_PLLLC_BWCAL_MODE1_PREG 0x4F |
| 37 | #define SIERRA_CMN_PLLLC_BWCAL_MODE0_PREG 0x50 |
| 38 | #define SIERRA_CMN_PLLLC_SS_TIME_STEPSIZE_MODE_PREG 0x62 |
| 39 | |
| 40 | #define SIERRA_LANE_CDB_OFFSET(ln, offset) \ |
| 41 | (0x4000 + ((ln) * (0x800 >> (2 - (offset))))) |
| 42 | |
| 43 | #define SIERRA_DET_STANDEC_A_PREG 0x000 |
| 44 | #define SIERRA_DET_STANDEC_B_PREG 0x001 |
| 45 | #define SIERRA_DET_STANDEC_C_PREG 0x002 |
| 46 | #define SIERRA_DET_STANDEC_D_PREG 0x003 |
| 47 | #define SIERRA_DET_STANDEC_E_PREG 0x004 |
| 48 | #define SIERRA_PSM_LANECAL_DLY_A1_RESETS_PREG 0x008 |
| 49 | #define SIERRA_PSM_A0IN_TMR_PREG 0x009 |
| 50 | #define SIERRA_PSM_DIAG_PREG 0x015 |
| 51 | #define SIERRA_PSC_TX_A0_PREG 0x028 |
| 52 | #define SIERRA_PSC_TX_A1_PREG 0x029 |
| 53 | #define SIERRA_PSC_TX_A2_PREG 0x02A |
| 54 | #define SIERRA_PSC_TX_A3_PREG 0x02B |
| 55 | #define SIERRA_PSC_RX_A0_PREG 0x030 |
| 56 | #define SIERRA_PSC_RX_A1_PREG 0x031 |
| 57 | #define SIERRA_PSC_RX_A2_PREG 0x032 |
| 58 | #define SIERRA_PSC_RX_A3_PREG 0x033 |
| 59 | #define SIERRA_PLLCTRL_SUBRATE_PREG 0x03A |
| 60 | #define SIERRA_PLLCTRL_GEN_D_PREG 0x03E |
| 61 | #define SIERRA_PLLCTRL_CPGAIN_MODE_PREG 0x03F |
| 62 | #define SIERRA_PLLCTRL_STATUS_PREG 0x044 |
| 63 | #define SIERRA_CLKPATH_BIASTRIM_PREG 0x04B |
| 64 | #define SIERRA_DFE_BIASTRIM_PREG 0x04C |
| 65 | #define SIERRA_DRVCTRL_ATTEN_PREG 0x06A |
| 66 | #define SIERRA_CLKPATHCTRL_TMR_PREG 0x081 |
| 67 | #define SIERRA_RX_CREQ_FLTR_A_MODE3_PREG 0x085 |
| 68 | #define SIERRA_RX_CREQ_FLTR_A_MODE2_PREG 0x086 |
| 69 | #define SIERRA_RX_CREQ_FLTR_A_MODE1_PREG 0x087 |
| 70 | #define SIERRA_RX_CREQ_FLTR_A_MODE0_PREG 0x088 |
| 71 | #define SIERRA_CREQ_CCLKDET_MODE01_PREG 0x08E |
| 72 | #define SIERRA_RX_CTLE_MAINTENANCE_PREG 0x091 |
| 73 | #define SIERRA_CREQ_FSMCLK_SEL_PREG 0x092 |
| 74 | #define SIERRA_CREQ_EQ_CTRL_PREG 0x093 |
| 75 | #define SIERRA_CREQ_SPARE_PREG 0x096 |
| 76 | #define SIERRA_CREQ_EQ_OPEN_EYE_THRESH_PREG 0x097 |
| 77 | #define SIERRA_CTLELUT_CTRL_PREG 0x098 |
| 78 | #define SIERRA_DFE_ECMP_RATESEL_PREG 0x0C0 |
| 79 | #define SIERRA_DFE_SMP_RATESEL_PREG 0x0C1 |
| 80 | #define SIERRA_DEQ_PHALIGN_CTRL 0x0C4 |
| 81 | #define SIERRA_DEQ_CONCUR_CTRL1_PREG 0x0C8 |
| 82 | #define SIERRA_DEQ_CONCUR_CTRL2_PREG 0x0C9 |
| 83 | #define SIERRA_DEQ_EPIPWR_CTRL2_PREG 0x0CD |
| 84 | #define SIERRA_DEQ_FAST_MAINT_CYCLES_PREG 0x0CE |
| 85 | #define SIERRA_DEQ_ERRCMP_CTRL_PREG 0x0D0 |
| 86 | #define SIERRA_DEQ_OFFSET_CTRL_PREG 0x0D8 |
| 87 | #define SIERRA_DEQ_GAIN_CTRL_PREG 0x0E0 |
| 88 | #define SIERRA_DEQ_VGATUNE_CTRL_PREG 0x0E1 |
| 89 | #define SIERRA_DEQ_GLUT0 0x0E8 |
| 90 | #define SIERRA_DEQ_GLUT1 0x0E9 |
| 91 | #define SIERRA_DEQ_GLUT2 0x0EA |
| 92 | #define SIERRA_DEQ_GLUT3 0x0EB |
| 93 | #define SIERRA_DEQ_GLUT4 0x0EC |
| 94 | #define SIERRA_DEQ_GLUT5 0x0ED |
| 95 | #define SIERRA_DEQ_GLUT6 0x0EE |
| 96 | #define SIERRA_DEQ_GLUT7 0x0EF |
| 97 | #define SIERRA_DEQ_GLUT8 0x0F0 |
| 98 | #define SIERRA_DEQ_GLUT9 0x0F1 |
| 99 | #define SIERRA_DEQ_GLUT10 0x0F2 |
| 100 | #define SIERRA_DEQ_GLUT11 0x0F3 |
| 101 | #define SIERRA_DEQ_GLUT12 0x0F4 |
| 102 | #define SIERRA_DEQ_GLUT13 0x0F5 |
| 103 | #define SIERRA_DEQ_GLUT14 0x0F6 |
| 104 | #define SIERRA_DEQ_GLUT15 0x0F7 |
| 105 | #define SIERRA_DEQ_GLUT16 0x0F8 |
| 106 | #define SIERRA_DEQ_ALUT0 0x108 |
| 107 | #define SIERRA_DEQ_ALUT1 0x109 |
| 108 | #define SIERRA_DEQ_ALUT2 0x10A |
| 109 | #define SIERRA_DEQ_ALUT3 0x10B |
| 110 | #define SIERRA_DEQ_ALUT4 0x10C |
| 111 | #define SIERRA_DEQ_ALUT5 0x10D |
| 112 | #define SIERRA_DEQ_ALUT6 0x10E |
| 113 | #define SIERRA_DEQ_ALUT7 0x10F |
| 114 | #define SIERRA_DEQ_ALUT8 0x110 |
| 115 | #define SIERRA_DEQ_ALUT9 0x111 |
| 116 | #define SIERRA_DEQ_ALUT10 0x112 |
| 117 | #define SIERRA_DEQ_ALUT11 0x113 |
| 118 | #define SIERRA_DEQ_ALUT12 0x114 |
| 119 | #define SIERRA_DEQ_ALUT13 0x115 |
| 120 | #define SIERRA_DEQ_DFETAP_CTRL_PREG 0x128 |
| 121 | #define SIERRA_DFE_EN_1010_IGNORE_PREG 0x134 |
| 122 | #define SIERRA_DEQ_TAU_CTRL1_SLOW_MAINT_PREG 0x150 |
| 123 | #define SIERRA_DEQ_TAU_CTRL2_PREG 0x151 |
| 124 | #define SIERRA_DEQ_PICTRL_PREG 0x161 |
| 125 | #define SIERRA_CPICAL_TMRVAL_MODE1_PREG 0x170 |
| 126 | #define SIERRA_CPICAL_TMRVAL_MODE0_PREG 0x171 |
| 127 | #define SIERRA_CPICAL_PICNT_MODE1_PREG 0x174 |
| 128 | #define SIERRA_CPI_OUTBUF_RATESEL_PREG 0x17C |
| 129 | #define SIERRA_CPICAL_RES_STARTCODE_MODE23_PREG 0x183 |
| 130 | #define SIERRA_LFPSDET_SUPPORT_PREG 0x188 |
| 131 | #define SIERRA_LFPSFILT_NS_PREG 0x18A |
| 132 | #define SIERRA_LFPSFILT_RD_PREG 0x18B |
| 133 | #define SIERRA_LFPSFILT_MP_PREG 0x18C |
| 134 | #define SIERRA_SIGDET_SUPPORT_PREG 0x190 |
| 135 | #define SIERRA_SDFILT_H2L_A_PREG 0x191 |
| 136 | #define SIERRA_SDFILT_L2H_PREG 0x193 |
| 137 | #define SIERRA_RXBUFFER_CTLECTRL_PREG 0x19E |
| 138 | #define SIERRA_RXBUFFER_RCDFECTRL_PREG 0x19F |
| 139 | #define SIERRA_RXBUFFER_DFECTRL_PREG 0x1A0 |
| 140 | #define SIERRA_DEQ_TAU_CTRL1_FAST_MAINT_PREG 0x14F |
| 141 | #define SIERRA_DEQ_TAU_CTRL1_SLOW_MAINT_PREG 0x150 |
| 142 | |
| 143 | #define SIERRA_PHY_CONFIG_CTRL_OFFSET 0xc000 |
| 144 | #define SIERRA_PHY_PLL_CFG 0xe |
| 145 | |
| 146 | #define SIERRA_MACRO_ID 0x00007364 |
| 147 | #define SIERRA_MAX_LANES 16 |
| 148 | #define PLL_LOCK_TIME 100 |
| 149 | |
| 150 | static const struct reg_field macro_id_type = |
| 151 | REG_FIELD(SIERRA_MACRO_ID_REG, 0, 15); |
| 152 | static const struct reg_field phy_pll_cfg_1 = |
| 153 | REG_FIELD(SIERRA_PHY_PLL_CFG, 1, 1); |
| 154 | static const struct reg_field pllctrl_lock = |
| 155 | REG_FIELD(SIERRA_PLLCTRL_STATUS_PREG, 0, 0); |
| 156 | |
| 157 | #define reset_control_assert(rst) cdns_reset_assert(rst) |
| 158 | #define reset_control_deassert(rst) cdns_reset_deassert(rst) |
| 159 | #define reset_control reset_ctl |
| 160 | |
| 161 | struct cdns_sierra_inst { |
| 162 | u32 phy_type; |
| 163 | u32 num_lanes; |
| 164 | u32 mlane; |
| 165 | struct reset_ctl_bulk *lnk_rst; |
| 166 | }; |
| 167 | |
| 168 | struct cdns_reg_pairs { |
| 169 | u16 val; |
| 170 | u32 off; |
| 171 | }; |
| 172 | |
| 173 | struct cdns_sierra_data { |
| 174 | u32 id_value; |
| 175 | u8 block_offset_shift; |
| 176 | u8 reg_offset_shift; |
| 177 | u32 pcie_cmn_regs; |
| 178 | u32 pcie_ln_regs; |
| 179 | u32 usb_cmn_regs; |
| 180 | u32 usb_ln_regs; |
| 181 | struct cdns_reg_pairs *pcie_cmn_vals; |
| 182 | struct cdns_reg_pairs *pcie_ln_vals; |
| 183 | struct cdns_reg_pairs *usb_cmn_vals; |
| 184 | struct cdns_reg_pairs *usb_ln_vals; |
| 185 | }; |
| 186 | |
| 187 | struct cdns_regmap_cdb_context { |
| 188 | struct udevice *dev; |
| 189 | void __iomem *base; |
| 190 | u8 reg_offset_shift; |
| 191 | }; |
| 192 | |
| 193 | struct cdns_sierra_phy { |
| 194 | struct udevice *dev; |
| 195 | void *base; |
| 196 | size_t size; |
| 197 | struct regmap *regmap; |
| 198 | struct cdns_sierra_data *init_data; |
| 199 | struct cdns_sierra_inst phys[SIERRA_MAX_LANES]; |
| 200 | struct reset_control *phy_rst; |
| 201 | struct regmap *regmap_lane_cdb[SIERRA_MAX_LANES]; |
| 202 | struct regmap *regmap_phy_config_ctrl; |
| 203 | struct regmap *regmap_common_cdb; |
| 204 | struct regmap_field *macro_id_type; |
| 205 | struct regmap_field *phy_pll_cfg_1; |
| 206 | struct regmap_field *pllctrl_lock[SIERRA_MAX_LANES]; |
| 207 | struct clk *clk; |
| 208 | struct clk *cmn_refclk; |
| 209 | struct clk *cmn_refclk1; |
| 210 | int nsubnodes; |
| 211 | u32 num_lanes; |
| 212 | bool autoconf; |
| 213 | }; |
| 214 | |
| 215 | static inline int cdns_reset_assert(struct reset_control *rst) |
| 216 | { |
| 217 | if (rst) |
| 218 | return reset_assert(rst); |
| 219 | else |
| 220 | return 0; |
| 221 | } |
| 222 | |
| 223 | static inline int cdns_reset_deassert(struct reset_control *rst) |
| 224 | { |
| 225 | if (rst) |
| 226 | return reset_deassert(rst); |
| 227 | else |
| 228 | return 0; |
| 229 | } |
| 230 | |
| 231 | static inline struct cdns_sierra_inst *phy_get_drvdata(struct phy *phy) |
| 232 | { |
| 233 | struct cdns_sierra_phy *sp = dev_get_priv(phy->dev); |
| 234 | int index; |
| 235 | |
| 236 | if (phy->id >= SIERRA_MAX_LANES) |
| 237 | return NULL; |
| 238 | |
| 239 | for (index = 0; index < sp->nsubnodes; index++) { |
| 240 | if (phy->id == sp->phys[index].mlane) |
| 241 | return &sp->phys[index]; |
| 242 | } |
| 243 | |
| 244 | return NULL; |
| 245 | } |
| 246 | |
| 247 | static int cdns_sierra_phy_init(struct phy *gphy) |
| 248 | { |
| 249 | struct cdns_sierra_inst *ins = phy_get_drvdata(gphy); |
| 250 | struct cdns_sierra_phy *phy = dev_get_priv(gphy->dev); |
| 251 | struct regmap *regmap = phy->regmap; |
| 252 | int i, j; |
| 253 | struct cdns_reg_pairs *cmn_vals, *ln_vals; |
| 254 | u32 num_cmn_regs, num_ln_regs; |
| 255 | |
| 256 | /* Initialise the PHY registers, unless auto configured */ |
| 257 | if (phy->autoconf) |
| 258 | return 0; |
| 259 | |
| 260 | clk_set_rate(phy->cmn_refclk, 25000000); |
| 261 | clk_set_rate(phy->cmn_refclk1, 25000000); |
| 262 | |
| 263 | if (ins->phy_type == PHY_TYPE_PCIE) { |
| 264 | num_cmn_regs = phy->init_data->pcie_cmn_regs; |
| 265 | num_ln_regs = phy->init_data->pcie_ln_regs; |
| 266 | cmn_vals = phy->init_data->pcie_cmn_vals; |
| 267 | ln_vals = phy->init_data->pcie_ln_vals; |
| 268 | } else if (ins->phy_type == PHY_TYPE_USB3) { |
| 269 | num_cmn_regs = phy->init_data->usb_cmn_regs; |
| 270 | num_ln_regs = phy->init_data->usb_ln_regs; |
| 271 | cmn_vals = phy->init_data->usb_cmn_vals; |
| 272 | ln_vals = phy->init_data->usb_ln_vals; |
| 273 | } else { |
| 274 | return -EINVAL; |
| 275 | } |
| 276 | |
| 277 | regmap = phy->regmap_common_cdb; |
| 278 | for (j = 0; j < num_cmn_regs ; j++) |
| 279 | regmap_write(regmap, cmn_vals[j].off, cmn_vals[j].val); |
| 280 | |
| 281 | for (i = 0; i < ins->num_lanes; i++) { |
| 282 | for (j = 0; j < num_ln_regs ; j++) { |
| 283 | regmap = phy->regmap_lane_cdb[i + ins->mlane]; |
| 284 | regmap_write(regmap, ln_vals[j].off, ln_vals[j].val); |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | return 0; |
| 289 | } |
| 290 | |
| 291 | static int cdns_sierra_phy_on(struct phy *gphy) |
| 292 | { |
| 293 | struct cdns_sierra_inst *ins = phy_get_drvdata(gphy); |
| 294 | struct cdns_sierra_phy *sp = dev_get_priv(gphy->dev); |
| 295 | struct udevice *dev = gphy->dev; |
| 296 | u32 val; |
| 297 | int ret; |
| 298 | |
| 299 | /* Take the PHY lane group out of reset */ |
| 300 | ret = reset_deassert_bulk(ins->lnk_rst); |
| 301 | if (ret) { |
| 302 | dev_err(dev, "Failed to take the PHY lane out of reset\n"); |
| 303 | return ret; |
| 304 | } |
| 305 | |
| 306 | ret = regmap_field_read_poll_timeout(sp->pllctrl_lock[ins->mlane], |
| 307 | val, val, 1000, PLL_LOCK_TIME); |
| 308 | if (ret < 0) |
| 309 | dev_err(dev, "PLL lock of lane failed\n"); |
| 310 | |
| 311 | reset_control_assert(sp->phy_rst); |
| 312 | reset_control_deassert(sp->phy_rst); |
| 313 | |
| 314 | return ret; |
| 315 | } |
| 316 | |
| 317 | static int cdns_sierra_phy_off(struct phy *gphy) |
| 318 | { |
| 319 | struct cdns_sierra_inst *ins = phy_get_drvdata(gphy); |
| 320 | |
| 321 | return reset_assert_bulk(ins->lnk_rst); |
| 322 | } |
| 323 | |
| 324 | static int cdns_sierra_phy_reset(struct phy *gphy) |
| 325 | { |
| 326 | struct cdns_sierra_phy *sp = dev_get_priv(gphy->dev); |
| 327 | |
| 328 | reset_control_assert(sp->phy_rst); |
| 329 | reset_control_deassert(sp->phy_rst); |
| 330 | return 0; |
| 331 | }; |
| 332 | |
| 333 | static const struct phy_ops ops = { |
| 334 | .init = cdns_sierra_phy_init, |
| 335 | .power_on = cdns_sierra_phy_on, |
| 336 | .power_off = cdns_sierra_phy_off, |
| 337 | .reset = cdns_sierra_phy_reset, |
| 338 | }; |
| 339 | |
| 340 | static int cdns_sierra_get_optional(struct cdns_sierra_inst *inst, |
| 341 | ofnode child) |
| 342 | { |
| 343 | if (ofnode_read_u32(child, "reg", &inst->mlane)) |
| 344 | return -EINVAL; |
| 345 | |
| 346 | if (ofnode_read_u32(child, "cdns,num-lanes", &inst->num_lanes)) |
| 347 | return -EINVAL; |
| 348 | |
| 349 | if (ofnode_read_u32(child, "cdns,phy-type", &inst->phy_type)) |
| 350 | return -EINVAL; |
| 351 | |
| 352 | return 0; |
| 353 | } |
| 354 | |
| 355 | static struct regmap *cdns_regmap_init(struct udevice *dev, void __iomem *base, |
| 356 | u32 block_offset, u8 block_offset_shift, |
| 357 | u8 reg_offset_shift) |
| 358 | { |
| 359 | struct cdns_sierra_phy *sp = dev_get_priv(dev); |
| 360 | struct regmap_config config; |
| 361 | |
| 362 | config.r_start = (ulong)(base + (block_offset << block_offset_shift)); |
| 363 | config.r_size = sp->size - (block_offset << block_offset_shift); |
| 364 | config.reg_offset_shift = reg_offset_shift; |
| 365 | config.width = REGMAP_SIZE_16; |
| 366 | |
| 367 | return devm_regmap_init(dev, NULL, NULL, &config); |
| 368 | } |
| 369 | |
| 370 | static int cdns_regfield_init(struct cdns_sierra_phy *sp) |
| 371 | { |
| 372 | struct udevice *dev = sp->dev; |
| 373 | struct regmap_field *field; |
| 374 | struct regmap *regmap; |
| 375 | int i; |
| 376 | |
| 377 | regmap = sp->regmap_common_cdb; |
| 378 | field = devm_regmap_field_alloc(dev, regmap, macro_id_type); |
| 379 | if (IS_ERR(field)) { |
| 380 | dev_err(dev, "MACRO_ID_TYPE reg field init failed\n"); |
| 381 | return PTR_ERR(field); |
| 382 | } |
| 383 | sp->macro_id_type = field; |
| 384 | |
| 385 | regmap = sp->regmap_phy_config_ctrl; |
| 386 | field = devm_regmap_field_alloc(dev, regmap, phy_pll_cfg_1); |
| 387 | if (IS_ERR(field)) { |
| 388 | dev_err(dev, "PHY_PLL_CFG_1 reg field init failed\n"); |
| 389 | return PTR_ERR(field); |
| 390 | } |
| 391 | sp->phy_pll_cfg_1 = field; |
| 392 | |
| 393 | for (i = 0; i < SIERRA_MAX_LANES; i++) { |
| 394 | regmap = sp->regmap_lane_cdb[i]; |
| 395 | field = devm_regmap_field_alloc(dev, regmap, pllctrl_lock); |
| 396 | if (IS_ERR(field)) { |
| 397 | dev_err(dev, "P%d_ENABLE reg field init failed\n", i); |
| 398 | return PTR_ERR(field); |
| 399 | } |
| 400 | sp->pllctrl_lock[i] = field; |
| 401 | } |
| 402 | |
| 403 | return 0; |
| 404 | } |
| 405 | |
| 406 | static int cdns_regmap_init_blocks(struct cdns_sierra_phy *sp, |
| 407 | void __iomem *base, u8 block_offset_shift, |
| 408 | u8 reg_offset_shift) |
| 409 | { |
| 410 | struct udevice *dev = sp->dev; |
| 411 | struct regmap *regmap; |
| 412 | u32 block_offset; |
| 413 | int i; |
| 414 | |
| 415 | for (i = 0; i < SIERRA_MAX_LANES; i++) { |
| 416 | block_offset = SIERRA_LANE_CDB_OFFSET(i, reg_offset_shift); |
| 417 | regmap = cdns_regmap_init(dev, base, block_offset, |
| 418 | block_offset_shift, reg_offset_shift); |
| 419 | if (IS_ERR(regmap)) { |
| 420 | dev_err(dev, "Failed to init lane CDB regmap\n"); |
| 421 | return PTR_ERR(regmap); |
| 422 | } |
| 423 | sp->regmap_lane_cdb[i] = regmap; |
| 424 | } |
| 425 | |
| 426 | regmap = cdns_regmap_init(dev, base, SIERRA_COMMON_CDB_OFFSET, |
| 427 | block_offset_shift, reg_offset_shift); |
| 428 | if (IS_ERR(regmap)) { |
| 429 | dev_err(dev, "Failed to init common CDB regmap\n"); |
| 430 | return PTR_ERR(regmap); |
| 431 | } |
| 432 | sp->regmap_common_cdb = regmap; |
| 433 | |
| 434 | regmap = cdns_regmap_init(dev, base, SIERRA_PHY_CONFIG_CTRL_OFFSET, |
| 435 | block_offset_shift, reg_offset_shift); |
| 436 | if (IS_ERR(regmap)) { |
| 437 | dev_err(dev, "Failed to init PHY config and control regmap\n"); |
| 438 | return PTR_ERR(regmap); |
| 439 | } |
| 440 | sp->regmap_phy_config_ctrl = regmap; |
| 441 | |
| 442 | return 0; |
| 443 | } |
| 444 | |
| 445 | static int cdns_sierra_phy_probe(struct udevice *dev) |
| 446 | { |
| 447 | struct cdns_sierra_phy *sp = dev_get_priv(dev); |
| 448 | struct cdns_sierra_data *data; |
| 449 | unsigned int id_value; |
| 450 | int ret, node = 0; |
| 451 | struct clk *clk; |
| 452 | ofnode child; |
| 453 | |
| 454 | sp->dev = dev; |
| 455 | |
| 456 | sp->base = devfdt_remap_addr_index(dev, 0); |
| 457 | if (!sp->base) { |
| 458 | dev_err(dev, "unable to map regs\n"); |
| 459 | return -ENOMEM; |
| 460 | } |
| 461 | devfdt_get_addr_size_index(dev, 0, (fdt_size_t *)&sp->size); |
| 462 | |
| 463 | /* Get init data for this PHY */ |
| 464 | data = (struct cdns_sierra_data *)dev_get_driver_data(dev); |
| 465 | sp->init_data = data; |
| 466 | |
| 467 | ret = cdns_regmap_init_blocks(sp, sp->base, data->block_offset_shift, |
| 468 | data->reg_offset_shift); |
| 469 | if (ret) |
| 470 | return ret; |
| 471 | |
| 472 | ret = cdns_regfield_init(sp); |
| 473 | if (ret) |
| 474 | return ret; |
| 475 | |
| 476 | sp->clk = devm_clk_get_optional(dev, "phy_clk"); |
| 477 | if (IS_ERR(sp->clk)) { |
| 478 | dev_err(dev, "failed to get clock phy_clk\n"); |
| 479 | return PTR_ERR(sp->clk); |
| 480 | } |
| 481 | |
| 482 | sp->phy_rst = devm_reset_control_get(dev, "sierra_reset"); |
| 483 | if (IS_ERR(sp->phy_rst)) { |
| 484 | dev_err(dev, "failed to get reset\n"); |
| 485 | return PTR_ERR(sp->phy_rst); |
| 486 | } |
| 487 | |
| 488 | clk = devm_clk_get_optional(dev, "cmn_refclk_dig_div"); |
| 489 | if (IS_ERR(clk)) { |
| 490 | dev_err(dev, "cmn_refclk clock not found\n"); |
| 491 | ret = PTR_ERR(clk); |
| 492 | return ret; |
| 493 | } |
| 494 | sp->cmn_refclk = clk; |
| 495 | |
| 496 | clk = devm_clk_get_optional(dev, "cmn_refclk1_dig_div"); |
| 497 | if (IS_ERR(clk)) { |
| 498 | dev_err(dev, "cmn_refclk1 clock not found\n"); |
| 499 | ret = PTR_ERR(clk); |
| 500 | return ret; |
| 501 | } |
| 502 | sp->cmn_refclk1 = clk; |
| 503 | |
| 504 | ret = clk_prepare_enable(sp->clk); |
| 505 | if (ret) |
| 506 | return ret; |
| 507 | |
| 508 | /* Check that PHY is present */ |
| 509 | regmap_field_read(sp->macro_id_type, &id_value); |
| 510 | if (sp->init_data->id_value != id_value) { |
| 511 | dev_err(dev, "PHY not found 0x%x vs 0x%x\n", |
| 512 | sp->init_data->id_value, id_value); |
| 513 | ret = -EINVAL; |
| 514 | goto clk_disable; |
| 515 | } |
| 516 | |
| 517 | sp->autoconf = dev_read_bool(dev, "cdns,autoconf"); |
| 518 | |
| 519 | ofnode_for_each_subnode(child, dev_ofnode(dev)) { |
| 520 | sp->phys[node].lnk_rst = devm_reset_bulk_get_by_node(dev, |
| 521 | child); |
| 522 | if (IS_ERR(sp->phys[node].lnk_rst)) { |
| 523 | ret = PTR_ERR(sp->phys[node].lnk_rst); |
| 524 | dev_err(dev, "failed to get reset %s\n", |
| 525 | ofnode_get_name(child)); |
| 526 | goto put_child2; |
| 527 | } |
| 528 | |
| 529 | if (!sp->autoconf) { |
| 530 | ret = cdns_sierra_get_optional(&sp->phys[node], child); |
| 531 | if (ret) { |
| 532 | dev_err(dev, "missing property in node %s\n", |
| 533 | ofnode_get_name(child)); |
| 534 | goto put_child; |
| 535 | } |
| 536 | } |
| 537 | sp->num_lanes += sp->phys[node].num_lanes; |
| 538 | |
| 539 | node++; |
| 540 | } |
| 541 | sp->nsubnodes = node; |
| 542 | |
| 543 | /* If more than one subnode, configure the PHY as multilink */ |
| 544 | if (!sp->autoconf && sp->nsubnodes > 1) |
| 545 | regmap_field_write(sp->phy_pll_cfg_1, 0x1); |
| 546 | |
| 547 | reset_control_deassert(sp->phy_rst); |
| 548 | dev_info(dev, "sierra probed\n"); |
| 549 | return 0; |
| 550 | |
| 551 | put_child: |
| 552 | node++; |
| 553 | put_child2: |
| 554 | |
| 555 | clk_disable: |
| 556 | clk_disable_unprepare(sp->clk); |
| 557 | return ret; |
| 558 | } |
| 559 | |
| 560 | static int cdns_sierra_phy_remove(struct udevice *dev) |
| 561 | { |
| 562 | struct cdns_sierra_phy *phy = dev_get_priv(dev); |
| 563 | int i; |
| 564 | |
| 565 | reset_control_assert(phy->phy_rst); |
| 566 | |
| 567 | /* |
| 568 | * The device level resets will be put automatically. |
| 569 | * Need to put the subnode resets here though. |
| 570 | */ |
| 571 | for (i = 0; i < phy->nsubnodes; i++) |
| 572 | reset_assert_bulk(phy->phys[i].lnk_rst); |
| 573 | |
| 574 | return 0; |
| 575 | } |
| 576 | |
| 577 | /* refclk100MHz_32b_PCIe_cmn_pll_ext_ssc */ |
| 578 | static struct cdns_reg_pairs cdns_pcie_cmn_regs_ext_ssc[] = { |
| 579 | {0x2106, SIERRA_CMN_PLLLC_LF_COEFF_MODE1_PREG}, |
| 580 | {0x2106, SIERRA_CMN_PLLLC_LF_COEFF_MODE0_PREG}, |
| 581 | {0x8A06, SIERRA_CMN_PLLLC_BWCAL_MODE1_PREG}, |
| 582 | {0x8A06, SIERRA_CMN_PLLLC_BWCAL_MODE0_PREG}, |
| 583 | {0x1B1B, SIERRA_CMN_PLLLC_SS_TIME_STEPSIZE_MODE_PREG} |
| 584 | }; |
| 585 | |
| 586 | /* refclk100MHz_32b_PCIe_ln_ext_ssc */ |
| 587 | static struct cdns_reg_pairs cdns_pcie_ln_regs_ext_ssc[] = { |
| 588 | {0x813E, SIERRA_CLKPATHCTRL_TMR_PREG}, |
| 589 | {0x8047, SIERRA_RX_CREQ_FLTR_A_MODE3_PREG}, |
| 590 | {0x808F, SIERRA_RX_CREQ_FLTR_A_MODE2_PREG}, |
| 591 | {0x808F, SIERRA_RX_CREQ_FLTR_A_MODE1_PREG}, |
| 592 | {0x808F, SIERRA_RX_CREQ_FLTR_A_MODE0_PREG}, |
| 593 | {0x033C, SIERRA_RX_CTLE_MAINTENANCE_PREG}, |
| 594 | {0x44CC, SIERRA_CREQ_EQ_OPEN_EYE_THRESH_PREG} |
| 595 | }; |
| 596 | |
| 597 | /* refclk100MHz_20b_USB_cmn_pll_ext_ssc */ |
| 598 | static struct cdns_reg_pairs cdns_usb_cmn_regs_ext_ssc[] = { |
| 599 | {0x2085, SIERRA_CMN_PLLLC_LF_COEFF_MODE1_PREG}, |
| 600 | {0x2085, SIERRA_CMN_PLLLC_LF_COEFF_MODE0_PREG}, |
| 601 | {0x0000, SIERRA_CMN_PLLLC_BWCAL_MODE0_PREG}, |
| 602 | {0x0000, SIERRA_CMN_PLLLC_SS_TIME_STEPSIZE_MODE_PREG} |
| 603 | }; |
| 604 | |
| 605 | /* refclk100MHz_20b_USB_ln_ext_ssc */ |
| 606 | static struct cdns_reg_pairs cdns_usb_ln_regs_ext_ssc[] = { |
| 607 | {0xFE0A, SIERRA_DET_STANDEC_A_PREG}, |
| 608 | {0x000F, SIERRA_DET_STANDEC_B_PREG}, |
| 609 | {0x00A5, SIERRA_DET_STANDEC_C_PREG}, |
| 610 | {0x69ad, SIERRA_DET_STANDEC_D_PREG}, |
| 611 | {0x0241, SIERRA_DET_STANDEC_E_PREG}, |
| 612 | {0x0010, SIERRA_PSM_LANECAL_DLY_A1_RESETS_PREG}, |
| 613 | {0x0014, SIERRA_PSM_A0IN_TMR_PREG}, |
| 614 | {0xCF00, SIERRA_PSM_DIAG_PREG}, |
| 615 | {0x001F, SIERRA_PSC_TX_A0_PREG}, |
| 616 | {0x0007, SIERRA_PSC_TX_A1_PREG}, |
| 617 | {0x0003, SIERRA_PSC_TX_A2_PREG}, |
| 618 | {0x0003, SIERRA_PSC_TX_A3_PREG}, |
| 619 | {0x0FFF, SIERRA_PSC_RX_A0_PREG}, |
| 620 | {0x0619, SIERRA_PSC_RX_A1_PREG}, |
| 621 | {0x0003, SIERRA_PSC_RX_A2_PREG}, |
| 622 | {0x0001, SIERRA_PSC_RX_A3_PREG}, |
| 623 | {0x0001, SIERRA_PLLCTRL_SUBRATE_PREG}, |
| 624 | {0x0406, SIERRA_PLLCTRL_GEN_D_PREG}, |
| 625 | {0x5233, SIERRA_PLLCTRL_CPGAIN_MODE_PREG}, |
| 626 | {0x00CA, SIERRA_CLKPATH_BIASTRIM_PREG}, |
| 627 | {0x2512, SIERRA_DFE_BIASTRIM_PREG}, |
| 628 | {0x0000, SIERRA_DRVCTRL_ATTEN_PREG}, |
| 629 | {0x873E, SIERRA_CLKPATHCTRL_TMR_PREG}, |
| 630 | {0x03CF, SIERRA_RX_CREQ_FLTR_A_MODE1_PREG}, |
| 631 | {0x01CE, SIERRA_RX_CREQ_FLTR_A_MODE0_PREG}, |
| 632 | {0x7B3C, SIERRA_CREQ_CCLKDET_MODE01_PREG}, |
| 633 | {0x033F, SIERRA_RX_CTLE_MAINTENANCE_PREG}, |
| 634 | {0x3232, SIERRA_CREQ_FSMCLK_SEL_PREG}, |
| 635 | {0x0000, SIERRA_CREQ_EQ_CTRL_PREG}, |
| 636 | {0x8000, SIERRA_CREQ_SPARE_PREG}, |
| 637 | {0xCC44, SIERRA_CREQ_EQ_OPEN_EYE_THRESH_PREG}, |
| 638 | {0x8453, SIERRA_CTLELUT_CTRL_PREG}, |
| 639 | {0x4110, SIERRA_DFE_ECMP_RATESEL_PREG}, |
| 640 | {0x4110, SIERRA_DFE_SMP_RATESEL_PREG}, |
| 641 | {0x0002, SIERRA_DEQ_PHALIGN_CTRL}, |
| 642 | {0x3200, SIERRA_DEQ_CONCUR_CTRL1_PREG}, |
| 643 | {0x5064, SIERRA_DEQ_CONCUR_CTRL2_PREG}, |
| 644 | {0x0030, SIERRA_DEQ_EPIPWR_CTRL2_PREG}, |
| 645 | {0x0048, SIERRA_DEQ_FAST_MAINT_CYCLES_PREG}, |
| 646 | {0x5A5A, SIERRA_DEQ_ERRCMP_CTRL_PREG}, |
| 647 | {0x02F5, SIERRA_DEQ_OFFSET_CTRL_PREG}, |
| 648 | {0x02F5, SIERRA_DEQ_GAIN_CTRL_PREG}, |
| 649 | {0x9A8A, SIERRA_DEQ_VGATUNE_CTRL_PREG}, |
| 650 | {0x0014, SIERRA_DEQ_GLUT0}, |
| 651 | {0x0014, SIERRA_DEQ_GLUT1}, |
| 652 | {0x0014, SIERRA_DEQ_GLUT2}, |
| 653 | {0x0014, SIERRA_DEQ_GLUT3}, |
| 654 | {0x0014, SIERRA_DEQ_GLUT4}, |
| 655 | {0x0014, SIERRA_DEQ_GLUT5}, |
| 656 | {0x0014, SIERRA_DEQ_GLUT6}, |
| 657 | {0x0014, SIERRA_DEQ_GLUT7}, |
| 658 | {0x0014, SIERRA_DEQ_GLUT8}, |
| 659 | {0x0014, SIERRA_DEQ_GLUT9}, |
| 660 | {0x0014, SIERRA_DEQ_GLUT10}, |
| 661 | {0x0014, SIERRA_DEQ_GLUT11}, |
| 662 | {0x0014, SIERRA_DEQ_GLUT12}, |
| 663 | {0x0014, SIERRA_DEQ_GLUT13}, |
| 664 | {0x0014, SIERRA_DEQ_GLUT14}, |
| 665 | {0x0014, SIERRA_DEQ_GLUT15}, |
| 666 | {0x0014, SIERRA_DEQ_GLUT16}, |
| 667 | {0x0BAE, SIERRA_DEQ_ALUT0}, |
| 668 | {0x0AEB, SIERRA_DEQ_ALUT1}, |
| 669 | {0x0A28, SIERRA_DEQ_ALUT2}, |
| 670 | {0x0965, SIERRA_DEQ_ALUT3}, |
| 671 | {0x08A2, SIERRA_DEQ_ALUT4}, |
| 672 | {0x07DF, SIERRA_DEQ_ALUT5}, |
| 673 | {0x071C, SIERRA_DEQ_ALUT6}, |
| 674 | {0x0659, SIERRA_DEQ_ALUT7}, |
| 675 | {0x0596, SIERRA_DEQ_ALUT8}, |
| 676 | {0x0514, SIERRA_DEQ_ALUT9}, |
| 677 | {0x0492, SIERRA_DEQ_ALUT10}, |
| 678 | {0x0410, SIERRA_DEQ_ALUT11}, |
| 679 | {0x038E, SIERRA_DEQ_ALUT12}, |
| 680 | {0x030C, SIERRA_DEQ_ALUT13}, |
| 681 | {0x03F4, SIERRA_DEQ_DFETAP_CTRL_PREG}, |
| 682 | {0x0001, SIERRA_DFE_EN_1010_IGNORE_PREG}, |
| 683 | {0x3C01, SIERRA_DEQ_TAU_CTRL1_FAST_MAINT_PREG}, |
| 684 | {0x3C40, SIERRA_DEQ_TAU_CTRL1_SLOW_MAINT_PREG}, |
| 685 | {0x1C08, SIERRA_DEQ_TAU_CTRL2_PREG}, |
| 686 | {0x0033, SIERRA_DEQ_PICTRL_PREG}, |
| 687 | {0x0400, SIERRA_CPICAL_TMRVAL_MODE1_PREG}, |
| 688 | {0x0330, SIERRA_CPICAL_TMRVAL_MODE0_PREG}, |
| 689 | {0x01FF, SIERRA_CPICAL_PICNT_MODE1_PREG}, |
| 690 | {0x0009, SIERRA_CPI_OUTBUF_RATESEL_PREG}, |
| 691 | {0x3232, SIERRA_CPICAL_RES_STARTCODE_MODE23_PREG}, |
| 692 | {0x0005, SIERRA_LFPSDET_SUPPORT_PREG}, |
| 693 | {0x000F, SIERRA_LFPSFILT_NS_PREG}, |
| 694 | {0x0009, SIERRA_LFPSFILT_RD_PREG}, |
| 695 | {0x0001, SIERRA_LFPSFILT_MP_PREG}, |
| 696 | {0x8013, SIERRA_SDFILT_H2L_A_PREG}, |
| 697 | {0x8009, SIERRA_SDFILT_L2H_PREG}, |
| 698 | {0x0024, SIERRA_RXBUFFER_CTLECTRL_PREG}, |
| 699 | {0x0020, SIERRA_RXBUFFER_RCDFECTRL_PREG}, |
| 700 | {0x4243, SIERRA_RXBUFFER_DFECTRL_PREG} |
| 701 | }; |
| 702 | |
| 703 | static const struct cdns_sierra_data cdns_map_sierra = { |
| 704 | SIERRA_MACRO_ID, |
| 705 | 0x2, |
| 706 | 0x2, |
| 707 | ARRAY_SIZE(cdns_pcie_cmn_regs_ext_ssc), |
| 708 | ARRAY_SIZE(cdns_pcie_ln_regs_ext_ssc), |
| 709 | ARRAY_SIZE(cdns_usb_cmn_regs_ext_ssc), |
| 710 | ARRAY_SIZE(cdns_usb_ln_regs_ext_ssc), |
| 711 | cdns_pcie_cmn_regs_ext_ssc, |
| 712 | cdns_pcie_ln_regs_ext_ssc, |
| 713 | cdns_usb_cmn_regs_ext_ssc, |
| 714 | cdns_usb_ln_regs_ext_ssc, |
| 715 | }; |
| 716 | |
| 717 | static const struct cdns_sierra_data cdns_ti_map_sierra = { |
| 718 | SIERRA_MACRO_ID, |
| 719 | 0x0, |
| 720 | 0x1, |
| 721 | ARRAY_SIZE(cdns_pcie_cmn_regs_ext_ssc), |
| 722 | ARRAY_SIZE(cdns_pcie_ln_regs_ext_ssc), |
| 723 | ARRAY_SIZE(cdns_usb_cmn_regs_ext_ssc), |
| 724 | ARRAY_SIZE(cdns_usb_ln_regs_ext_ssc), |
| 725 | cdns_pcie_cmn_regs_ext_ssc, |
| 726 | cdns_pcie_ln_regs_ext_ssc, |
| 727 | cdns_usb_cmn_regs_ext_ssc, |
| 728 | cdns_usb_ln_regs_ext_ssc, |
| 729 | }; |
| 730 | |
| 731 | static const struct udevice_id cdns_sierra_id_table[] = { |
| 732 | { |
| 733 | .compatible = "cdns,sierra-phy-t0", |
| 734 | .data = (ulong)&cdns_map_sierra, |
| 735 | }, |
| 736 | { |
| 737 | .compatible = "ti,sierra-phy-t0", |
| 738 | .data = (ulong)&cdns_ti_map_sierra, |
| 739 | }, |
| 740 | {} |
| 741 | }; |
| 742 | |
| 743 | U_BOOT_DRIVER(sierra_phy_provider) = { |
| 744 | .name = "cdns,sierra", |
| 745 | .id = UCLASS_PHY, |
| 746 | .of_match = cdns_sierra_id_table, |
| 747 | .probe = cdns_sierra_phy_probe, |
| 748 | .remove = cdns_sierra_phy_remove, |
| 749 | .ops = &ops, |
| 750 | .priv_auto = sizeof(struct cdns_sierra_phy), |
| 751 | }; |