Tom Rini | 10e4779 | 2018-05-06 17:58:06 -0400 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 2 | /* |
Nishanth Menon | eaa39c6 | 2023-11-01 15:56:03 -0500 | [diff] [blame] | 3 | * Copyright (C) 2017 Texas Instruments Incorporated - https://www.ti.com/ |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 4 | * Written by Jean-Jacques Hiblot <jjhiblot@ti.com> |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 5 | */ |
| 6 | |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 7 | #include <dm.h> |
| 8 | #include <dm/device.h> |
| 9 | #include <generic-phy.h> |
Simon Glass | 3ba929a | 2020-10-30 21:38:53 -0600 | [diff] [blame] | 10 | #include <asm/global_data.h> |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 11 | #include <asm/io.h> |
| 12 | #include <asm/arch/sys_proto.h> |
| 13 | #include <syscon.h> |
| 14 | #include <regmap.h> |
Simon Glass | 4dcacfc | 2020-05-10 11:40:13 -0600 | [diff] [blame] | 15 | #include <linux/bitops.h> |
Simon Glass | dbd7954 | 2020-05-10 11:40:11 -0600 | [diff] [blame] | 16 | #include <linux/delay.h> |
Simon Glass | d66c5f7 | 2020-02-03 07:36:15 -0700 | [diff] [blame] | 17 | #include <linux/err.h> |
Simon Glass | bdd5f81 | 2023-09-14 18:21:46 -0600 | [diff] [blame] | 18 | #include <linux/printk.h> |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 19 | |
| 20 | /* PLLCTRL Registers */ |
| 21 | #define PLL_STATUS 0x00000004 |
| 22 | #define PLL_GO 0x00000008 |
| 23 | #define PLL_CONFIGURATION1 0x0000000C |
| 24 | #define PLL_CONFIGURATION2 0x00000010 |
| 25 | #define PLL_CONFIGURATION3 0x00000014 |
| 26 | #define PLL_CONFIGURATION4 0x00000020 |
| 27 | |
| 28 | #define PLL_REGM_MASK 0x001FFE00 |
| 29 | #define PLL_REGM_SHIFT 9 |
| 30 | #define PLL_REGM_F_MASK 0x0003FFFF |
| 31 | #define PLL_REGM_F_SHIFT 0 |
| 32 | #define PLL_REGN_MASK 0x000001FE |
| 33 | #define PLL_REGN_SHIFT 1 |
| 34 | #define PLL_SELFREQDCO_MASK 0x0000000E |
| 35 | #define PLL_SELFREQDCO_SHIFT 1 |
| 36 | #define PLL_SD_MASK 0x0003FC00 |
| 37 | #define PLL_SD_SHIFT 10 |
| 38 | #define SET_PLL_GO 0x1 |
| 39 | #define PLL_TICOPWDN BIT(16) |
| 40 | #define PLL_LDOPWDN BIT(15) |
| 41 | #define PLL_LOCK 0x2 |
| 42 | #define PLL_IDLE 0x1 |
| 43 | |
| 44 | /* Software rest for the SATA PLL (in CTRL_CORE_SMA_SW_0 register)*/ |
| 45 | #define SATA_PLL_SOFT_RESET (1<<18) |
| 46 | |
| 47 | /* PHY POWER CONTROL Register */ |
Roger Quadros | ed55562 | 2019-11-06 16:21:18 +0200 | [diff] [blame] | 48 | #define PIPE3_PHY_PWRCTL_CLK_CMD_MASK GENMASK(21, 14) |
| 49 | #define PIPE3_PHY_PWRCTL_CLK_CMD_SHIFT 14 |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 50 | |
Roger Quadros | ed55562 | 2019-11-06 16:21:18 +0200 | [diff] [blame] | 51 | #define PIPE3_PHY_PWRCTL_CLK_FREQ_MASK GENMASK(31, 22) |
| 52 | #define PIPE3_PHY_PWRCTL_CLK_FREQ_SHIFT 22 |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 53 | |
Roger Quadros | ed55562 | 2019-11-06 16:21:18 +0200 | [diff] [blame] | 54 | #define PIPE3_PHY_RX_POWERON (0x1 << PIPE3_PHY_PWRCTL_CLK_CMD_SHIFT) |
| 55 | #define PIPE3_PHY_TX_POWERON (0x2 << PIPE3_PHY_PWRCTL_CLK_CMD_SHIFT) |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 56 | |
Roger Quadros | 80c69c6 | 2019-11-06 16:21:17 +0200 | [diff] [blame] | 57 | /* PHY RX Registers */ |
| 58 | #define PIPE3_PHY_RX_ANA_PROGRAMMABILITY 0x0000000C |
| 59 | #define INTERFACE_MASK GENMASK(31, 27) |
| 60 | #define INTERFACE_SHIFT 27 |
| 61 | #define INTERFACE_MODE_USBSS BIT(4) |
| 62 | #define INTERFACE_MODE_SATA_1P5 BIT(3) |
| 63 | #define INTERFACE_MODE_SATA_3P0 BIT(2) |
| 64 | #define INTERFACE_MODE_PCIE BIT(0) |
| 65 | |
| 66 | #define LOSD_MASK GENMASK(17, 14) |
| 67 | #define LOSD_SHIFT 14 |
| 68 | #define MEM_PLLDIV GENMASK(6, 5) |
| 69 | |
| 70 | #define PIPE3_PHY_RX_TRIM 0x0000001C |
| 71 | #define MEM_DLL_TRIM_SEL_MASK GENMASK(31, 30) |
| 72 | #define MEM_DLL_TRIM_SHIFT 30 |
| 73 | |
| 74 | #define PIPE3_PHY_RX_DLL 0x00000024 |
| 75 | #define MEM_DLL_PHINT_RATE_MASK GENMASK(31, 30) |
| 76 | #define MEM_DLL_PHINT_RATE_SHIFT 30 |
| 77 | |
| 78 | #define PIPE3_PHY_RX_DIGITAL_MODES 0x00000028 |
| 79 | #define MEM_HS_RATE_MASK GENMASK(28, 27) |
| 80 | #define MEM_HS_RATE_SHIFT 27 |
| 81 | #define MEM_OVRD_HS_RATE BIT(26) |
| 82 | #define MEM_OVRD_HS_RATE_SHIFT 26 |
| 83 | #define MEM_CDR_FASTLOCK BIT(23) |
| 84 | #define MEM_CDR_FASTLOCK_SHIFT 23 |
| 85 | #define MEM_CDR_LBW_MASK GENMASK(22, 21) |
| 86 | #define MEM_CDR_LBW_SHIFT 21 |
| 87 | #define MEM_CDR_STEPCNT_MASK GENMASK(20, 19) |
| 88 | #define MEM_CDR_STEPCNT_SHIFT 19 |
| 89 | #define MEM_CDR_STL_MASK GENMASK(18, 16) |
| 90 | #define MEM_CDR_STL_SHIFT 16 |
| 91 | #define MEM_CDR_THR_MASK GENMASK(15, 13) |
| 92 | #define MEM_CDR_THR_SHIFT 13 |
| 93 | #define MEM_CDR_THR_MODE BIT(12) |
| 94 | #define MEM_CDR_THR_MODE_SHIFT 12 |
| 95 | #define MEM_CDR_2NDO_SDM_MODE BIT(11) |
| 96 | #define MEM_CDR_2NDO_SDM_MODE_SHIFT 11 |
| 97 | |
| 98 | #define PIPE3_PHY_RX_EQUALIZER 0x00000038 |
| 99 | #define MEM_EQLEV_MASK GENMASK(31, 16) |
| 100 | #define MEM_EQLEV_SHIFT 16 |
| 101 | #define MEM_EQFTC_MASK GENMASK(15, 11) |
| 102 | #define MEM_EQFTC_SHIFT 11 |
| 103 | #define MEM_EQCTL_MASK GENMASK(10, 7) |
| 104 | #define MEM_EQCTL_SHIFT 7 |
| 105 | #define MEM_OVRD_EQLEV BIT(2) |
| 106 | #define MEM_OVRD_EQLEV_SHIFT 2 |
| 107 | #define MEM_OVRD_EQFTC BIT(1) |
| 108 | #define MEM_OVRD_EQFTC_SHIFT 1 |
| 109 | |
| 110 | #define SATA_PHY_RX_IO_AND_A2D_OVERRIDES 0x44 |
| 111 | #define MEM_CDR_LOS_SOURCE_MASK GENMASK(10, 9) |
| 112 | #define MEM_CDR_LOS_SOURCE_SHIFT 9 |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 113 | |
| 114 | #define PLL_IDLE_TIME 100 /* in milliseconds */ |
| 115 | #define PLL_LOCK_TIME 100 /* in milliseconds */ |
| 116 | |
Roger Quadros | cf60864 | 2019-11-06 16:21:16 +0200 | [diff] [blame] | 117 | enum pipe3_mode { PIPE3_MODE_PCIE = 1, |
| 118 | PIPE3_MODE_SATA, |
| 119 | PIPE3_MODE_USBSS }; |
| 120 | |
Roger Quadros | 80c69c6 | 2019-11-06 16:21:17 +0200 | [diff] [blame] | 121 | struct pipe3_settings { |
| 122 | u8 ana_interface; |
| 123 | u8 ana_losd; |
| 124 | u8 dig_fastlock; |
| 125 | u8 dig_lbw; |
| 126 | u8 dig_stepcnt; |
| 127 | u8 dig_stl; |
| 128 | u8 dig_thr; |
| 129 | u8 dig_thr_mode; |
| 130 | u8 dig_2ndo_sdm_mode; |
| 131 | u8 dig_hs_rate; |
| 132 | u8 dig_ovrd_hs_rate; |
| 133 | u8 dll_trim_sel; |
| 134 | u8 dll_phint_rate; |
| 135 | u8 eq_lev; |
| 136 | u8 eq_ftc; |
| 137 | u8 eq_ctl; |
| 138 | u8 eq_ovrd_lev; |
| 139 | u8 eq_ovrd_ftc; |
| 140 | }; |
| 141 | |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 142 | struct omap_pipe3 { |
| 143 | void __iomem *pll_ctrl_base; |
Roger Quadros | 80c69c6 | 2019-11-06 16:21:17 +0200 | [diff] [blame] | 144 | void __iomem *phy_rx; |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 145 | void __iomem *power_reg; |
| 146 | void __iomem *pll_reset_reg; |
| 147 | struct pipe3_dpll_map *dpll_map; |
Roger Quadros | cf60864 | 2019-11-06 16:21:16 +0200 | [diff] [blame] | 148 | enum pipe3_mode mode; |
Roger Quadros | 80c69c6 | 2019-11-06 16:21:17 +0200 | [diff] [blame] | 149 | struct pipe3_settings settings; |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 150 | }; |
| 151 | |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 152 | struct pipe3_dpll_params { |
| 153 | u16 m; |
| 154 | u8 n; |
| 155 | u8 freq:3; |
| 156 | u8 sd; |
| 157 | u32 mf; |
| 158 | }; |
| 159 | |
| 160 | struct pipe3_dpll_map { |
| 161 | unsigned long rate; |
| 162 | struct pipe3_dpll_params params; |
| 163 | }; |
| 164 | |
Roger Quadros | cf60864 | 2019-11-06 16:21:16 +0200 | [diff] [blame] | 165 | struct pipe3_data { |
| 166 | enum pipe3_mode mode; |
| 167 | struct pipe3_dpll_map *dpll_map; |
Roger Quadros | 80c69c6 | 2019-11-06 16:21:17 +0200 | [diff] [blame] | 168 | struct pipe3_settings settings; |
Roger Quadros | cf60864 | 2019-11-06 16:21:16 +0200 | [diff] [blame] | 169 | }; |
| 170 | |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 171 | static inline u32 omap_pipe3_readl(void __iomem *addr, unsigned offset) |
| 172 | { |
| 173 | return readl(addr + offset); |
| 174 | } |
| 175 | |
| 176 | static inline void omap_pipe3_writel(void __iomem *addr, unsigned offset, |
| 177 | u32 data) |
| 178 | { |
| 179 | writel(data, addr + offset); |
| 180 | } |
| 181 | |
| 182 | static struct pipe3_dpll_params *omap_pipe3_get_dpll_params(struct omap_pipe3 |
| 183 | *pipe3) |
| 184 | { |
| 185 | u32 rate; |
| 186 | struct pipe3_dpll_map *dpll_map = pipe3->dpll_map; |
| 187 | |
| 188 | rate = get_sys_clk_freq(); |
| 189 | |
| 190 | for (; dpll_map->rate; dpll_map++) { |
| 191 | if (rate == dpll_map->rate) |
| 192 | return &dpll_map->params; |
| 193 | } |
| 194 | |
| 195 | printf("%s: No DPLL configuration for %u Hz SYS CLK\n", |
| 196 | __func__, rate); |
| 197 | return NULL; |
| 198 | } |
| 199 | |
| 200 | static int omap_pipe3_wait_lock(struct omap_pipe3 *pipe3) |
| 201 | { |
| 202 | u32 val; |
| 203 | int timeout = PLL_LOCK_TIME; |
| 204 | |
| 205 | do { |
| 206 | mdelay(1); |
| 207 | val = omap_pipe3_readl(pipe3->pll_ctrl_base, PLL_STATUS); |
| 208 | if (val & PLL_LOCK) |
| 209 | break; |
| 210 | } while (--timeout); |
| 211 | |
| 212 | if (!(val & PLL_LOCK)) { |
| 213 | printf("%s: DPLL failed to lock\n", __func__); |
| 214 | return -EBUSY; |
| 215 | } |
| 216 | |
| 217 | return 0; |
| 218 | } |
| 219 | |
| 220 | static int omap_pipe3_dpll_program(struct omap_pipe3 *pipe3) |
| 221 | { |
| 222 | u32 val; |
| 223 | struct pipe3_dpll_params *dpll_params; |
| 224 | |
| 225 | dpll_params = omap_pipe3_get_dpll_params(pipe3); |
| 226 | if (!dpll_params) { |
| 227 | printf("%s: Invalid DPLL parameters\n", __func__); |
| 228 | return -EINVAL; |
| 229 | } |
| 230 | |
| 231 | val = omap_pipe3_readl(pipe3->pll_ctrl_base, PLL_CONFIGURATION1); |
| 232 | val &= ~PLL_REGN_MASK; |
| 233 | val |= dpll_params->n << PLL_REGN_SHIFT; |
| 234 | omap_pipe3_writel(pipe3->pll_ctrl_base, PLL_CONFIGURATION1, val); |
| 235 | |
| 236 | val = omap_pipe3_readl(pipe3->pll_ctrl_base, PLL_CONFIGURATION2); |
Vignesh R | 5b22df5 | 2018-11-29 10:57:38 +0100 | [diff] [blame] | 237 | val &= ~(PLL_SELFREQDCO_MASK | PLL_IDLE); |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 238 | val |= dpll_params->freq << PLL_SELFREQDCO_SHIFT; |
| 239 | omap_pipe3_writel(pipe3->pll_ctrl_base, PLL_CONFIGURATION2, val); |
| 240 | |
| 241 | val = omap_pipe3_readl(pipe3->pll_ctrl_base, PLL_CONFIGURATION1); |
| 242 | val &= ~PLL_REGM_MASK; |
| 243 | val |= dpll_params->m << PLL_REGM_SHIFT; |
| 244 | omap_pipe3_writel(pipe3->pll_ctrl_base, PLL_CONFIGURATION1, val); |
| 245 | |
| 246 | val = omap_pipe3_readl(pipe3->pll_ctrl_base, PLL_CONFIGURATION4); |
| 247 | val &= ~PLL_REGM_F_MASK; |
| 248 | val |= dpll_params->mf << PLL_REGM_F_SHIFT; |
| 249 | omap_pipe3_writel(pipe3->pll_ctrl_base, PLL_CONFIGURATION4, val); |
| 250 | |
| 251 | val = omap_pipe3_readl(pipe3->pll_ctrl_base, PLL_CONFIGURATION3); |
| 252 | val &= ~PLL_SD_MASK; |
| 253 | val |= dpll_params->sd << PLL_SD_SHIFT; |
| 254 | omap_pipe3_writel(pipe3->pll_ctrl_base, PLL_CONFIGURATION3, val); |
| 255 | |
| 256 | omap_pipe3_writel(pipe3->pll_ctrl_base, PLL_GO, SET_PLL_GO); |
| 257 | |
| 258 | return omap_pipe3_wait_lock(pipe3); |
| 259 | } |
| 260 | |
| 261 | static void omap_control_pipe3_power(struct omap_pipe3 *pipe3, int on) |
| 262 | { |
| 263 | u32 val, rate; |
| 264 | |
| 265 | val = readl(pipe3->power_reg); |
| 266 | |
| 267 | rate = get_sys_clk_freq(); |
| 268 | rate = rate/1000000; |
| 269 | |
| 270 | if (on) { |
Roger Quadros | ed55562 | 2019-11-06 16:21:18 +0200 | [diff] [blame] | 271 | val &= ~(PIPE3_PHY_PWRCTL_CLK_CMD_MASK | |
| 272 | PIPE3_PHY_PWRCTL_CLK_FREQ_MASK); |
| 273 | val |= rate << PIPE3_PHY_PWRCTL_CLK_FREQ_SHIFT; |
| 274 | writel(val, pipe3->power_reg); |
| 275 | |
| 276 | /* Power up TX before RX for SATA & USB */ |
| 277 | val |= PIPE3_PHY_TX_POWERON; |
| 278 | writel(val, pipe3->power_reg); |
| 279 | |
| 280 | val |= PIPE3_PHY_RX_POWERON; |
| 281 | writel(val, pipe3->power_reg); |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 282 | } else { |
Roger Quadros | ed55562 | 2019-11-06 16:21:18 +0200 | [diff] [blame] | 283 | val &= ~PIPE3_PHY_PWRCTL_CLK_CMD_MASK; |
| 284 | writel(val, pipe3->power_reg); |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 285 | } |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 286 | } |
| 287 | |
Roger Quadros | 80c69c6 | 2019-11-06 16:21:17 +0200 | [diff] [blame] | 288 | static void ti_pipe3_calibrate(struct omap_pipe3 *phy) |
| 289 | { |
| 290 | u32 val; |
| 291 | struct pipe3_settings *s = &phy->settings; |
| 292 | |
| 293 | val = omap_pipe3_readl(phy->phy_rx, PIPE3_PHY_RX_ANA_PROGRAMMABILITY); |
| 294 | val &= ~(INTERFACE_MASK | LOSD_MASK | MEM_PLLDIV); |
| 295 | val = (s->ana_interface << INTERFACE_SHIFT | s->ana_losd << LOSD_SHIFT); |
| 296 | omap_pipe3_writel(phy->phy_rx, PIPE3_PHY_RX_ANA_PROGRAMMABILITY, val); |
| 297 | |
| 298 | val = omap_pipe3_readl(phy->phy_rx, PIPE3_PHY_RX_DIGITAL_MODES); |
| 299 | val &= ~(MEM_HS_RATE_MASK | MEM_OVRD_HS_RATE | MEM_CDR_FASTLOCK | |
| 300 | MEM_CDR_LBW_MASK | MEM_CDR_STEPCNT_MASK | MEM_CDR_STL_MASK | |
| 301 | MEM_CDR_THR_MASK | MEM_CDR_THR_MODE | MEM_CDR_2NDO_SDM_MODE); |
| 302 | val |= s->dig_hs_rate << MEM_HS_RATE_SHIFT | |
| 303 | s->dig_ovrd_hs_rate << MEM_OVRD_HS_RATE_SHIFT | |
| 304 | s->dig_fastlock << MEM_CDR_FASTLOCK_SHIFT | |
| 305 | s->dig_lbw << MEM_CDR_LBW_SHIFT | |
| 306 | s->dig_stepcnt << MEM_CDR_STEPCNT_SHIFT | |
| 307 | s->dig_stl << MEM_CDR_STL_SHIFT | |
| 308 | s->dig_thr << MEM_CDR_THR_SHIFT | |
| 309 | s->dig_thr_mode << MEM_CDR_THR_MODE_SHIFT | |
| 310 | s->dig_2ndo_sdm_mode << MEM_CDR_2NDO_SDM_MODE_SHIFT; |
| 311 | omap_pipe3_writel(phy->phy_rx, PIPE3_PHY_RX_DIGITAL_MODES, val); |
| 312 | |
| 313 | val = omap_pipe3_readl(phy->phy_rx, PIPE3_PHY_RX_TRIM); |
| 314 | val &= ~MEM_DLL_TRIM_SEL_MASK; |
| 315 | val |= s->dll_trim_sel << MEM_DLL_TRIM_SHIFT; |
| 316 | omap_pipe3_writel(phy->phy_rx, PIPE3_PHY_RX_TRIM, val); |
| 317 | |
| 318 | val = omap_pipe3_readl(phy->phy_rx, PIPE3_PHY_RX_DLL); |
| 319 | val &= ~MEM_DLL_PHINT_RATE_MASK; |
| 320 | val |= s->dll_phint_rate << MEM_DLL_PHINT_RATE_SHIFT; |
| 321 | omap_pipe3_writel(phy->phy_rx, PIPE3_PHY_RX_DLL, val); |
| 322 | |
| 323 | val = omap_pipe3_readl(phy->phy_rx, PIPE3_PHY_RX_EQUALIZER); |
| 324 | val &= ~(MEM_EQLEV_MASK | MEM_EQFTC_MASK | MEM_EQCTL_MASK | |
| 325 | MEM_OVRD_EQLEV | MEM_OVRD_EQFTC); |
| 326 | val |= s->eq_lev << MEM_EQLEV_SHIFT | |
| 327 | s->eq_ftc << MEM_EQFTC_SHIFT | |
| 328 | s->eq_ctl << MEM_EQCTL_SHIFT | |
| 329 | s->eq_ovrd_lev << MEM_OVRD_EQLEV_SHIFT | |
| 330 | s->eq_ovrd_ftc << MEM_OVRD_EQFTC_SHIFT; |
| 331 | omap_pipe3_writel(phy->phy_rx, PIPE3_PHY_RX_EQUALIZER, val); |
| 332 | |
| 333 | if (phy->mode == PIPE3_MODE_SATA) { |
| 334 | val = omap_pipe3_readl(phy->phy_rx, |
| 335 | SATA_PHY_RX_IO_AND_A2D_OVERRIDES); |
| 336 | val &= ~MEM_CDR_LOS_SOURCE_MASK; |
| 337 | omap_pipe3_writel(phy->phy_rx, SATA_PHY_RX_IO_AND_A2D_OVERRIDES, |
| 338 | val); |
| 339 | } |
| 340 | } |
| 341 | |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 342 | static int pipe3_init(struct phy *phy) |
| 343 | { |
| 344 | int ret; |
| 345 | u32 val; |
| 346 | struct omap_pipe3 *pipe3 = dev_get_priv(phy->dev); |
| 347 | |
| 348 | /* Program the DPLL only if not locked */ |
| 349 | val = omap_pipe3_readl(pipe3->pll_ctrl_base, PLL_STATUS); |
| 350 | if (!(val & PLL_LOCK)) { |
| 351 | ret = omap_pipe3_dpll_program(pipe3); |
| 352 | if (ret) |
| 353 | return ret; |
Roger Quadros | 80c69c6 | 2019-11-06 16:21:17 +0200 | [diff] [blame] | 354 | |
| 355 | ti_pipe3_calibrate(pipe3); |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 356 | } else { |
| 357 | /* else just bring it out of IDLE mode */ |
| 358 | val = omap_pipe3_readl(pipe3->pll_ctrl_base, |
| 359 | PLL_CONFIGURATION2); |
| 360 | if (val & PLL_IDLE) { |
| 361 | val &= ~PLL_IDLE; |
| 362 | omap_pipe3_writel(pipe3->pll_ctrl_base, |
| 363 | PLL_CONFIGURATION2, val); |
| 364 | ret = omap_pipe3_wait_lock(pipe3); |
| 365 | if (ret) |
| 366 | return ret; |
| 367 | } |
| 368 | } |
| 369 | return 0; |
| 370 | } |
| 371 | |
| 372 | static int pipe3_power_on(struct phy *phy) |
| 373 | { |
| 374 | struct omap_pipe3 *pipe3 = dev_get_priv(phy->dev); |
| 375 | |
| 376 | /* Power up the PHY */ |
| 377 | omap_control_pipe3_power(pipe3, 1); |
| 378 | |
| 379 | return 0; |
| 380 | } |
| 381 | |
| 382 | static int pipe3_power_off(struct phy *phy) |
| 383 | { |
| 384 | struct omap_pipe3 *pipe3 = dev_get_priv(phy->dev); |
| 385 | |
| 386 | /* Power down the PHY */ |
| 387 | omap_control_pipe3_power(pipe3, 0); |
| 388 | |
| 389 | return 0; |
| 390 | } |
| 391 | |
| 392 | static int pipe3_exit(struct phy *phy) |
| 393 | { |
| 394 | u32 val; |
| 395 | int timeout = PLL_IDLE_TIME; |
| 396 | struct omap_pipe3 *pipe3 = dev_get_priv(phy->dev); |
| 397 | |
| 398 | pipe3_power_off(phy); |
| 399 | |
| 400 | /* Put DPLL in IDLE mode */ |
| 401 | val = omap_pipe3_readl(pipe3->pll_ctrl_base, PLL_CONFIGURATION2); |
| 402 | val |= PLL_IDLE; |
| 403 | omap_pipe3_writel(pipe3->pll_ctrl_base, PLL_CONFIGURATION2, val); |
| 404 | |
| 405 | /* wait for LDO and Oscillator to power down */ |
| 406 | do { |
| 407 | mdelay(1); |
| 408 | val = omap_pipe3_readl(pipe3->pll_ctrl_base, PLL_STATUS); |
| 409 | if ((val & PLL_TICOPWDN) && (val & PLL_LDOPWDN)) |
| 410 | break; |
| 411 | } while (--timeout); |
| 412 | |
| 413 | if (!(val & PLL_TICOPWDN) || !(val & PLL_LDOPWDN)) { |
Masahiro Yamada | 81e1042 | 2017-09-16 14:10:41 +0900 | [diff] [blame] | 414 | pr_err("%s: Failed to power down DPLL: PLL_STATUS 0x%x\n", |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 415 | __func__, val); |
| 416 | return -EBUSY; |
| 417 | } |
| 418 | |
Vignesh R | 5b22df5 | 2018-11-29 10:57:38 +0100 | [diff] [blame] | 419 | if (pipe3->pll_reset_reg) { |
| 420 | val = readl(pipe3->pll_reset_reg); |
| 421 | writel(val | SATA_PLL_SOFT_RESET, pipe3->pll_reset_reg); |
| 422 | mdelay(1); |
| 423 | writel(val & ~SATA_PLL_SOFT_RESET, pipe3->pll_reset_reg); |
| 424 | } |
| 425 | |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 426 | return 0; |
| 427 | } |
| 428 | |
| 429 | static void *get_reg(struct udevice *dev, const char *name) |
| 430 | { |
| 431 | struct udevice *syscon; |
| 432 | struct regmap *regmap; |
| 433 | const fdt32_t *cell; |
| 434 | int len, err; |
| 435 | void *base; |
| 436 | |
| 437 | err = uclass_get_device_by_phandle(UCLASS_SYSCON, dev, |
| 438 | name, &syscon); |
| 439 | if (err) { |
Masahiro Yamada | 81e1042 | 2017-09-16 14:10:41 +0900 | [diff] [blame] | 440 | pr_err("unable to find syscon device for %s (%d)\n", |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 441 | name, err); |
| 442 | return NULL; |
| 443 | } |
| 444 | |
| 445 | regmap = syscon_get_regmap(syscon); |
| 446 | if (IS_ERR(regmap)) { |
Masahiro Yamada | 81e1042 | 2017-09-16 14:10:41 +0900 | [diff] [blame] | 447 | pr_err("unable to find regmap for %s (%ld)\n", |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 448 | name, PTR_ERR(regmap)); |
| 449 | return NULL; |
| 450 | } |
| 451 | |
Simon Glass | 7a49443 | 2017-05-17 17:18:09 -0600 | [diff] [blame] | 452 | cell = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), name, |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 453 | &len); |
| 454 | if (len < 2*sizeof(fdt32_t)) { |
Masahiro Yamada | 81e1042 | 2017-09-16 14:10:41 +0900 | [diff] [blame] | 455 | pr_err("offset not available for %s\n", name); |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 456 | return NULL; |
| 457 | } |
| 458 | |
| 459 | base = regmap_get_range(regmap, 0); |
| 460 | if (!base) |
| 461 | return NULL; |
| 462 | |
| 463 | return fdtdec_get_number(cell + 1, 1) + base; |
| 464 | } |
| 465 | |
| 466 | static int pipe3_phy_probe(struct udevice *dev) |
| 467 | { |
| 468 | fdt_addr_t addr; |
| 469 | fdt_size_t sz; |
| 470 | struct omap_pipe3 *pipe3 = dev_get_priv(dev); |
Roger Quadros | cf60864 | 2019-11-06 16:21:16 +0200 | [diff] [blame] | 471 | struct pipe3_data *data; |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 472 | |
Roger Quadros | 80c69c6 | 2019-11-06 16:21:17 +0200 | [diff] [blame] | 473 | /* PHY_RX */ |
| 474 | addr = devfdt_get_addr_size_index(dev, 0, &sz); |
| 475 | if (addr == FDT_ADDR_T_NONE) { |
| 476 | pr_err("missing phy_rx address\n"); |
| 477 | return -EINVAL; |
| 478 | } |
| 479 | |
| 480 | pipe3->phy_rx = map_physmem(addr, sz, MAP_NOCACHE); |
| 481 | if (!pipe3->phy_rx) { |
| 482 | pr_err("unable to remap phy_rx\n"); |
| 483 | return -EINVAL; |
| 484 | } |
| 485 | |
| 486 | /* PLLCTRL */ |
Simon Glass | ba1dea4 | 2017-05-17 17:18:05 -0600 | [diff] [blame] | 487 | addr = devfdt_get_addr_size_index(dev, 2, &sz); |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 488 | if (addr == FDT_ADDR_T_NONE) { |
Masahiro Yamada | 81e1042 | 2017-09-16 14:10:41 +0900 | [diff] [blame] | 489 | pr_err("missing pll ctrl address\n"); |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 490 | return -EINVAL; |
| 491 | } |
| 492 | |
| 493 | pipe3->pll_ctrl_base = map_physmem(addr, sz, MAP_NOCACHE); |
| 494 | if (!pipe3->pll_ctrl_base) { |
Masahiro Yamada | 81e1042 | 2017-09-16 14:10:41 +0900 | [diff] [blame] | 495 | pr_err("unable to remap pll ctrl\n"); |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 496 | return -EINVAL; |
| 497 | } |
| 498 | |
| 499 | pipe3->power_reg = get_reg(dev, "syscon-phy-power"); |
| 500 | if (!pipe3->power_reg) |
| 501 | return -EINVAL; |
| 502 | |
Roger Quadros | cf60864 | 2019-11-06 16:21:16 +0200 | [diff] [blame] | 503 | data = (struct pipe3_data *)dev_get_driver_data(dev); |
| 504 | pipe3->mode = data->mode; |
| 505 | pipe3->dpll_map = data->dpll_map; |
Roger Quadros | 80c69c6 | 2019-11-06 16:21:17 +0200 | [diff] [blame] | 506 | pipe3->settings = data->settings; |
Roger Quadros | cf60864 | 2019-11-06 16:21:16 +0200 | [diff] [blame] | 507 | |
| 508 | if (pipe3->mode == PIPE3_MODE_SATA) { |
Vignesh R | 5b22df5 | 2018-11-29 10:57:38 +0100 | [diff] [blame] | 509 | pipe3->pll_reset_reg = get_reg(dev, "syscon-pllreset"); |
| 510 | if (!pipe3->pll_reset_reg) |
| 511 | return -EINVAL; |
| 512 | } |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 513 | |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 514 | return 0; |
| 515 | } |
| 516 | |
| 517 | static struct pipe3_dpll_map dpll_map_sata[] = { |
Roger Quadros | 5015e92 | 2019-11-06 16:21:15 +0200 | [diff] [blame] | 518 | {12000000, {625, 4, 4, 6, 0} }, /* 12 MHz */ |
| 519 | {16800000, {625, 6, 4, 7, 0} }, /* 16.8 MHz */ |
| 520 | {19200000, {625, 7, 4, 6, 0} }, /* 19.2 MHz */ |
| 521 | {20000000, {750, 9, 4, 6, 0} }, /* 20 MHz */ |
| 522 | {26000000, {750, 12, 4, 6, 0} }, /* 26 MHz */ |
| 523 | {38400000, {625, 15, 4, 6, 0} }, /* 38.4 MHz */ |
| 524 | { }, /* Terminator */ |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 525 | }; |
| 526 | |
Vignesh R | 5b22df5 | 2018-11-29 10:57:38 +0100 | [diff] [blame] | 527 | static struct pipe3_dpll_map dpll_map_usb[] = { |
| 528 | {12000000, {1250, 5, 4, 20, 0} }, /* 12 MHz */ |
| 529 | {16800000, {3125, 20, 4, 20, 0} }, /* 16.8 MHz */ |
| 530 | {19200000, {1172, 8, 4, 20, 65537} }, /* 19.2 MHz */ |
| 531 | {20000000, {1000, 7, 4, 10, 0} }, /* 20 MHz */ |
| 532 | {26000000, {1250, 12, 4, 20, 0} }, /* 26 MHz */ |
| 533 | {38400000, {3125, 47, 4, 20, 92843} }, /* 38.4 MHz */ |
| 534 | { }, /* Terminator */ |
| 535 | }; |
| 536 | |
Roger Quadros | cf60864 | 2019-11-06 16:21:16 +0200 | [diff] [blame] | 537 | static struct pipe3_data data_usb = { |
| 538 | .mode = PIPE3_MODE_USBSS, |
| 539 | .dpll_map = dpll_map_usb, |
Roger Quadros | 80c69c6 | 2019-11-06 16:21:17 +0200 | [diff] [blame] | 540 | .settings = { |
| 541 | /* DRA75x TRM Table 26-17. Preferred USB3_PHY_RX SCP Register Settings */ |
| 542 | .ana_interface = INTERFACE_MODE_USBSS, |
| 543 | .ana_losd = 0xa, |
| 544 | .dig_fastlock = 1, |
| 545 | .dig_lbw = 3, |
| 546 | .dig_stepcnt = 0, |
| 547 | .dig_stl = 0x3, |
| 548 | .dig_thr = 1, |
| 549 | .dig_thr_mode = 1, |
| 550 | .dig_2ndo_sdm_mode = 0, |
| 551 | .dig_hs_rate = 0, |
| 552 | .dig_ovrd_hs_rate = 1, |
| 553 | .dll_trim_sel = 0x2, |
| 554 | .dll_phint_rate = 0x3, |
| 555 | .eq_lev = 0, |
| 556 | .eq_ftc = 0, |
| 557 | .eq_ctl = 0x9, |
| 558 | .eq_ovrd_lev = 0, |
| 559 | .eq_ovrd_ftc = 0, |
| 560 | }, |
Roger Quadros | cf60864 | 2019-11-06 16:21:16 +0200 | [diff] [blame] | 561 | }; |
| 562 | |
| 563 | static struct pipe3_data data_sata = { |
| 564 | .mode = PIPE3_MODE_SATA, |
| 565 | .dpll_map = dpll_map_sata, |
Roger Quadros | 80c69c6 | 2019-11-06 16:21:17 +0200 | [diff] [blame] | 566 | .settings = { |
| 567 | /* DRA75x TRM Table 26-9. Preferred SATA_PHY_RX SCP Register Settings */ |
| 568 | .ana_interface = INTERFACE_MODE_SATA_3P0, |
| 569 | .ana_losd = 0x5, |
| 570 | .dig_fastlock = 1, |
| 571 | .dig_lbw = 3, |
| 572 | .dig_stepcnt = 0, |
| 573 | .dig_stl = 0x3, |
| 574 | .dig_thr = 1, |
| 575 | .dig_thr_mode = 1, |
| 576 | .dig_2ndo_sdm_mode = 0, |
| 577 | .dig_hs_rate = 0, /* Not in TRM preferred settings */ |
| 578 | .dig_ovrd_hs_rate = 0, /* Not in TRM preferred settings */ |
| 579 | .dll_trim_sel = 0x1, |
| 580 | .dll_phint_rate = 0x2, /* for 1.5 GHz DPLL clock */ |
| 581 | .eq_lev = 0, |
| 582 | .eq_ftc = 0x1f, |
| 583 | .eq_ctl = 0, |
| 584 | .eq_ovrd_lev = 1, |
| 585 | .eq_ovrd_ftc = 1, |
| 586 | }, |
Roger Quadros | cf60864 | 2019-11-06 16:21:16 +0200 | [diff] [blame] | 587 | }; |
| 588 | |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 589 | static const struct udevice_id pipe3_phy_ids[] = { |
Roger Quadros | cf60864 | 2019-11-06 16:21:16 +0200 | [diff] [blame] | 590 | { .compatible = "ti,phy-pipe3-sata", .data = (ulong)&data_sata }, |
| 591 | { .compatible = "ti,omap-usb3", .data = (ulong)&data_usb}, |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 592 | { } |
| 593 | }; |
| 594 | |
| 595 | static struct phy_ops pipe3_phy_ops = { |
| 596 | .init = pipe3_init, |
| 597 | .power_on = pipe3_power_on, |
| 598 | .power_off = pipe3_power_off, |
| 599 | .exit = pipe3_exit, |
| 600 | }; |
| 601 | |
| 602 | U_BOOT_DRIVER(pipe3_phy) = { |
| 603 | .name = "pipe3_phy", |
| 604 | .id = UCLASS_PHY, |
| 605 | .of_match = pipe3_phy_ids, |
| 606 | .ops = &pipe3_phy_ops, |
| 607 | .probe = pipe3_phy_probe, |
Simon Glass | 8a2b47f | 2020-12-03 16:55:17 -0700 | [diff] [blame] | 608 | .priv_auto = sizeof(struct omap_pipe3), |
Jean-Jacques Hiblot | 73e95eb | 2017-04-24 11:51:29 +0200 | [diff] [blame] | 609 | }; |