dsi_pll_4nm.c 47 KB

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  1. // SPDX-License-Identifier: GPL-2.0-only
  2. /*
  3. * Copyright (c) 2016-2021, The Linux Foundation. All rights reserved.
  4. * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
  5. */
  6. #include <linux/kernel.h>
  7. #include <linux/err.h>
  8. #include <linux/iopoll.h>
  9. #include <linux/delay.h>
  10. #include <linux/of.h>
  11. #include <linux/platform_device.h>
  12. #include "dsi_pll_4nm.h"
  13. #define VCO_DELAY_USEC 1
  14. #define MHZ_250 250000000UL
  15. #define MHZ_500 500000000UL
  16. #define MHZ_1000 1000000000UL
  17. #define MHZ_1100 1100000000UL
  18. #define MHZ_1900 1900000000UL
  19. #define MHZ_3000 3000000000UL
  20. struct dsi_pll_regs {
  21. u32 pll_prop_gain_rate;
  22. u32 pll_lockdet_rate;
  23. u32 decimal_div_start;
  24. u32 frac_div_start_low;
  25. u32 frac_div_start_mid;
  26. u32 frac_div_start_high;
  27. u32 pll_clock_inverters;
  28. u32 ssc_stepsize_low;
  29. u32 ssc_stepsize_high;
  30. u32 ssc_div_per_low;
  31. u32 ssc_div_per_high;
  32. u32 ssc_adjper_low;
  33. u32 ssc_adjper_high;
  34. u32 ssc_control;
  35. };
  36. struct dsi_pll_config {
  37. u32 ref_freq;
  38. bool div_override;
  39. u32 output_div;
  40. bool ignore_frac;
  41. bool disable_prescaler;
  42. bool enable_ssc;
  43. bool ssc_center;
  44. u32 dec_bits;
  45. u32 frac_bits;
  46. u32 lock_timer;
  47. u32 ssc_freq;
  48. u32 ssc_offset;
  49. u32 ssc_adj_per;
  50. u32 thresh_cycles;
  51. u32 refclk_cycles;
  52. };
  53. struct dsi_pll_4nm {
  54. struct dsi_pll_resource *rsc;
  55. struct dsi_pll_config pll_configuration;
  56. struct dsi_pll_regs reg_setup;
  57. bool cphy_enabled;
  58. };
  59. static inline bool dsi_pll_4nm_is_hw_revision(struct dsi_pll_resource *rsc)
  60. {
  61. return (rsc->pll_revision == DSI_PLL_4NM) ? true : false;
  62. }
  63. static inline void dsi_pll_set_pll_post_div(struct dsi_pll_resource *pll, u32 pll_post_div)
  64. {
  65. u32 pll_post_div_val = 0;
  66. if (pll_post_div == 1)
  67. pll_post_div_val = 0;
  68. if (pll_post_div == 2)
  69. pll_post_div_val = 1;
  70. if (pll_post_div == 4)
  71. pll_post_div_val = 2;
  72. if (pll_post_div == 8)
  73. pll_post_div_val = 3;
  74. DSI_PLL_REG_W(pll->pll_base, PLL_PLL_OUTDIV_RATE, pll_post_div_val);
  75. if (pll->slave)
  76. DSI_PLL_REG_W(pll->slave->pll_base, PLL_PLL_OUTDIV_RATE, pll_post_div_val);
  77. }
  78. static inline int dsi_pll_get_pll_post_div(struct dsi_pll_resource *pll)
  79. {
  80. u32 reg_val;
  81. reg_val = DSI_PLL_REG_R(pll->pll_base, PLL_PLL_OUTDIV_RATE);
  82. return (1 << reg_val);
  83. }
  84. static inline void dsi_pll_set_phy_post_div(struct dsi_pll_resource *pll, u32 phy_post_div)
  85. {
  86. u32 reg_val = 0;
  87. reg_val = DSI_PLL_REG_R(pll->phy_base, PHY_CMN_CLK_CFG0);
  88. reg_val &= ~0x0F;
  89. reg_val |= phy_post_div;
  90. DSI_PLL_REG_W(pll->phy_base, PHY_CMN_CLK_CFG0, reg_val);
  91. /* For slave PLL, this divider always should be set to 1 */
  92. if (pll->slave) {
  93. reg_val = DSI_PLL_REG_R(pll->phy_base, PHY_CMN_CLK_CFG0);
  94. reg_val &= ~0x0F;
  95. reg_val |= 0x1;
  96. DSI_PLL_REG_W(pll->slave->phy_base, PHY_CMN_CLK_CFG0, reg_val);
  97. }
  98. }
  99. static inline int dsi_pll_get_phy_post_div(struct dsi_pll_resource *pll)
  100. {
  101. u32 reg_val = 0;
  102. reg_val = DSI_PLL_REG_R(pll->phy_base, PHY_CMN_CLK_CFG0);
  103. return (reg_val & 0xF);
  104. }
  105. static inline void dsi_pll_set_dsi_clk(struct dsi_pll_resource *pll, u32 dsi_clk)
  106. {
  107. u32 reg_val = 0;
  108. reg_val = DSI_PLL_REG_R(pll->phy_base, PHY_CMN_CLK_CFG1);
  109. reg_val &= ~0x3;
  110. reg_val |= dsi_clk;
  111. DSI_PLL_REG_W(pll->phy_base, PHY_CMN_CLK_CFG1, reg_val);
  112. if (pll->slave) {
  113. reg_val = DSI_PLL_REG_R(pll->slave->phy_base, PHY_CMN_CLK_CFG1);
  114. reg_val &= ~0x3;
  115. reg_val |= dsi_clk;
  116. DSI_PLL_REG_W(pll->slave->phy_base, PHY_CMN_CLK_CFG1, reg_val);
  117. }
  118. }
  119. static inline int dsi_pll_get_dsi_clk(struct dsi_pll_resource *pll)
  120. {
  121. u32 reg_val;
  122. reg_val = DSI_PLL_REG_R(pll->phy_base, PHY_CMN_CLK_CFG1);
  123. return (reg_val & 0x3);
  124. }
  125. static inline void dsi_pll_set_pclk_div(struct dsi_pll_resource *pll, u32 pclk_div)
  126. {
  127. u32 reg_val = 0;
  128. reg_val = DSI_PLL_REG_R(pll->phy_base, PHY_CMN_CLK_CFG0);
  129. reg_val &= ~0xF0;
  130. reg_val |= (pclk_div << 4);
  131. DSI_PLL_REG_W(pll->phy_base, PHY_CMN_CLK_CFG0, reg_val);
  132. if (pll->slave) {
  133. reg_val = DSI_PLL_REG_R(pll->slave->phy_base, PHY_CMN_CLK_CFG0);
  134. reg_val &= ~0xF0;
  135. reg_val |= (pclk_div << 4);
  136. DSI_PLL_REG_W(pll->slave->phy_base, PHY_CMN_CLK_CFG0, reg_val);
  137. }
  138. }
  139. static inline int dsi_pll_get_pclk_div(struct dsi_pll_resource *pll)
  140. {
  141. u32 reg_val;
  142. reg_val = DSI_PLL_REG_R(pll->phy_base, PHY_CMN_CLK_CFG0);
  143. return ((reg_val & 0xF0) >> 4);
  144. }
  145. static struct dsi_pll_resource *pll_rsc_db[DSI_PLL_MAX];
  146. static struct dsi_pll_4nm plls[DSI_PLL_MAX];
  147. static void dsi_pll_config_slave(struct dsi_pll_resource *rsc)
  148. {
  149. u32 reg;
  150. struct dsi_pll_resource *orsc = pll_rsc_db[DSI_PLL_1];
  151. if (!rsc)
  152. return;
  153. /* Only DSI PLL0 can act as a master */
  154. if (rsc->index != DSI_PLL_0)
  155. return;
  156. /* default configuration: source is either internal or ref clock */
  157. rsc->slave = NULL;
  158. if (!orsc) {
  159. DSI_PLL_WARN(rsc, "slave PLL unavilable, assuming standalone config\n");
  160. return;
  161. }
  162. /* check to see if the source of DSI1 PLL bitclk is set to external */
  163. reg = DSI_PLL_REG_R(orsc->phy_base, PHY_CMN_CLK_CFG1);
  164. reg &= (BIT(2) | BIT(3));
  165. if (reg == 0x04)
  166. rsc->slave = pll_rsc_db[DSI_PLL_1]; /* external source */
  167. DSI_PLL_DBG(rsc, "Slave PLL %s\n",
  168. rsc->slave ? "configured" : "absent");
  169. }
  170. static void dsi_pll_setup_config(struct dsi_pll_4nm *pll, struct dsi_pll_resource *rsc)
  171. {
  172. struct dsi_pll_config *config = &pll->pll_configuration;
  173. config->ref_freq = 19200000;
  174. config->output_div = 1;
  175. config->dec_bits = 8;
  176. config->frac_bits = 18;
  177. config->lock_timer = 64;
  178. config->ssc_freq = 31500;
  179. config->ssc_offset = 4800;
  180. config->ssc_adj_per = 2;
  181. config->thresh_cycles = 32;
  182. config->refclk_cycles = 256;
  183. config->div_override = false;
  184. config->ignore_frac = false;
  185. config->disable_prescaler = false;
  186. config->enable_ssc = rsc->ssc_en;
  187. config->ssc_center = rsc->ssc_center;
  188. if (config->enable_ssc) {
  189. if (rsc->ssc_freq)
  190. config->ssc_freq = rsc->ssc_freq;
  191. if (rsc->ssc_ppm)
  192. config->ssc_offset = rsc->ssc_ppm;
  193. }
  194. }
  195. static void dsi_pll_calc_dec_frac(struct dsi_pll_4nm *pll, struct dsi_pll_resource *rsc)
  196. {
  197. struct dsi_pll_config *config = &pll->pll_configuration;
  198. struct dsi_pll_regs *regs = &pll->reg_setup;
  199. u64 fref = rsc->vco_ref_clk_rate;
  200. u64 pll_freq;
  201. u64 divider;
  202. u64 dec, dec_multiple;
  203. u32 frac;
  204. u64 multiplier;
  205. pll_freq = rsc->vco_current_rate;
  206. if (config->disable_prescaler)
  207. divider = fref;
  208. else
  209. divider = fref * 2;
  210. multiplier = 1 << config->frac_bits;
  211. dec_multiple = div_u64(pll_freq * multiplier, divider);
  212. div_u64_rem(dec_multiple, multiplier, &frac);
  213. dec = div_u64(dec_multiple, multiplier);
  214. if (pll_freq <= 1300000000ULL)
  215. regs->pll_clock_inverters = 0xA0;
  216. else if (pll_freq <= 2500000000ULL)
  217. regs->pll_clock_inverters = 0x20;
  218. else if (pll_freq <= 4000000000ULL)
  219. regs->pll_clock_inverters = 0x00;
  220. else
  221. regs->pll_clock_inverters = 0x40;
  222. regs->pll_lockdet_rate = config->lock_timer;
  223. regs->decimal_div_start = dec;
  224. regs->frac_div_start_low = (frac & 0xff);
  225. regs->frac_div_start_mid = (frac & 0xff00) >> 8;
  226. regs->frac_div_start_high = (frac & 0x30000) >> 16;
  227. regs->pll_prop_gain_rate = 10;
  228. }
  229. static void dsi_pll_calc_ssc(struct dsi_pll_4nm *pll, struct dsi_pll_resource *rsc)
  230. {
  231. struct dsi_pll_config *config = &pll->pll_configuration;
  232. struct dsi_pll_regs *regs = &pll->reg_setup;
  233. u32 ssc_per;
  234. u32 ssc_mod;
  235. u64 ssc_step_size;
  236. u64 frac;
  237. if (!config->enable_ssc) {
  238. DSI_PLL_DBG(rsc, "SSC not enabled\n");
  239. return;
  240. }
  241. ssc_per = DIV_ROUND_CLOSEST(config->ref_freq, config->ssc_freq) / 2 - 1;
  242. ssc_mod = (ssc_per + 1) % (config->ssc_adj_per + 1);
  243. ssc_per -= ssc_mod;
  244. frac = regs->frac_div_start_low | (regs->frac_div_start_mid << 8) |
  245. (regs->frac_div_start_high << 16);
  246. ssc_step_size = regs->decimal_div_start;
  247. ssc_step_size *= (1 << config->frac_bits);
  248. ssc_step_size += frac;
  249. ssc_step_size *= config->ssc_offset;
  250. ssc_step_size *= (config->ssc_adj_per + 1);
  251. ssc_step_size = div_u64(ssc_step_size, (ssc_per + 1));
  252. ssc_step_size = DIV_ROUND_CLOSEST_ULL(ssc_step_size, 1000000);
  253. regs->ssc_div_per_low = ssc_per & 0xFF;
  254. regs->ssc_div_per_high = (ssc_per & 0xFF00) >> 8;
  255. regs->ssc_stepsize_low = (u32)(ssc_step_size & 0xFF);
  256. regs->ssc_stepsize_high = (u32)((ssc_step_size & 0xFF00) >> 8);
  257. regs->ssc_adjper_low = config->ssc_adj_per & 0xFF;
  258. regs->ssc_adjper_high = (config->ssc_adj_per & 0xFF00) >> 8;
  259. regs->ssc_control = config->ssc_center ? SSC_CENTER : 0;
  260. DSI_PLL_DBG(rsc, "SCC: Dec:%d, frac:%llu, frac_bits:%d\n", regs->decimal_div_start, frac,
  261. config->frac_bits);
  262. DSI_PLL_DBG(rsc, "SSC: div_per:0x%X, stepsize:0x%X, adjper:0x%X\n", ssc_per,
  263. (u32)ssc_step_size, config->ssc_adj_per);
  264. }
  265. static void dsi_pll_ssc_commit(struct dsi_pll_4nm *pll, struct dsi_pll_resource *rsc)
  266. {
  267. void __iomem *pll_base = rsc->pll_base;
  268. struct dsi_pll_regs *regs = &pll->reg_setup;
  269. if (pll->pll_configuration.enable_ssc) {
  270. DSI_PLL_DBG(rsc, "SSC is enabled\n");
  271. DSI_PLL_REG_W(pll_base, PLL_SSC_STEPSIZE_LOW_1, regs->ssc_stepsize_low);
  272. DSI_PLL_REG_W(pll_base, PLL_SSC_STEPSIZE_HIGH_1, regs->ssc_stepsize_high);
  273. DSI_PLL_REG_W(pll_base, PLL_SSC_DIV_PER_LOW_1, regs->ssc_div_per_low);
  274. DSI_PLL_REG_W(pll_base, PLL_SSC_DIV_PER_HIGH_1, regs->ssc_div_per_high);
  275. DSI_PLL_REG_W(pll_base, PLL_SSC_ADJPER_LOW_1, regs->ssc_adjper_low);
  276. DSI_PLL_REG_W(pll_base, PLL_SSC_ADJPER_HIGH_1, regs->ssc_adjper_high);
  277. DSI_PLL_REG_W(pll_base, PLL_SSC_CONTROL, SSC_EN | regs->ssc_control);
  278. }
  279. }
  280. static void dsi_pll_config_hzindep_reg(struct dsi_pll_4nm *pll, struct dsi_pll_resource *rsc)
  281. {
  282. void __iomem *pll_base = rsc->pll_base;
  283. u64 vco_rate = rsc->vco_current_rate;
  284. if (vco_rate < 3100000000ULL)
  285. DSI_PLL_REG_W(pll_base,
  286. PLL_ANALOG_CONTROLS_FIVE_1, 0x01);
  287. else
  288. DSI_PLL_REG_W(pll_base,
  289. PLL_ANALOG_CONTROLS_FIVE_1, 0x03);
  290. if (vco_rate < 1557000000ULL)
  291. DSI_PLL_REG_W(pll_base, PLL_VCO_CONFIG_1, 0x08);
  292. else
  293. DSI_PLL_REG_W(pll_base, PLL_VCO_CONFIG_1, 0x01);
  294. DSI_PLL_REG_W(pll_base, PLL_ANALOG_CONTROLS_FIVE, 0x01);
  295. DSI_PLL_REG_W(pll_base, PLL_ANALOG_CONTROLS_TWO, 0x03);
  296. DSI_PLL_REG_W(pll_base, PLL_ANALOG_CONTROLS_THREE, 0x00);
  297. DSI_PLL_REG_W(pll_base, PLL_DSM_DIVIDER, 0x00);
  298. DSI_PLL_REG_W(pll_base, PLL_FEEDBACK_DIVIDER, 0x4e);
  299. DSI_PLL_REG_W(pll_base, PLL_CALIBRATION_SETTINGS, 0x40);
  300. DSI_PLL_REG_W(pll_base, PLL_BAND_SEL_CAL_SETTINGS_THREE, 0xba);
  301. DSI_PLL_REG_W(pll_base, PLL_FREQ_DETECT_SETTINGS_ONE, 0x0c);
  302. DSI_PLL_REG_W(pll_base, PLL_OUTDIV, 0x00);
  303. DSI_PLL_REG_W(pll_base, PLL_CORE_OVERRIDE, 0x00);
  304. DSI_PLL_REG_W(pll_base, PLL_PLL_DIGITAL_TIMERS_TWO, 0x08);
  305. DSI_PLL_REG_W(pll_base, PLL_PLL_PROP_GAIN_RATE_1, 0x0a);
  306. DSI_PLL_REG_W(pll_base, PLL_PLL_BAND_SEL_RATE_1, 0xc0);
  307. DSI_PLL_REG_W(pll_base, PLL_PLL_INT_GAIN_IFILT_BAND_1, 0x84);
  308. DSI_PLL_REG_W(pll_base, PLL_PLL_INT_GAIN_IFILT_BAND_1, 0x82);
  309. DSI_PLL_REG_W(pll_base, PLL_PLL_FL_INT_GAIN_PFILT_BAND_1, 0x4c);
  310. DSI_PLL_REG_W(pll_base, PLL_PLL_LOCK_OVERRIDE, 0x80);
  311. DSI_PLL_REG_W(pll_base, PLL_PFILT, 0x29);
  312. DSI_PLL_REG_W(pll_base, PLL_PFILT, 0x2f);
  313. DSI_PLL_REG_W(pll_base, PLL_IFILT, 0x2a);
  314. DSI_PLL_REG_W(pll_base, PLL_IFILT, 0x3F);
  315. DSI_PLL_REG_W(pll_base, PLL_PERF_OPTIMIZE, 0x22);
  316. if (rsc->slave)
  317. DSI_PLL_REG_W(rsc->slave->pll_base, PLL_PERF_OPTIMIZE, 0x22);
  318. }
  319. static void dsi_pll_init_val(struct dsi_pll_resource *rsc)
  320. {
  321. void __iomem *pll_base = rsc->pll_base;
  322. DSI_PLL_REG_W(pll_base, PLL_ANALOG_CONTROLS_ONE, 0x00000000);
  323. DSI_PLL_REG_W(pll_base, PLL_INT_LOOP_SETTINGS, 0x0000003F);
  324. DSI_PLL_REG_W(pll_base, PLL_INT_LOOP_SETTINGS_TWO, 0x00000000);
  325. DSI_PLL_REG_W(pll_base, PLL_ANALOG_CONTROLS_FOUR, 0x00000000);
  326. DSI_PLL_REG_W(pll_base, PLL_INT_LOOP_CONTROLS, 0x00000080);
  327. DSI_PLL_REG_W(pll_base, PLL_SYSTEM_MUXES, 0x00000000);
  328. DSI_PLL_REG_W(pll_base, PLL_FREQ_UPDATE_CONTROL_OVERRIDES, 0x00000000);
  329. DSI_PLL_REG_W(pll_base, PLL_CMODE, 0x00000010);
  330. DSI_PLL_REG_W(pll_base, PLL_PSM_CTRL, 0x00000020);
  331. DSI_PLL_REG_W(pll_base, PLL_RSM_CTRL, 0x00000010);
  332. DSI_PLL_REG_W(pll_base, PLL_VCO_TUNE_MAP, 0x00000002);
  333. DSI_PLL_REG_W(pll_base, PLL_PLL_CNTRL, 0x0000001C);
  334. DSI_PLL_REG_W(pll_base, PLL_BAND_SEL_CAL_TIMER_LOW, 0x00000000);
  335. DSI_PLL_REG_W(pll_base, PLL_BAND_SEL_CAL_TIMER_HIGH, 0x00000002);
  336. DSI_PLL_REG_W(pll_base, PLL_BAND_SEL_CAL_SETTINGS, 0x00000020);
  337. DSI_PLL_REG_W(pll_base, PLL_BAND_SEL_MIN, 0x00000000);
  338. DSI_PLL_REG_W(pll_base, PLL_BAND_SEL_MAX, 0x000000FF);
  339. DSI_PLL_REG_W(pll_base, PLL_BAND_SEL_PFILT, 0x00000000);
  340. DSI_PLL_REG_W(pll_base, PLL_BAND_SEL_IFILT, 0x0000000A);
  341. DSI_PLL_REG_W(pll_base, PLL_BAND_SEL_CAL_SETTINGS_TWO, 0x00000025);
  342. DSI_PLL_REG_W(pll_base, PLL_BAND_SEL_CAL_SETTINGS_THREE, 0x000000BA);
  343. DSI_PLL_REG_W(pll_base, PLL_BAND_SEL_CAL_SETTINGS_FOUR, 0x0000004F);
  344. DSI_PLL_REG_W(pll_base, PLL_BAND_SEL_ICODE_HIGH, 0x0000000A);
  345. DSI_PLL_REG_W(pll_base, PLL_BAND_SEL_ICODE_LOW, 0x00000000);
  346. DSI_PLL_REG_W(pll_base, PLL_FREQ_DETECT_SETTINGS_ONE, 0x0000000C);
  347. DSI_PLL_REG_W(pll_base, PLL_FREQ_DETECT_THRESH, 0x00000020);
  348. DSI_PLL_REG_W(pll_base, PLL_FREQ_DET_REFCLK_HIGH, 0x00000000);
  349. DSI_PLL_REG_W(pll_base, PLL_FREQ_DET_REFCLK_LOW, 0x000000FF);
  350. DSI_PLL_REG_W(pll_base, PLL_FREQ_DET_PLLCLK_HIGH, 0x00000010);
  351. DSI_PLL_REG_W(pll_base, PLL_FREQ_DET_PLLCLK_LOW, 0x00000046);
  352. DSI_PLL_REG_W(pll_base, PLL_PLL_GAIN, 0x00000054);
  353. DSI_PLL_REG_W(pll_base, PLL_ICODE_LOW, 0x00000000);
  354. DSI_PLL_REG_W(pll_base, PLL_ICODE_HIGH, 0x00000000);
  355. DSI_PLL_REG_W(pll_base, PLL_LOCKDET, 0x00000040);
  356. DSI_PLL_REG_W(pll_base, PLL_FASTLOCK_CONTROL, 0x00000004);
  357. DSI_PLL_REG_W(pll_base, PLL_PASS_OUT_OVERRIDE_ONE, 0x00000000);
  358. DSI_PLL_REG_W(pll_base, PLL_PASS_OUT_OVERRIDE_TWO, 0x00000000);
  359. DSI_PLL_REG_W(pll_base, PLL_CORE_OVERRIDE, 0x00000000);
  360. DSI_PLL_REG_W(pll_base, PLL_CORE_INPUT_OVERRIDE, 0x00000010);
  361. DSI_PLL_REG_W(pll_base, PLL_RATE_CHANGE, 0x00000000);
  362. DSI_PLL_REG_W(pll_base, PLL_PLL_DIGITAL_TIMERS, 0x00000008);
  363. DSI_PLL_REG_W(pll_base, PLL_PLL_DIGITAL_TIMERS_TWO, 0x00000008);
  364. DSI_PLL_REG_W(pll_base, PLL_DEC_FRAC_MUXES, 0x00000000);
  365. DSI_PLL_REG_W(pll_base, PLL_MASH_CONTROL, 0x00000003);
  366. DSI_PLL_REG_W(pll_base, PLL_SSC_STEPSIZE_LOW, 0x00000000);
  367. DSI_PLL_REG_W(pll_base, PLL_SSC_STEPSIZE_HIGH, 0x00000000);
  368. DSI_PLL_REG_W(pll_base, PLL_SSC_DIV_PER_LOW, 0x00000000);
  369. DSI_PLL_REG_W(pll_base, PLL_SSC_DIV_PER_HIGH, 0x00000000);
  370. DSI_PLL_REG_W(pll_base, PLL_SSC_ADJPER_LOW, 0x00000000);
  371. DSI_PLL_REG_W(pll_base, PLL_SSC_ADJPER_HIGH, 0x00000000);
  372. DSI_PLL_REG_W(pll_base, PLL_SSC_MUX_CONTROL, 0x00000000);
  373. DSI_PLL_REG_W(pll_base, PLL_SSC_STEPSIZE_LOW_1, 0x00000000);
  374. DSI_PLL_REG_W(pll_base, PLL_SSC_STEPSIZE_HIGH_1, 0x00000000);
  375. DSI_PLL_REG_W(pll_base, PLL_SSC_DIV_PER_LOW_1, 0x00000000);
  376. DSI_PLL_REG_W(pll_base, PLL_SSC_DIV_PER_HIGH_1, 0x00000000);
  377. DSI_PLL_REG_W(pll_base, PLL_SSC_ADJPER_LOW_1, 0x00000000);
  378. DSI_PLL_REG_W(pll_base, PLL_SSC_ADJPER_HIGH_1, 0x00000000);
  379. DSI_PLL_REG_W(pll_base, PLL_SSC_STEPSIZE_LOW_2, 0x00000000);
  380. DSI_PLL_REG_W(pll_base, PLL_SSC_STEPSIZE_HIGH_2, 0x00000000);
  381. DSI_PLL_REG_W(pll_base, PLL_SSC_DIV_PER_LOW_2, 0x00000000);
  382. DSI_PLL_REG_W(pll_base, PLL_SSC_DIV_PER_HIGH_2, 0x00000000);
  383. DSI_PLL_REG_W(pll_base, PLL_SSC_ADJPER_LOW_2, 0x00000000);
  384. DSI_PLL_REG_W(pll_base, PLL_SSC_ADJPER_HIGH_2, 0x00000000);
  385. DSI_PLL_REG_W(pll_base, PLL_SSC_CONTROL, 0x00000000);
  386. DSI_PLL_REG_W(pll_base, PLL_PLL_OUTDIV_RATE, 0x00000000);
  387. DSI_PLL_REG_W(pll_base, PLL_PLL_LOCKDET_RATE_1, 0x00000040);
  388. DSI_PLL_REG_W(pll_base, PLL_PLL_LOCKDET_RATE_2, 0x00000040);
  389. DSI_PLL_REG_W(pll_base, PLL_PLL_PROP_GAIN_RATE_1, 0x0000000C);
  390. DSI_PLL_REG_W(pll_base, PLL_PLL_PROP_GAIN_RATE_2, 0x0000000A);
  391. DSI_PLL_REG_W(pll_base, PLL_PLL_BAND_SEL_RATE_1, 0x000000C0);
  392. DSI_PLL_REG_W(pll_base, PLL_PLL_BAND_SEL_RATE_2, 0x00000000);
  393. DSI_PLL_REG_W(pll_base, PLL_PLL_INT_GAIN_IFILT_BAND_1, 0x00000054);
  394. DSI_PLL_REG_W(pll_base, PLL_PLL_INT_GAIN_IFILT_BAND_2, 0x00000054);
  395. DSI_PLL_REG_W(pll_base, PLL_PLL_FL_INT_GAIN_PFILT_BAND_1, 0x0000004C);
  396. DSI_PLL_REG_W(pll_base, PLL_PLL_FL_INT_GAIN_PFILT_BAND_2, 0x0000004C);
  397. DSI_PLL_REG_W(pll_base, PLL_PLL_FASTLOCK_EN_BAND, 0x00000003);
  398. DSI_PLL_REG_W(pll_base, PLL_FREQ_TUNE_ACCUM_INIT_MID, 0x00000000);
  399. DSI_PLL_REG_W(pll_base, PLL_FREQ_TUNE_ACCUM_INIT_HIGH, 0x00000000);
  400. DSI_PLL_REG_W(pll_base, PLL_FREQ_TUNE_ACCUM_INIT_MUX, 0x00000000);
  401. DSI_PLL_REG_W(pll_base, PLL_PLL_LOCK_OVERRIDE, 0x00000080);
  402. DSI_PLL_REG_W(pll_base, PLL_PLL_LOCK_DELAY, 0x00000006);
  403. DSI_PLL_REG_W(pll_base, PLL_PLL_LOCK_MIN_DELAY, 0x00000019);
  404. DSI_PLL_REG_W(pll_base, PLL_CLOCK_INVERTERS, 0x00000000);
  405. DSI_PLL_REG_W(pll_base, PLL_SPARE_AND_JPC_OVERRIDES, 0x00000000);
  406. DSI_PLL_REG_W(pll_base, PLL_BIAS_CONTROL_1, 0x00000040);
  407. DSI_PLL_REG_W(pll_base, PLL_BIAS_CONTROL_2, 0x00000020);
  408. DSI_PLL_REG_W(pll_base, PLL_ALOG_OBSV_BUS_CTRL_1, 0x00000000);
  409. DSI_PLL_REG_W(pll_base, PLL_COMMON_STATUS_ONE, 0x00000000);
  410. DSI_PLL_REG_W(pll_base, PLL_COMMON_STATUS_TWO, 0x00000000);
  411. DSI_PLL_REG_W(pll_base, PLL_BAND_SEL_CAL, 0x00000000);
  412. DSI_PLL_REG_W(pll_base, PLL_ICODE_ACCUM_STATUS_LOW, 0x00000000);
  413. DSI_PLL_REG_W(pll_base, PLL_ICODE_ACCUM_STATUS_HIGH, 0x00000000);
  414. DSI_PLL_REG_W(pll_base, PLL_FD_OUT_LOW, 0x00000000);
  415. DSI_PLL_REG_W(pll_base, PLL_FD_OUT_HIGH, 0x00000000);
  416. DSI_PLL_REG_W(pll_base, PLL_ALOG_OBSV_BUS_STATUS_1, 0x00000000);
  417. DSI_PLL_REG_W(pll_base, PLL_PLL_MISC_CONFIG, 0x00000000);
  418. DSI_PLL_REG_W(pll_base, PLL_FLL_CONFIG, 0x00000002);
  419. DSI_PLL_REG_W(pll_base, PLL_FLL_FREQ_ACQ_TIME, 0x00000011);
  420. DSI_PLL_REG_W(pll_base, PLL_FLL_CODE0, 0x00000000);
  421. DSI_PLL_REG_W(pll_base, PLL_FLL_CODE1, 0x00000000);
  422. DSI_PLL_REG_W(pll_base, PLL_FLL_GAIN0, 0x00000080);
  423. DSI_PLL_REG_W(pll_base, PLL_FLL_GAIN1, 0x00000000);
  424. DSI_PLL_REG_W(pll_base, PLL_SW_RESET, 0x00000000);
  425. DSI_PLL_REG_W(pll_base, PLL_FAST_PWRUP, 0x00000000);
  426. DSI_PLL_REG_W(pll_base, PLL_LOCKTIME0, 0x00000000);
  427. DSI_PLL_REG_W(pll_base, PLL_LOCKTIME1, 0x00000000);
  428. DSI_PLL_REG_W(pll_base, PLL_DEBUG_BUS_SEL, 0x00000000);
  429. DSI_PLL_REG_W(pll_base, PLL_DEBUG_BUS0, 0x00000000);
  430. DSI_PLL_REG_W(pll_base, PLL_DEBUG_BUS1, 0x00000000);
  431. DSI_PLL_REG_W(pll_base, PLL_DEBUG_BUS2, 0x00000000);
  432. DSI_PLL_REG_W(pll_base, PLL_DEBUG_BUS3, 0x00000000);
  433. DSI_PLL_REG_W(pll_base, PLL_ANALOG_FLL_CONTROL_OVERRIDES, 0x00000000);
  434. DSI_PLL_REG_W(pll_base, PLL_VCO_CONFIG, 0x00000000);
  435. DSI_PLL_REG_W(pll_base, PLL_VCO_CAL_CODE1_MODE0_STATUS, 0x00000000);
  436. DSI_PLL_REG_W(pll_base, PLL_VCO_CAL_CODE1_MODE1_STATUS, 0x00000000);
  437. DSI_PLL_REG_W(pll_base, PLL_RESET_SM_STATUS, 0x00000000);
  438. DSI_PLL_REG_W(pll_base, PLL_TDC_OFFSET, 0x00000000);
  439. DSI_PLL_REG_W(pll_base, PLL_PS3_PWRDOWN_CONTROLS, 0x0000001D);
  440. DSI_PLL_REG_W(pll_base, PLL_PS4_PWRDOWN_CONTROLS, 0x0000001C);
  441. DSI_PLL_REG_W(pll_base, PLL_PLL_RST_CONTROLS, 0x000000FF);
  442. DSI_PLL_REG_W(pll_base, PLL_GEAR_BAND_SELECT_CONTROLS, 0x00000022);
  443. DSI_PLL_REG_W(pll_base, PLL_PSM_CLK_CONTROLS, 0x00000009);
  444. DSI_PLL_REG_W(pll_base, PLL_SYSTEM_MUXES_2, 0x00000000);
  445. DSI_PLL_REG_W(pll_base, PLL_VCO_CONFIG_1, 0x00000000);
  446. DSI_PLL_REG_W(pll_base, PLL_VCO_CONFIG_2, 0x00000000);
  447. DSI_PLL_REG_W(pll_base, PLL_CLOCK_INVERTERS_1, 0x00000040);
  448. DSI_PLL_REG_W(pll_base, PLL_CLOCK_INVERTERS_2, 0x00000000);
  449. DSI_PLL_REG_W(pll_base, PLL_CMODE_1, 0x00000010);
  450. DSI_PLL_REG_W(pll_base, PLL_CMODE_2, 0x00000010);
  451. DSI_PLL_REG_W(pll_base, PLL_ANALOG_CONTROLS_FIVE_2, 0x00000003);
  452. }
  453. static void dsi_pll_detect_phy_mode(struct dsi_pll_4nm *pll, struct dsi_pll_resource *rsc)
  454. {
  455. u32 reg_val;
  456. reg_val = DSI_PLL_REG_R(rsc->phy_base, PHY_CMN_GLBL_CTRL);
  457. pll->cphy_enabled = (reg_val & BIT(6)) ? true : false;
  458. }
  459. static void dsi_pll_commit(struct dsi_pll_4nm *pll, struct dsi_pll_resource *rsc)
  460. {
  461. void __iomem *pll_base = rsc->pll_base;
  462. struct dsi_pll_regs *reg = &pll->reg_setup;
  463. DSI_PLL_REG_W(pll_base, PLL_CORE_INPUT_OVERRIDE, 0x12);
  464. DSI_PLL_REG_W(pll_base, PLL_DECIMAL_DIV_START_1, reg->decimal_div_start);
  465. DSI_PLL_REG_W(pll_base, PLL_FRAC_DIV_START_LOW_1, reg->frac_div_start_low);
  466. DSI_PLL_REG_W(pll_base, PLL_FRAC_DIV_START_MID_1, reg->frac_div_start_mid);
  467. DSI_PLL_REG_W(pll_base, PLL_FRAC_DIV_START_HIGH_1, reg->frac_div_start_high);
  468. DSI_PLL_REG_W(pll_base, PLL_PLL_LOCKDET_RATE_1, reg->pll_lockdet_rate);
  469. DSI_PLL_REG_W(pll_base, PLL_PLL_LOCK_DELAY, 0x06);
  470. DSI_PLL_REG_W(pll_base, PLL_CMODE_1, pll->cphy_enabled ? 0x00 : 0x10);
  471. DSI_PLL_REG_W(pll_base, PLL_CLOCK_INVERTERS_1, reg->pll_clock_inverters);
  472. }
  473. static int dsi_pll_4nm_lock_status(struct dsi_pll_resource *pll)
  474. {
  475. int rc;
  476. u32 status;
  477. u32 const delay_us = 100;
  478. u32 const timeout_us = 5000;
  479. if (pll->phy_pll_bypass)
  480. return 0;
  481. rc = DSI_READ_POLL_TIMEOUT_ATOMIC_GEN(pll->pll_base, pll->index, PLL_COMMON_STATUS_ONE,
  482. status,
  483. ((status & BIT(0)) > 0),
  484. delay_us,
  485. timeout_us);
  486. if (rc)
  487. DSI_PLL_ERR(pll, "lock failed, status=0x%08x\n", status);
  488. return rc;
  489. }
  490. static void dsi_pll_disable_pll_bias(struct dsi_pll_resource *rsc)
  491. {
  492. u32 data = DSI_PLL_REG_R(rsc->phy_base, PHY_CMN_CTRL_0);
  493. DSI_PLL_REG_W(rsc->pll_base, PLL_SYSTEM_MUXES, 0);
  494. DSI_PLL_REG_W(rsc->phy_base, PHY_CMN_CTRL_0, data & ~BIT(5));
  495. ndelay(250);
  496. }
  497. static void dsi_pll_enable_pll_bias(struct dsi_pll_resource *rsc)
  498. {
  499. u32 data = DSI_PLL_REG_R(rsc->phy_base, PHY_CMN_CTRL_0);
  500. DSI_PLL_REG_W(rsc->phy_base, PHY_CMN_CTRL_0, data | BIT(5));
  501. DSI_PLL_REG_W(rsc->pll_base, PLL_SYSTEM_MUXES, 0xc0);
  502. ndelay(250);
  503. }
  504. static void dsi_pll_disable_global_clk(struct dsi_pll_resource *rsc)
  505. {
  506. u32 data;
  507. data = DSI_PLL_REG_R(rsc->phy_base, PHY_CMN_CLK_CFG1);
  508. DSI_PLL_REG_W(rsc->phy_base, PHY_CMN_CLK_CFG1, (data & ~BIT(5)));
  509. }
  510. static void dsi_pll_enable_global_clk(struct dsi_pll_resource *rsc)
  511. {
  512. u32 data;
  513. DSI_PLL_REG_W(rsc->phy_base, PHY_CMN_CTRL_3, 0x04);
  514. data = DSI_PLL_REG_R(rsc->phy_base, PHY_CMN_CLK_CFG1);
  515. /* Turn on clk_en_sel bit prior to resync toggle fifo */
  516. DSI_PLL_REG_W(rsc->phy_base, PHY_CMN_CLK_CFG1, (data | BIT(5) | BIT(4)));
  517. }
  518. static void dsi_pll_phy_analog_reset(struct dsi_pll_resource *rsc)
  519. {
  520. /*
  521. * Reset the PHY analog domain. This would be needed when
  522. * coming out of a 0p9 power collapse while
  523. * ensuring that the pads maintain LP00 or LP11 state
  524. */
  525. DSI_PLL_REG_W(rsc->phy_base, PHY_CMN_GLBL_DIGTOP_SPARE4, BIT(0));
  526. wmb(); /* Ensure that the reset is asserted */
  527. DSI_PLL_REG_W(rsc->phy_base, PHY_CMN_GLBL_DIGTOP_SPARE4, 0x0);
  528. wmb(); /* Ensure that the reset is deasserted */
  529. }
  530. static void dsi_pll_disable_sub(struct dsi_pll_resource *rsc)
  531. {
  532. DSI_PLL_REG_W(rsc->phy_base, PHY_CMN_RBUF_CTRL, 0);
  533. dsi_pll_disable_pll_bias(rsc);
  534. }
  535. static void dsi_pll_unprepare_stub(struct clk_hw *hw)
  536. {
  537. return;
  538. }
  539. static int dsi_pll_prepare_stub(struct clk_hw *hw)
  540. {
  541. return 0;
  542. }
  543. static int dsi_pll_set_rate_stub(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate)
  544. {
  545. return 0;
  546. }
  547. static long dsi_pll_byteclk_round_rate(struct clk_hw *hw, unsigned long rate,
  548. unsigned long *parent_rate)
  549. {
  550. struct dsi_pll_clk *pll = to_pll_clk_hw(hw);
  551. struct dsi_pll_resource *pll_res = pll->priv;
  552. return pll_res->byteclk_rate;
  553. }
  554. static long dsi_pll_pclk_round_rate(struct clk_hw *hw, unsigned long rate,
  555. unsigned long *parent_rate)
  556. {
  557. struct dsi_pll_clk *pll = to_pll_clk_hw(hw);
  558. struct dsi_pll_resource *pll_res = pll->priv;
  559. return pll_res->pclk_rate;
  560. }
  561. static unsigned long dsi_pll_vco_recalc_rate(struct dsi_pll_resource *pll)
  562. {
  563. u64 ref_clk;
  564. u64 multiplier;
  565. u32 frac;
  566. u32 dec;
  567. u32 pll_post_div;
  568. u64 pll_freq, tmp64;
  569. u64 vco_rate;
  570. struct dsi_pll_4nm *pll_4nm;
  571. struct dsi_pll_config *config;
  572. ref_clk = pll->vco_ref_clk_rate;
  573. pll_4nm = pll->priv;
  574. if (!pll_4nm) {
  575. DSI_PLL_ERR(pll, "pll configuration not found\n");
  576. return -EINVAL;
  577. }
  578. config = &pll_4nm->pll_configuration;
  579. dec = DSI_PLL_REG_R(pll->pll_base, PLL_DECIMAL_DIV_START_1);
  580. dec &= 0xFF;
  581. frac = DSI_PLL_REG_R(pll->pll_base, PLL_FRAC_DIV_START_LOW_1);
  582. frac |= ((DSI_PLL_REG_R(pll->pll_base, PLL_FRAC_DIV_START_MID_1) & 0xFF) << 8);
  583. frac |= ((DSI_PLL_REG_R(pll->pll_base, PLL_FRAC_DIV_START_HIGH_1) & 0x3) << 16);
  584. multiplier = 1 << config->frac_bits;
  585. pll_freq = dec * (ref_clk * 2);
  586. tmp64 = (ref_clk * 2 * frac);
  587. pll_freq += div_u64(tmp64, multiplier);
  588. pll_post_div = dsi_pll_get_pll_post_div(pll);
  589. vco_rate = div_u64(pll_freq, pll_post_div);
  590. return vco_rate;
  591. }
  592. static unsigned long dsi_pll_byteclk_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
  593. {
  594. struct dsi_pll_clk *byte_pll = to_pll_clk_hw(hw);
  595. struct dsi_pll_resource *pll = NULL;
  596. u64 vco_rate = 0;
  597. u64 byte_rate = 0;
  598. u32 phy_post_div;
  599. if (!byte_pll->priv) {
  600. DSI_PLL_INFO(pll, "pll priv is null\n");
  601. return 0;
  602. }
  603. pll = byte_pll->priv;
  604. /*
  605. * In the case when byteclk rate is set, the recalculation function
  606. * should return the current rate. Recalc rate is also called during
  607. * clock registration, during which the function should reverse
  608. * calculate clock rates that were set as part of UEFI.
  609. */
  610. if (pll->byteclk_rate != 0) {
  611. DSI_PLL_DBG(pll, "returning byte clk rate = %lld %lld\n", pll->byteclk_rate,
  612. parent_rate);
  613. return pll->byteclk_rate;
  614. }
  615. vco_rate = dsi_pll_vco_recalc_rate(pll);
  616. phy_post_div = dsi_pll_get_phy_post_div(pll);
  617. byte_rate = div_u64(vco_rate, phy_post_div);
  618. if (pll->type == DSI_PHY_TYPE_DPHY)
  619. byte_rate = div_u64(byte_rate, 8);
  620. else
  621. byte_rate = div_u64(byte_rate, 7);
  622. return byte_rate;
  623. }
  624. static unsigned long dsi_pll_pclk_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
  625. {
  626. struct dsi_pll_clk *pix_pll = to_pll_clk_hw(hw);
  627. struct dsi_pll_resource *pll = NULL;
  628. u64 vco_rate = 0;
  629. u64 pclk_rate = 0;
  630. u32 phy_post_div, pclk_div;
  631. if (!pix_pll->priv) {
  632. DSI_PLL_INFO(pll, "pll priv is null\n");
  633. return 0;
  634. }
  635. pll = pix_pll->priv;
  636. /*
  637. * In the case when pclk rate is set, the recalculation function
  638. * should return the current rate. Recalc rate is also called during
  639. * clock registration, during which the function should reverse
  640. * calculate the clock rates that were set as part of UEFI.
  641. */
  642. if (pll->pclk_rate != 0) {
  643. DSI_PLL_DBG(pll, "returning pclk rate = %lld %lld\n", pll->pclk_rate, parent_rate);
  644. return pll->pclk_rate;
  645. }
  646. vco_rate = dsi_pll_vco_recalc_rate(pll);
  647. if (pll->type == DSI_PHY_TYPE_DPHY) {
  648. phy_post_div = dsi_pll_get_phy_post_div(pll);
  649. pclk_rate = div_u64(vco_rate, phy_post_div);
  650. pclk_rate = div_u64(pclk_rate, 2);
  651. pclk_div = dsi_pll_get_pclk_div(pll);
  652. pclk_rate = div_u64(pclk_rate, pclk_div);
  653. } else {
  654. pclk_rate = vco_rate * 2;
  655. pclk_rate = div_u64(pclk_rate, 7);
  656. pclk_div = dsi_pll_get_pclk_div(pll);
  657. pclk_rate = div_u64(pclk_rate, pclk_div);
  658. }
  659. return pclk_rate;
  660. }
  661. static const struct clk_ops pll_byteclk_ops = {
  662. .recalc_rate = dsi_pll_byteclk_recalc_rate,
  663. .set_rate = dsi_pll_set_rate_stub,
  664. .round_rate = dsi_pll_byteclk_round_rate,
  665. .prepare = dsi_pll_prepare_stub,
  666. .unprepare = dsi_pll_unprepare_stub,
  667. };
  668. static const struct clk_ops pll_pclk_ops = {
  669. .recalc_rate = dsi_pll_pclk_recalc_rate,
  670. .set_rate = dsi_pll_set_rate_stub,
  671. .round_rate = dsi_pll_pclk_round_rate,
  672. .prepare = dsi_pll_prepare_stub,
  673. .unprepare = dsi_pll_unprepare_stub,
  674. };
  675. /*
  676. * Clock tree for generating DSI byte and pclk.
  677. *
  678. *
  679. * +-------------------------------+ +----------------------------+
  680. * | dsi_phy_pll_out_byteclk | | dsi_phy_pll_out_dsiclk |
  681. * +---------------+---------------+ +--------------+-------------+
  682. * | |
  683. * | |
  684. * v v
  685. * dsi_byte_clk dsi_pclk
  686. *
  687. *
  688. */
  689. static struct dsi_pll_clk dsi0_phy_pll_out_byteclk = {
  690. .hw.init = &(struct clk_init_data){
  691. .name = "dsi0_phy_pll_out_byteclk",
  692. .ops = &pll_byteclk_ops,
  693. },
  694. };
  695. static struct dsi_pll_clk dsi1_phy_pll_out_byteclk = {
  696. .hw.init = &(struct clk_init_data){
  697. .name = "dsi1_phy_pll_out_byteclk",
  698. .ops = &pll_byteclk_ops,
  699. },
  700. };
  701. static struct dsi_pll_clk dsi0_phy_pll_out_dsiclk = {
  702. .hw.init = &(struct clk_init_data){
  703. .name = "dsi0_phy_pll_out_dsiclk",
  704. .ops = &pll_pclk_ops,
  705. },
  706. };
  707. static struct dsi_pll_clk dsi1_phy_pll_out_dsiclk = {
  708. .hw.init = &(struct clk_init_data){
  709. .name = "dsi1_phy_pll_out_dsiclk",
  710. .ops = &pll_pclk_ops,
  711. },
  712. };
  713. int dsi_pll_clock_register_4nm(struct platform_device *pdev, struct dsi_pll_resource *pll_res)
  714. {
  715. int rc = 0, ndx;
  716. struct clk *clk;
  717. struct clk_onecell_data *clk_data;
  718. int num_clks = 4;
  719. if (!pdev || !pdev->dev.of_node || !pll_res || !pll_res->pll_base || !pll_res->phy_base) {
  720. DSI_PLL_ERR(pll_res, "Invalid params\n");
  721. return -EINVAL;
  722. }
  723. ndx = pll_res->index;
  724. if (ndx >= DSI_PLL_MAX) {
  725. DSI_PLL_ERR(pll_res, "not supported\n");
  726. return -EINVAL;
  727. }
  728. pll_rsc_db[ndx] = pll_res;
  729. plls[ndx].rsc = pll_res;
  730. pll_res->priv = &plls[ndx];
  731. pll_res->vco_delay = VCO_DELAY_USEC;
  732. pll_res->vco_min_rate = 600000000;
  733. pll_res->vco_ref_clk_rate = 19200000UL;
  734. dsi_pll_setup_config(pll_res->priv, pll_res);
  735. clk_data = devm_kzalloc(&pdev->dev, sizeof(struct clk_onecell_data),
  736. GFP_KERNEL);
  737. if (!clk_data)
  738. return -ENOMEM;
  739. clk_data->clks = devm_kzalloc(&pdev->dev, (num_clks * sizeof(struct clk *)), GFP_KERNEL);
  740. if (!clk_data->clks)
  741. return -ENOMEM;
  742. clk_data->clk_num = num_clks;
  743. /* Establish client data */
  744. if (ndx == 0) {
  745. dsi0_phy_pll_out_byteclk.priv = pll_res;
  746. dsi0_phy_pll_out_dsiclk.priv = pll_res;
  747. clk = devm_clk_register(&pdev->dev, &dsi0_phy_pll_out_byteclk.hw);
  748. if (IS_ERR(clk)) {
  749. DSI_PLL_ERR(pll_res, "clk registration failed for DSI clock\n");
  750. rc = -EINVAL;
  751. goto clk_register_fail;
  752. }
  753. clk_data->clks[0] = clk;
  754. clk = devm_clk_register(&pdev->dev, &dsi0_phy_pll_out_dsiclk.hw);
  755. if (IS_ERR(clk)) {
  756. DSI_PLL_ERR(pll_res, "clk registration failed for DSI clock\n");
  757. rc = -EINVAL;
  758. goto clk_register_fail;
  759. }
  760. clk_data->clks[1] = clk;
  761. rc = of_clk_add_provider(pdev->dev.of_node, of_clk_src_onecell_get, clk_data);
  762. } else {
  763. dsi1_phy_pll_out_byteclk.priv = pll_res;
  764. dsi1_phy_pll_out_dsiclk.priv = pll_res;
  765. clk = devm_clk_register(&pdev->dev, &dsi1_phy_pll_out_byteclk.hw);
  766. if (IS_ERR(clk)) {
  767. DSI_PLL_ERR(pll_res, "clk registration failed for DSI clock\n");
  768. rc = -EINVAL;
  769. goto clk_register_fail;
  770. }
  771. clk_data->clks[2] = clk;
  772. clk = devm_clk_register(&pdev->dev, &dsi1_phy_pll_out_dsiclk.hw);
  773. if (IS_ERR(clk)) {
  774. DSI_PLL_ERR(pll_res, "clk registration failed for DSI clock\n");
  775. rc = -EINVAL;
  776. goto clk_register_fail;
  777. }
  778. clk_data->clks[3] = clk;
  779. rc = of_clk_add_provider(pdev->dev.of_node,
  780. of_clk_src_onecell_get, clk_data);
  781. }
  782. if (!rc) {
  783. DSI_PLL_INFO(pll_res, "Registered clocks successfully\n");
  784. return rc;
  785. }
  786. clk_register_fail:
  787. return rc;
  788. }
  789. static int dsi_pll_4nm_set_byteclk_div(struct dsi_pll_resource *pll, bool commit)
  790. {
  791. int i = 0;
  792. int table_size;
  793. u32 pll_post_div = 0, phy_post_div = 0;
  794. struct dsi_pll_div_table *table;
  795. u64 bitclk_rate;
  796. u64 const phy_rate_split = 1500000000UL;
  797. if (pll->type == DSI_PHY_TYPE_DPHY) {
  798. bitclk_rate = pll->byteclk_rate * 8;
  799. if (bitclk_rate <= phy_rate_split) {
  800. table = pll_4nm_dphy_lb;
  801. table_size = ARRAY_SIZE(pll_4nm_dphy_lb);
  802. } else {
  803. table = pll_4nm_dphy_hb;
  804. table_size = ARRAY_SIZE(pll_4nm_dphy_hb);
  805. }
  806. } else {
  807. bitclk_rate = pll->byteclk_rate * 7;
  808. if (bitclk_rate <= phy_rate_split) {
  809. table = pll_4nm_cphy_lb;
  810. table_size = ARRAY_SIZE(pll_4nm_cphy_lb);
  811. } else {
  812. table = pll_4nm_cphy_hb;
  813. table_size = ARRAY_SIZE(pll_4nm_cphy_hb);
  814. }
  815. }
  816. for (i = 0; i < table_size; i++) {
  817. if ((table[i].min_hz <= bitclk_rate) && (bitclk_rate <= table[i].max_hz)) {
  818. pll_post_div = table[i].pll_div;
  819. phy_post_div = table[i].phy_div;
  820. break;
  821. }
  822. }
  823. DSI_PLL_DBG(pll, "bit clk rate: %llu, pll_post_div: %d, phy_post_div: %d\n",
  824. bitclk_rate, pll_post_div, phy_post_div);
  825. if (commit) {
  826. dsi_pll_set_pll_post_div(pll, pll_post_div);
  827. dsi_pll_set_phy_post_div(pll, phy_post_div);
  828. }
  829. pll->vco_rate = bitclk_rate * pll_post_div * phy_post_div;
  830. return 0;
  831. }
  832. static int dsi_pll_calc_dphy_pclk_div(struct dsi_pll_resource *pll)
  833. {
  834. u32 m_val, n_val; /* M and N values of MND trio */
  835. u32 pclk_div;
  836. if (pll->bpp == 30 && pll->lanes == 4) {
  837. /* RGB101010 */
  838. m_val = 2;
  839. n_val = 3;
  840. } else if (pll->bpp == 18 && pll->lanes == 2) {
  841. /* RGB666_packed */
  842. m_val = 2;
  843. n_val = 9;
  844. } else if (pll->bpp == 18 && pll->lanes == 4) {
  845. /* RGB666_packed */
  846. m_val = 4;
  847. n_val = 9;
  848. } else if (pll->bpp == 16 && pll->lanes == 3) {
  849. /* RGB565 */
  850. m_val = 3;
  851. n_val = 8;
  852. } else {
  853. m_val = 1;
  854. n_val = 1;
  855. }
  856. /* Calculating pclk_div assuming dsiclk_sel to be 1 */
  857. pclk_div = pll->bpp;
  858. pclk_div = mult_frac(pclk_div, m_val, n_val);
  859. do_div(pclk_div, 2);
  860. do_div(pclk_div, pll->lanes);
  861. DSI_PLL_DBG(pll, "bpp: %d, lanes: %d, m_val: %u, n_val: %u, pclk_div: %u\n",
  862. pll->bpp, pll->lanes, m_val, n_val, pclk_div);
  863. return pclk_div;
  864. }
  865. static int dsi_pll_calc_cphy_pclk_div(struct dsi_pll_resource *pll)
  866. {
  867. u32 m_val, n_val; /* M and N values of MND trio */
  868. u32 pclk_div;
  869. u32 phy_post_div = dsi_pll_get_phy_post_div(pll);
  870. if (pll->bpp == 24 && pll->lanes == 2) {
  871. /*
  872. * RGB888 or DSC is enabled
  873. * Skipping DSC enabled check
  874. */
  875. m_val = 2;
  876. n_val = 3;
  877. } else if (pll->bpp == 30) {
  878. /* RGB101010 */
  879. if (pll->lanes == 1) {
  880. m_val = 4;
  881. n_val = 15;
  882. } else {
  883. m_val = 16;
  884. n_val = 35;
  885. }
  886. } else if (pll->bpp == 18) {
  887. /* RGB666_packed */
  888. if (pll->lanes == 1) {
  889. m_val = 8;
  890. n_val = 63;
  891. } else if (pll->lanes == 2) {
  892. m_val = 16;
  893. n_val = 63;
  894. } else if (pll->lanes == 3) {
  895. m_val = 8;
  896. n_val = 21;
  897. } else {
  898. m_val = 1;
  899. n_val = 1;
  900. }
  901. } else if (pll->bpp == 16 && pll->lanes == 3) {
  902. /* RGB565 */
  903. m_val = 3;
  904. n_val = 7;
  905. } else {
  906. m_val = 1;
  907. n_val = 1;
  908. }
  909. /* Calculating pclk_div assuming dsiclk_sel to be 3 */
  910. pclk_div = pll->bpp * phy_post_div;
  911. pclk_div = mult_frac(pclk_div, m_val, n_val);
  912. do_div(pclk_div, 8);
  913. do_div(pclk_div, pll->lanes);
  914. DSI_PLL_DBG(pll, "bpp: %d, lanes: %d, m_val: %u, n_val: %u, phy_post_div: %u pclk_div: %u\n",
  915. pll->bpp, pll->lanes, m_val, n_val, phy_post_div, pclk_div);
  916. return pclk_div;
  917. }
  918. static int dsi_pll_4nm_set_pclk_div(struct dsi_pll_resource *pll, bool commit)
  919. {
  920. int dsi_clk = 0, pclk_div = 0;
  921. u64 pclk_src_rate;
  922. u32 pll_post_div;
  923. u32 phy_post_div;
  924. pll_post_div = dsi_pll_get_pll_post_div(pll);
  925. pclk_src_rate = div_u64(pll->vco_rate, pll_post_div);
  926. if (pll->type == DSI_PHY_TYPE_DPHY) {
  927. dsi_clk = 0x1;
  928. phy_post_div = dsi_pll_get_phy_post_div(pll);
  929. pclk_src_rate = div_u64(pclk_src_rate, phy_post_div);
  930. pclk_src_rate = div_u64(pclk_src_rate, 2);
  931. pclk_div = dsi_pll_calc_dphy_pclk_div(pll);
  932. } else {
  933. dsi_clk = 0x3;
  934. pclk_src_rate *= 2;
  935. pclk_src_rate = div_u64(pclk_src_rate, 7);
  936. pclk_div = dsi_pll_calc_cphy_pclk_div(pll);
  937. }
  938. pll->pclk_rate = div_u64(pclk_src_rate, pclk_div);
  939. DSI_PLL_DBG(pll, "pclk rate: %llu, dsi_clk: %d, pclk_div: %d\n",
  940. pll->pclk_rate, dsi_clk, pclk_div);
  941. if (commit) {
  942. dsi_pll_set_dsi_clk(pll, dsi_clk);
  943. dsi_pll_set_pclk_div(pll, pclk_div);
  944. }
  945. return 0;
  946. }
  947. static int dsi_pll_4nm_vco_set_rate(struct dsi_pll_resource *pll_res)
  948. {
  949. struct dsi_pll_4nm *pll;
  950. pll = pll_res->priv;
  951. if (!pll) {
  952. DSI_PLL_ERR(pll_res, "pll configuration not found\n");
  953. return -EINVAL;
  954. }
  955. DSI_PLL_DBG(pll_res, "rate=%lu\n", pll_res->vco_rate);
  956. pll_res->vco_current_rate = pll_res->vco_rate;
  957. dsi_pll_detect_phy_mode(pll, pll_res);
  958. dsi_pll_calc_dec_frac(pll, pll_res);
  959. dsi_pll_calc_ssc(pll, pll_res);
  960. dsi_pll_commit(pll, pll_res);
  961. dsi_pll_config_hzindep_reg(pll, pll_res);
  962. dsi_pll_ssc_commit(pll, pll_res);
  963. /* flush, ensure all register writes are done*/
  964. wmb();
  965. return 0;
  966. }
  967. static int dsi_pll_read_stored_trim_codes(struct dsi_pll_resource *pll_res,
  968. unsigned long vco_clk_rate)
  969. {
  970. int i;
  971. bool found = false;
  972. if (!pll_res->dfps)
  973. return -EINVAL;
  974. for (i = 0; i < pll_res->dfps->vco_rate_cnt; i++) {
  975. struct dfps_codes_info *codes_info = &pll_res->dfps->codes_dfps[i];
  976. DSI_PLL_DBG(pll_res, "valid=%d vco_rate=%d, code %d %d %d\n",
  977. codes_info->is_valid, codes_info->clk_rate,
  978. codes_info->pll_codes.pll_codes_1,
  979. codes_info->pll_codes.pll_codes_2,
  980. codes_info->pll_codes.pll_codes_3);
  981. if (vco_clk_rate != codes_info->clk_rate && codes_info->is_valid)
  982. continue;
  983. pll_res->cache_pll_trim_codes[0] = codes_info->pll_codes.pll_codes_1;
  984. pll_res->cache_pll_trim_codes[1] = codes_info->pll_codes.pll_codes_2;
  985. pll_res->cache_pll_trim_codes[2] = codes_info->pll_codes.pll_codes_3;
  986. found = true;
  987. break;
  988. }
  989. if (!found)
  990. return -EINVAL;
  991. DSI_PLL_DBG(pll_res, "trim_code_0=0x%x trim_code_1=0x%x trim_code_2=0x%x\n",
  992. pll_res->cache_pll_trim_codes[0],
  993. pll_res->cache_pll_trim_codes[1],
  994. pll_res->cache_pll_trim_codes[2]);
  995. return 0;
  996. }
  997. static void dsi_pll_4nm_dynamic_refresh(struct dsi_pll_4nm *pll, struct dsi_pll_resource *rsc)
  998. {
  999. u32 data;
  1000. u32 offset = DSI_PHY_TO_PLL_OFFSET;
  1001. u32 upper_addr = 0;
  1002. u32 upper_addr2 = 0;
  1003. struct dsi_pll_regs *reg = &pll->reg_setup;
  1004. data = DSI_PLL_REG_R(rsc->phy_base, PHY_CMN_CLK_CFG1);
  1005. data &= ~BIT(5);
  1006. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL0, PHY_CMN_CLK_CFG1,
  1007. PHY_CMN_PLL_CNTRL, data, 0);
  1008. upper_addr |= (upper_8_bit(PHY_CMN_CLK_CFG1) << 0);
  1009. upper_addr |= (upper_8_bit(PHY_CMN_PLL_CNTRL) << 1);
  1010. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL1,
  1011. PHY_CMN_RBUF_CTRL, (PLL_CORE_INPUT_OVERRIDE + offset), 0, 0x12);
  1012. upper_addr |= (upper_8_bit(PHY_CMN_RBUF_CTRL) << 2);
  1013. upper_addr |= (upper_8_bit(PLL_CORE_INPUT_OVERRIDE + offset) << 3);
  1014. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL2,
  1015. (PLL_DECIMAL_DIV_START_1 + offset), (PLL_FRAC_DIV_START_LOW_1 + offset),
  1016. reg->decimal_div_start, reg->frac_div_start_low);
  1017. upper_addr |= (upper_8_bit(PLL_DECIMAL_DIV_START_1 + offset) << 4);
  1018. upper_addr |= (upper_8_bit(PLL_FRAC_DIV_START_LOW_1 + offset) << 5);
  1019. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL3,
  1020. (PLL_FRAC_DIV_START_MID_1 + offset), (PLL_FRAC_DIV_START_HIGH_1 + offset),
  1021. reg->frac_div_start_mid, reg->frac_div_start_high);
  1022. upper_addr |= (upper_8_bit(PLL_FRAC_DIV_START_MID_1 + offset) << 6);
  1023. upper_addr |= (upper_8_bit(PLL_FRAC_DIV_START_HIGH_1 + offset) << 7);
  1024. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL4,
  1025. (PLL_SYSTEM_MUXES + offset), (PLL_PLL_LOCKDET_RATE_1 + offset), 0xc0, 0x10);
  1026. upper_addr |= (upper_8_bit(PLL_SYSTEM_MUXES + offset) << 8);
  1027. upper_addr |= (upper_8_bit(PLL_PLL_LOCKDET_RATE_1 + offset) << 9);
  1028. data = DSI_PLL_REG_R(rsc->pll_base, PLL_PLL_OUTDIV_RATE) & 0x03;
  1029. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL5,
  1030. (PLL_PLL_OUTDIV_RATE + offset), (PLL_PLL_LOCK_DELAY + offset), data, 0x06);
  1031. upper_addr |= (upper_8_bit(PLL_PLL_OUTDIV_RATE + offset) << 10);
  1032. upper_addr |= (upper_8_bit(PLL_PLL_LOCK_DELAY + offset) << 11);
  1033. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL6,
  1034. (PLL_CMODE_1 + offset), (PLL_CLOCK_INVERTERS_1 + offset),
  1035. pll->cphy_enabled ? 0x00 : 0x10, reg->pll_clock_inverters);
  1036. upper_addr |= (upper_8_bit(PLL_CMODE_1 + offset) << 12);
  1037. upper_addr |= (upper_8_bit(PLL_CLOCK_INVERTERS_1 + offset) << 13);
  1038. data = DSI_PLL_REG_R(rsc->pll_base, PLL_VCO_CONFIG_1);
  1039. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL7,
  1040. (PLL_ANALOG_CONTROLS_FIVE_1 + offset), (PLL_VCO_CONFIG_1 + offset), 0x01,
  1041. data);
  1042. upper_addr |= (upper_8_bit(PLL_ANALOG_CONTROLS_FIVE_1 + offset) << 14);
  1043. upper_addr |= (upper_8_bit(PLL_VCO_CONFIG_1 + offset) << 15);
  1044. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL8,
  1045. (PLL_ANALOG_CONTROLS_FIVE + offset), (PLL_ANALOG_CONTROLS_TWO + offset),
  1046. 0x01, 0x03);
  1047. upper_addr |= (upper_8_bit(PLL_ANALOG_CONTROLS_FIVE + offset) << 16);
  1048. upper_addr |= (upper_8_bit(PLL_ANALOG_CONTROLS_TWO + offset) << 17);
  1049. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL9,
  1050. (PLL_ANALOG_CONTROLS_THREE + offset), (PLL_DSM_DIVIDER + offset),
  1051. rsc->cache_pll_trim_codes[2], 0x00);
  1052. upper_addr |= (upper_8_bit(PLL_ANALOG_CONTROLS_THREE + offset) << 18);
  1053. upper_addr |= (upper_8_bit(PLL_DSM_DIVIDER + offset) << 19);
  1054. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL10,
  1055. (PLL_FEEDBACK_DIVIDER + offset), (PLL_CALIBRATION_SETTINGS + offset),
  1056. 0x4E, 0x40);
  1057. upper_addr |= (upper_8_bit(PLL_FEEDBACK_DIVIDER + offset) << 20);
  1058. upper_addr |= (upper_8_bit(PLL_CALIBRATION_SETTINGS + offset) << 21);
  1059. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL11,
  1060. (PLL_BAND_SEL_CAL_SETTINGS_THREE + offset),
  1061. (PLL_FREQ_DETECT_SETTINGS_ONE + offset), 0xBA, 0x0C);
  1062. upper_addr |= (upper_8_bit(PLL_BAND_SEL_CAL_SETTINGS_THREE + offset) << 22);
  1063. upper_addr |= (upper_8_bit(PLL_FREQ_DETECT_SETTINGS_ONE + offset) << 23);
  1064. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL12,
  1065. (PLL_OUTDIV + offset), (PLL_CORE_OVERRIDE + offset), 0, 0);
  1066. upper_addr |= (upper_8_bit(PLL_OUTDIV + offset) << 24);
  1067. upper_addr |= (upper_8_bit(PLL_CORE_OVERRIDE + offset) << 25);
  1068. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL13,
  1069. (PLL_PLL_DIGITAL_TIMERS_TWO + offset), (PLL_PLL_PROP_GAIN_RATE_1 + offset),
  1070. 0x08, reg->pll_prop_gain_rate);
  1071. upper_addr |= (upper_8_bit(PLL_PLL_DIGITAL_TIMERS_TWO + offset) << 26);
  1072. upper_addr |= (upper_8_bit(PLL_PLL_PROP_GAIN_RATE_1 + offset) << 27);
  1073. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL14,
  1074. (PLL_PLL_BAND_SEL_RATE_1 + offset),
  1075. (PLL_PLL_INT_GAIN_IFILT_BAND_1 + offset), 0xC0, 0x82);
  1076. upper_addr |= (upper_8_bit(PLL_PLL_BAND_SEL_RATE_1 + offset) << 28);
  1077. upper_addr |= (upper_8_bit(PLL_PLL_INT_GAIN_IFILT_BAND_1 + offset) << 29);
  1078. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL15,
  1079. (PLL_PLL_FL_INT_GAIN_PFILT_BAND_1 + offset),
  1080. (PLL_PLL_LOCK_OVERRIDE + offset), 0x4c, 0x80);
  1081. upper_addr |= (upper_8_bit(PLL_PLL_FL_INT_GAIN_PFILT_BAND_1 + offset) << 30);
  1082. upper_addr |= (upper_8_bit(PLL_PLL_LOCK_OVERRIDE + offset) << 31);
  1083. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL16,
  1084. (PLL_PFILT + offset), (PLL_IFILT + offset),
  1085. 0x29, 0x3f);
  1086. upper_addr2 |= (upper_8_bit(PLL_PFILT + offset) << 0);
  1087. upper_addr2 |= (upper_8_bit(PLL_IFILT + offset) << 1);
  1088. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL17,
  1089. (PLL_SYSTEM_MUXES + offset), (PLL_CALIBRATION_SETTINGS + offset),
  1090. 0xe0, 0x44);
  1091. upper_addr2 |= (upper_8_bit(PLL_BAND_SEL_CAL + offset) << 2);
  1092. upper_addr2 |= (upper_8_bit(PLL_CALIBRATION_SETTINGS + offset) << 3);
  1093. data = DSI_PLL_REG_R(rsc->phy_base, PHY_CMN_CLK_CFG0);
  1094. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL18,
  1095. PHY_CMN_CTRL_2, PHY_CMN_CLK_CFG0, 0x40, data);
  1096. if (rsc->slave)
  1097. DSI_DYN_PLL_REG_W(rsc->slave->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL10,
  1098. PHY_CMN_CLK_CFG0, PHY_CMN_CTRL_0, data, 0x7f);
  1099. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL27,
  1100. PHY_CMN_PLL_CNTRL, PHY_CMN_PLL_CNTRL, 0x01, 0x01);
  1101. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL28,
  1102. PHY_CMN_PLL_CNTRL, PHY_CMN_PLL_CNTRL, 0x01, 0x01);
  1103. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL29,
  1104. PHY_CMN_PLL_CNTRL, PHY_CMN_PLL_CNTRL, 0x01, 0x01);
  1105. data = DSI_PLL_REG_R(rsc->phy_base, PHY_CMN_CLK_CFG1) | BIT(5);
  1106. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL30,
  1107. PHY_CMN_CLK_CFG1, PHY_CMN_RBUF_CTRL, data, 0x01);
  1108. DSI_DYN_PLL_REG_W(rsc->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL31,
  1109. PHY_CMN_CLK_CFG1, PHY_CMN_CLK_CFG1, data, data);
  1110. if (rsc->slave) {
  1111. data = DSI_PLL_REG_R(rsc->slave->phy_base, PHY_CMN_CLK_CFG1) | BIT(5);
  1112. DSI_DYN_PLL_REG_W(rsc->slave->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL30,
  1113. PHY_CMN_CLK_CFG1, PHY_CMN_RBUF_CTRL, data, 0x01);
  1114. DSI_DYN_PLL_REG_W(rsc->slave->dyn_pll_base, DSI_DYNAMIC_REFRESH_PLL_CTRL31,
  1115. PHY_CMN_CLK_CFG1, PHY_CMN_CLK_CFG1, data, data);
  1116. }
  1117. DSI_PLL_REG_W(rsc->dyn_pll_base,
  1118. DSI_DYNAMIC_REFRESH_PLL_UPPER_ADDR, upper_addr);
  1119. DSI_PLL_REG_W(rsc->dyn_pll_base,
  1120. DSI_DYNAMIC_REFRESH_PLL_UPPER_ADDR2, upper_addr2);
  1121. wmb(); /* commit register writes */
  1122. }
  1123. static int dsi_pll_4nm_dynamic_clk_vco_set_rate(struct dsi_pll_resource *rsc)
  1124. {
  1125. int rc;
  1126. struct dsi_pll_4nm *pll;
  1127. u32 rate;
  1128. if (!rsc) {
  1129. DSI_PLL_ERR(rsc, "pll resource not found\n");
  1130. return -EINVAL;
  1131. }
  1132. rate = rsc->vco_rate;
  1133. pll = rsc->priv;
  1134. if (!pll) {
  1135. DSI_PLL_ERR(rsc, "pll configuration not found\n");
  1136. return -EINVAL;
  1137. }
  1138. rc = dsi_pll_read_stored_trim_codes(rsc, rate);
  1139. if (rc) {
  1140. DSI_PLL_ERR(rsc, "cannot find pll codes rate=%ld\n", rate);
  1141. return -EINVAL;
  1142. }
  1143. DSI_PLL_DBG(rsc, "ndx=%d, rate=%lu\n", rsc->index, rate);
  1144. rsc->vco_current_rate = rate;
  1145. dsi_pll_calc_dec_frac(pll, rsc);
  1146. /* program dynamic refresh control registers */
  1147. dsi_pll_4nm_dynamic_refresh(pll, rsc);
  1148. return 0;
  1149. }
  1150. static int dsi_pll_4nm_enable(struct dsi_pll_resource *rsc)
  1151. {
  1152. int rc = 0;
  1153. /* Start PLL */
  1154. DSI_PLL_REG_W(rsc->phy_base, PHY_CMN_PLL_CNTRL, 0x01);
  1155. /*
  1156. * ensure all PLL configurations are written prior to checking
  1157. * for PLL lock.
  1158. */
  1159. wmb();
  1160. /* Check for PLL lock */
  1161. rc = dsi_pll_4nm_lock_status(rsc);
  1162. if (rc) {
  1163. DSI_PLL_ERR(rsc, "lock failed\n");
  1164. goto error;
  1165. }
  1166. dsi_pll_enable_global_clk(rsc);
  1167. if (rsc->slave)
  1168. dsi_pll_enable_global_clk(rsc->slave);
  1169. /* flush, ensure all register writes are done*/
  1170. wmb();
  1171. error:
  1172. return rc;
  1173. }
  1174. static int dsi_pll_4nm_disable(struct dsi_pll_resource *rsc)
  1175. {
  1176. int rc = 0;
  1177. DSI_PLL_DBG(rsc, "stop PLL\n");
  1178. /*
  1179. * To avoid any stray glitches while
  1180. * abruptly powering down the PLL
  1181. * make sure to gate the clock using
  1182. * the clock enable bit before powering
  1183. * down the PLL
  1184. */
  1185. dsi_pll_disable_global_clk(rsc);
  1186. DSI_PLL_REG_W(rsc->phy_base, PHY_CMN_PLL_CNTRL, 0);
  1187. dsi_pll_disable_sub(rsc);
  1188. if (rsc->slave) {
  1189. dsi_pll_disable_global_clk(rsc->slave);
  1190. dsi_pll_disable_sub(rsc->slave);
  1191. }
  1192. /* flush, ensure all register writes are done*/
  1193. wmb();
  1194. return rc;
  1195. }
  1196. void dsi_pll_assert_pll_reset(struct dsi_pll_resource *rsc)
  1197. {
  1198. u32 data = 0;
  1199. DSI_PLL_REG_W(rsc->phy_base, PHY_CMN_CTRL_1, data | BIT(7));
  1200. /* Ensure Assert is through */
  1201. wmb();
  1202. DSI_PLL_REG_W(rsc->phy_base, PHY_CMN_CTRL_1, data & ~BIT(7));
  1203. /* Ensure deassert is through */
  1204. wmb();
  1205. }
  1206. void dsi_pll_4nm_trigger_resets_pre_enable(struct dsi_pll_resource *rsc)
  1207. {
  1208. /*
  1209. * Assert power on reset on DSI PHY Analog immeditately
  1210. * after 0P9 resume to make sure PHY starts in a
  1211. * clean state
  1212. */
  1213. dsi_pll_phy_analog_reset(rsc);
  1214. if (rsc->slave)
  1215. dsi_pll_phy_analog_reset(rsc->slave);
  1216. /*
  1217. * Trigger PLL reset as well to clear out any jitter
  1218. * introduced as result of 0p9 collapse
  1219. */
  1220. dsi_pll_assert_pll_reset(rsc);
  1221. if (rsc->slave)
  1222. dsi_pll_assert_pll_reset(rsc->slave);
  1223. }
  1224. int dsi_pll_4nm_configure(void *pll, bool commit)
  1225. {
  1226. int rc = 0;
  1227. struct dsi_pll_resource *rsc = (struct dsi_pll_resource *)pll;
  1228. /* These resets are needed for resetting Analog and PLL portions
  1229. * of DSI PHY before PLL is enabled and locked
  1230. */
  1231. if (commit)
  1232. dsi_pll_4nm_trigger_resets_pre_enable(rsc);
  1233. dsi_pll_config_slave(rsc);
  1234. /* PLL power needs to be enabled before accessing PLL registers */
  1235. dsi_pll_enable_pll_bias(rsc);
  1236. if (rsc->slave)
  1237. dsi_pll_enable_pll_bias(rsc->slave);
  1238. dsi_pll_init_val(rsc);
  1239. rc = dsi_pll_4nm_set_byteclk_div(rsc, commit);
  1240. if (commit) {
  1241. rc = dsi_pll_4nm_set_pclk_div(rsc, commit);
  1242. rc = dsi_pll_4nm_vco_set_rate(rsc);
  1243. } else {
  1244. rc = dsi_pll_4nm_dynamic_clk_vco_set_rate(rsc);
  1245. }
  1246. return 0;
  1247. }
  1248. int dsi_pll_4nm_toggle(void *pll, bool prepare)
  1249. {
  1250. int rc = 0;
  1251. struct dsi_pll_resource *pll_res = (struct dsi_pll_resource *)pll;
  1252. if (!pll_res) {
  1253. DSI_PLL_ERR(pll_res, "dsi pll resources are not available\n");
  1254. return -EINVAL;
  1255. }
  1256. if (prepare) {
  1257. rc = dsi_pll_4nm_enable(pll_res);
  1258. if (rc)
  1259. DSI_PLL_ERR(pll_res, "enable failed: %d\n", rc);
  1260. } else {
  1261. rc = dsi_pll_4nm_disable(pll_res);
  1262. if (rc)
  1263. DSI_PLL_ERR(pll_res, "disable failed: %d\n", rc);
  1264. }
  1265. return rc;
  1266. }