diff options
Diffstat (limited to 'drivers/clk/qcom/clk-alpha-pll.c')
| -rw-r--r-- | drivers/clk/qcom/clk-alpha-pll.c | 183 |
1 files changed, 176 insertions, 7 deletions
diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c index 8a412ef47e16..f9105443d7db 100644 --- a/drivers/clk/qcom/clk-alpha-pll.c +++ b/drivers/clk/qcom/clk-alpha-pll.c @@ -1,7 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2015, 2018, The Linux Foundation. All rights reserved. - * Copyright (c) 2021, 2023, Qualcomm Innovation Center, Inc. All rights reserved. + * Copyright (c) 2021, 2023-2024, Qualcomm Innovation Center, Inc. All rights reserved. */ #include <linux/kernel.h> @@ -40,7 +40,8 @@ #define PLL_USER_CTL(p) ((p)->offset + (p)->regs[PLL_OFF_USER_CTL]) # define PLL_POST_DIV_SHIFT 8 -# define PLL_POST_DIV_MASK(p) GENMASK((p)->width, 0) +# define PLL_POST_DIV_MASK(p) GENMASK((p)->width - 1, 0) +# define PLL_ALPHA_MSB BIT(15) # define PLL_ALPHA_EN BIT(24) # define PLL_ALPHA_MODE BIT(25) # define PLL_VCO_SHIFT 20 @@ -83,6 +84,29 @@ const u8 clk_alpha_pll_regs[][PLL_OFF_MAX_REGS] = { [PLL_OFF_TEST_CTL_U] = 0x20, [PLL_OFF_STATUS] = 0x24, }, + [CLK_ALPHA_PLL_TYPE_HUAYRA_APSS] = { + [PLL_OFF_L_VAL] = 0x08, + [PLL_OFF_ALPHA_VAL] = 0x10, + [PLL_OFF_USER_CTL] = 0x18, + [PLL_OFF_CONFIG_CTL] = 0x20, + [PLL_OFF_CONFIG_CTL_U] = 0x24, + [PLL_OFF_STATUS] = 0x28, + [PLL_OFF_TEST_CTL] = 0x30, + [PLL_OFF_TEST_CTL_U] = 0x34, + }, + [CLK_ALPHA_PLL_TYPE_HUAYRA_2290] = { + [PLL_OFF_L_VAL] = 0x04, + [PLL_OFF_ALPHA_VAL] = 0x08, + [PLL_OFF_USER_CTL] = 0x0c, + [PLL_OFF_CONFIG_CTL] = 0x10, + [PLL_OFF_CONFIG_CTL_U] = 0x14, + [PLL_OFF_CONFIG_CTL_U1] = 0x18, + [PLL_OFF_TEST_CTL] = 0x1c, + [PLL_OFF_TEST_CTL_U] = 0x20, + [PLL_OFF_TEST_CTL_U1] = 0x24, + [PLL_OFF_OPMODE] = 0x28, + [PLL_OFF_STATUS] = 0x38, + }, [CLK_ALPHA_PLL_TYPE_BRAMMO] = { [PLL_OFF_L_VAL] = 0x04, [PLL_OFF_ALPHA_VAL] = 0x08, @@ -213,10 +237,9 @@ const u8 clk_alpha_pll_regs[][PLL_OFF_MAX_REGS] = { [PLL_OFF_USER_CTL] = 0x18, [PLL_OFF_USER_CTL_U] = 0x1c, [PLL_OFF_CONFIG_CTL] = 0x20, - [PLL_OFF_CONFIG_CTL_U] = 0xff, + [PLL_OFF_STATUS] = 0x28, [PLL_OFF_TEST_CTL] = 0x30, [PLL_OFF_TEST_CTL_U] = 0x34, - [PLL_OFF_STATUS] = 0x28, }, [CLK_ALPHA_PLL_TYPE_STROMER_PLUS] = { [PLL_OFF_L_VAL] = 0x04, @@ -779,6 +802,40 @@ static long clk_alpha_pll_round_rate(struct clk_hw *hw, unsigned long rate, return clamp(rate, min_freq, max_freq); } +void clk_huayra_2290_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap, + const struct alpha_pll_config *config) +{ + u32 val; + + clk_alpha_pll_write_config(regmap, PLL_CONFIG_CTL(pll), config->config_ctl_val); + clk_alpha_pll_write_config(regmap, PLL_CONFIG_CTL_U(pll), config->config_ctl_hi_val); + clk_alpha_pll_write_config(regmap, PLL_CONFIG_CTL_U1(pll), config->config_ctl_hi1_val); + clk_alpha_pll_write_config(regmap, PLL_TEST_CTL(pll), config->test_ctl_val); + clk_alpha_pll_write_config(regmap, PLL_TEST_CTL_U(pll), config->test_ctl_hi_val); + clk_alpha_pll_write_config(regmap, PLL_TEST_CTL_U1(pll), config->test_ctl_hi1_val); + clk_alpha_pll_write_config(regmap, PLL_L_VAL(pll), config->l); + clk_alpha_pll_write_config(regmap, PLL_ALPHA_VAL(pll), config->alpha); + clk_alpha_pll_write_config(regmap, PLL_USER_CTL(pll), config->user_ctl_val); + + /* Set PLL_BYPASSNL */ + regmap_update_bits(regmap, PLL_MODE(pll), PLL_BYPASSNL, PLL_BYPASSNL); + regmap_read(regmap, PLL_MODE(pll), &val); + + /* Wait 5 us between setting BYPASS and deasserting reset */ + udelay(5); + + /* Take PLL out from reset state */ + regmap_update_bits(regmap, PLL_MODE(pll), PLL_RESET_N, PLL_RESET_N); + regmap_read(regmap, PLL_MODE(pll), &val); + + /* Wait 50us for PLL_LOCK_DET bit to go high */ + usleep_range(50, 55); + + /* Enable PLL output */ + regmap_update_bits(regmap, PLL_MODE(pll), PLL_OUTCTRL, PLL_OUTCTRL); +} +EXPORT_SYMBOL_GPL(clk_huayra_2290_pll_configure); + static unsigned long alpha_huayra_pll_calc_rate(u64 prate, u32 l, u32 a) { @@ -1496,8 +1553,8 @@ clk_trion_pll_postdiv_set_rate(struct clk_hw *hw, unsigned long rate, } return regmap_update_bits(regmap, PLL_USER_CTL(pll), - PLL_POST_DIV_MASK(pll) << PLL_POST_DIV_SHIFT, - val << PLL_POST_DIV_SHIFT); + PLL_POST_DIV_MASK(pll) << pll->post_div_shift, + val << pll->post_div_shift); } const struct clk_ops clk_alpha_pll_postdiv_trion_ops = { @@ -1656,7 +1713,7 @@ static int __alpha_pll_trion_set_rate(struct clk_hw *hw, unsigned long rate, if (ret < 0) return ret; - regmap_write(pll->clkr.regmap, PLL_L_VAL(pll), l); + regmap_update_bits(pll->clkr.regmap, PLL_L_VAL(pll), LUCID_EVO_PLL_L_VAL_MASK, l); regmap_write(pll->clkr.regmap, PLL_ALPHA_VAL(pll), a); /* Latch the PLL input */ @@ -1775,6 +1832,58 @@ const struct clk_ops clk_alpha_pll_agera_ops = { }; EXPORT_SYMBOL_GPL(clk_alpha_pll_agera_ops); +/** + * clk_lucid_5lpe_pll_configure - configure the lucid 5lpe pll + * + * @pll: clk alpha pll + * @regmap: register map + * @config: configuration to apply for pll + */ +void clk_lucid_5lpe_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap, + const struct alpha_pll_config *config) +{ + /* + * If the bootloader left the PLL enabled it's likely that there are + * RCGs that will lock up if we disable the PLL below. + */ + if (trion_pll_is_enabled(pll, regmap)) { + pr_debug("Lucid 5LPE PLL is already enabled, skipping configuration\n"); + return; + } + + clk_alpha_pll_write_config(regmap, PLL_L_VAL(pll), config->l); + regmap_write(regmap, PLL_CAL_L_VAL(pll), TRION_PLL_CAL_VAL); + clk_alpha_pll_write_config(regmap, PLL_ALPHA_VAL(pll), config->alpha); + clk_alpha_pll_write_config(regmap, PLL_CONFIG_CTL(pll), + config->config_ctl_val); + clk_alpha_pll_write_config(regmap, PLL_CONFIG_CTL_U(pll), + config->config_ctl_hi_val); + clk_alpha_pll_write_config(regmap, PLL_CONFIG_CTL_U1(pll), + config->config_ctl_hi1_val); + clk_alpha_pll_write_config(regmap, PLL_USER_CTL(pll), + config->user_ctl_val); + clk_alpha_pll_write_config(regmap, PLL_USER_CTL_U(pll), + config->user_ctl_hi_val); + clk_alpha_pll_write_config(regmap, PLL_USER_CTL_U1(pll), + config->user_ctl_hi1_val); + clk_alpha_pll_write_config(regmap, PLL_TEST_CTL(pll), + config->test_ctl_val); + clk_alpha_pll_write_config(regmap, PLL_TEST_CTL_U(pll), + config->test_ctl_hi_val); + clk_alpha_pll_write_config(regmap, PLL_TEST_CTL_U1(pll), + config->test_ctl_hi1_val); + + /* Disable PLL output */ + regmap_update_bits(regmap, PLL_MODE(pll), PLL_OUTCTRL, 0); + + /* Set operation mode to OFF */ + regmap_write(regmap, PLL_OPMODE(pll), PLL_STANDBY); + + /* Place the PLL in STANDBY mode */ + regmap_update_bits(regmap, PLL_MODE(pll), PLL_RESET_N, PLL_RESET_N); +} +EXPORT_SYMBOL_GPL(clk_lucid_5lpe_pll_configure); + static int alpha_pll_lucid_5lpe_enable(struct clk_hw *hw) { struct clk_alpha_pll *pll = to_clk_alpha_pll(hw); @@ -2061,6 +2170,16 @@ static void clk_zonda_pll_disable(struct clk_hw *hw) regmap_write(regmap, PLL_OPMODE(pll), 0x0); } +static void zonda_pll_adjust_l_val(unsigned long rate, unsigned long prate, u32 *l) +{ + u64 remainder, quotient; + + quotient = rate; + remainder = do_div(quotient, prate); + + *l = rate + (u32)(remainder * 2 >= prate); +} + static int clk_zonda_pll_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long prate) { @@ -2077,9 +2196,15 @@ static int clk_zonda_pll_set_rate(struct clk_hw *hw, unsigned long rate, if (ret < 0) return ret; + if (a & PLL_ALPHA_MSB) + zonda_pll_adjust_l_val(rate, prate, &l); + regmap_write(pll->clkr.regmap, PLL_ALPHA_VAL(pll), a); regmap_write(pll->clkr.regmap, PLL_L_VAL(pll), l); + if (!clk_hw_is_enabled(hw)) + return 0; + /* Wait before polling for the frequency latch */ udelay(5); @@ -2114,6 +2239,15 @@ void clk_lucid_evo_pll_configure(struct clk_alpha_pll *pll, struct regmap *regma { u32 lval = config->l; + /* + * If the bootloader left the PLL enabled it's likely that there are + * RCGs that will lock up if we disable the PLL below. + */ + if (trion_pll_is_enabled(pll, regmap)) { + pr_debug("Lucid Evo PLL is already enabled, skipping configuration\n"); + return; + } + lval |= TRION_PLL_CAL_VAL << LUCID_EVO_PLL_CAL_L_VAL_SHIFT; clk_alpha_pll_write_config(regmap, PLL_L_VAL(pll), lval); clk_alpha_pll_write_config(regmap, PLL_ALPHA_VAL(pll), config->alpha); @@ -2490,6 +2624,8 @@ static int clk_alpha_pll_stromer_set_rate(struct clk_hw *hw, unsigned long rate, rate = alpha_pll_round_rate(rate, prate, &l, &a, ALPHA_REG_BITWIDTH); regmap_write(pll->clkr.regmap, PLL_L_VAL(pll), l); + + a <<= ALPHA_REG_BITWIDTH - ALPHA_BITWIDTH; regmap_write(pll->clkr.regmap, PLL_ALPHA_VAL(pll), a); regmap_write(pll->clkr.regmap, PLL_ALPHA_VAL_U(pll), a >> ALPHA_BITWIDTH); @@ -2554,6 +2690,9 @@ static int clk_alpha_pll_stromer_plus_set_rate(struct clk_hw *hw, regmap_write(pll->clkr.regmap, PLL_ALPHA_VAL_U(pll), a >> ALPHA_BITWIDTH); + regmap_update_bits(pll->clkr.regmap, PLL_USER_CTL(pll), + PLL_ALPHA_EN, PLL_ALPHA_EN); + regmap_write(pll->clkr.regmap, PLL_MODE(pll), PLL_BYPASSNL); /* Wait five micro seconds or more */ @@ -2587,3 +2726,33 @@ const struct clk_ops clk_alpha_pll_stromer_plus_ops = { .set_rate = clk_alpha_pll_stromer_plus_set_rate, }; EXPORT_SYMBOL_GPL(clk_alpha_pll_stromer_plus_ops); + +void clk_regera_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap, + const struct alpha_pll_config *config) +{ + clk_alpha_pll_write_config(regmap, PLL_L_VAL(pll), config->l); + clk_alpha_pll_write_config(regmap, PLL_ALPHA_VAL(pll), config->alpha); + clk_alpha_pll_write_config(regmap, PLL_CONFIG_CTL(pll), config->config_ctl_val); + clk_alpha_pll_write_config(regmap, PLL_CONFIG_CTL_U(pll), config->config_ctl_hi_val); + clk_alpha_pll_write_config(regmap, PLL_CONFIG_CTL_U1(pll), config->config_ctl_hi1_val); + clk_alpha_pll_write_config(regmap, PLL_USER_CTL(pll), config->user_ctl_val); + clk_alpha_pll_write_config(regmap, PLL_USER_CTL_U(pll), config->user_ctl_hi_val); + clk_alpha_pll_write_config(regmap, PLL_USER_CTL_U1(pll), config->user_ctl_hi1_val); + clk_alpha_pll_write_config(regmap, PLL_TEST_CTL(pll), config->test_ctl_val); + clk_alpha_pll_write_config(regmap, PLL_TEST_CTL_U(pll), config->test_ctl_hi_val); + clk_alpha_pll_write_config(regmap, PLL_TEST_CTL_U1(pll), config->test_ctl_hi1_val); + + /* Set operation mode to STANDBY */ + regmap_write(regmap, PLL_OPMODE(pll), PLL_STANDBY); +} +EXPORT_SYMBOL_GPL(clk_regera_pll_configure); + +const struct clk_ops clk_alpha_pll_regera_ops = { + .enable = clk_zonda_pll_enable, + .disable = clk_zonda_pll_disable, + .is_enabled = clk_alpha_pll_is_enabled, + .recalc_rate = clk_trion_pll_recalc_rate, + .round_rate = clk_alpha_pll_round_rate, + .set_rate = clk_zonda_pll_set_rate, +}; +EXPORT_SYMBOL_GPL(clk_alpha_pll_regera_ops); |