diff options
| -rw-r--r-- | drivers/clk/qcom/clk-alpha-pll.c | 165 | ||||
| -rw-r--r-- | drivers/clk/qcom/clk-alpha-pll.h | 6 |
2 files changed, 170 insertions, 1 deletions
diff --git a/drivers/clk/qcom/clk-alpha-pll.c b/drivers/clk/qcom/clk-alpha-pll.c index 9c0cc1e5789d..9a65d14acf71 100644 --- a/drivers/clk/qcom/clk-alpha-pll.c +++ b/drivers/clk/qcom/clk-alpha-pll.c @@ -58,6 +58,7 @@ #define PLL_TEST_CTL_U(p) ((p)->offset + (p)->regs[PLL_OFF_TEST_CTL_U]) #define PLL_TEST_CTL_U1(p) ((p)->offset + (p)->regs[PLL_OFF_TEST_CTL_U1]) #define PLL_TEST_CTL_U2(p) ((p)->offset + (p)->regs[PLL_OFF_TEST_CTL_U2]) +#define PLL_TEST_CTL_U3(p) ((p)->offset + (p)->regs[PLL_OFF_TEST_CTL_U3]) #define PLL_STATUS(p) ((p)->offset + (p)->regs[PLL_OFF_STATUS]) #define PLL_OPMODE(p) ((p)->offset + (p)->regs[PLL_OFF_OPMODE]) #define PLL_FRAC(p) ((p)->offset + (p)->regs[PLL_OFF_FRAC]) @@ -197,6 +198,23 @@ const u8 clk_alpha_pll_regs[][PLL_OFF_MAX_REGS] = { [PLL_OFF_TEST_CTL_U1] = 0x34, [PLL_OFF_TEST_CTL_U2] = 0x38, }, + [CLK_ALPHA_PLL_TYPE_PONGO_ELU] = { + [PLL_OFF_OPMODE] = 0x04, + [PLL_OFF_STATE] = 0x08, + [PLL_OFF_STATUS] = 0x0c, + [PLL_OFF_L_VAL] = 0x10, + [PLL_OFF_USER_CTL] = 0x14, + [PLL_OFF_USER_CTL_U] = 0x18, + [PLL_OFF_CONFIG_CTL] = 0x1c, + [PLL_OFF_CONFIG_CTL_U] = 0x20, + [PLL_OFF_CONFIG_CTL_U1] = 0x24, + [PLL_OFF_CONFIG_CTL_U2] = 0x28, + [PLL_OFF_TEST_CTL] = 0x2c, + [PLL_OFF_TEST_CTL_U] = 0x30, + [PLL_OFF_TEST_CTL_U1] = 0x34, + [PLL_OFF_TEST_CTL_U2] = 0x38, + [PLL_OFF_TEST_CTL_U3] = 0x3c, + }, [CLK_ALPHA_PLL_TYPE_TAYCAN_ELU] = { [PLL_OFF_OPMODE] = 0x04, [PLL_OFF_STATE] = 0x08, @@ -337,6 +355,12 @@ EXPORT_SYMBOL_GPL(clk_alpha_pll_regs); #define LUCID_EVO_PLL_CAL_L_VAL_SHIFT 16 #define LUCID_OLE_PLL_RINGOSC_CAL_L_VAL_SHIFT 24 +/* PONGO ELU PLL specific setting and offsets */ +#define PONGO_PLL_OUT_MASK GENMASK(1, 0) +#define PONGO_PLL_L_VAL_MASK GENMASK(11, 0) +#define PONGO_XO_PRESENT BIT(10) +#define PONGO_CLOCK_SELECT BIT(12) + /* ZONDA PLL specific */ #define ZONDA_PLL_OUT_MASK 0xf #define ZONDA_STAY_IN_CFA BIT(16) @@ -366,7 +390,8 @@ static int wait_for_pll(struct clk_alpha_pll *pll, u32 mask, bool inverse, if (ret) return ret; - for (count = 200; count > 0; count--) { + /* Pongo PLLs using a 32KHz reference can take upwards of 1500us to lock. */ + for (count = 1500; count > 0; count--) { ret = regmap_read(pll->clkr.regmap, PLL_MODE(pll), &val); if (ret) return ret; @@ -2510,6 +2535,144 @@ const struct clk_ops clk_alpha_pll_reset_lucid_evo_ops = { }; EXPORT_SYMBOL_GPL(clk_alpha_pll_reset_lucid_evo_ops); +static int alpha_pll_pongo_elu_prepare(struct clk_hw *hw) +{ + struct clk_alpha_pll *pll = to_clk_alpha_pll(hw); + struct regmap *regmap = pll->clkr.regmap; + int ret; + + /* Enable PLL intially to one-time calibrate against XO. */ + regmap_write(regmap, PLL_OPMODE(pll), PLL_RUN); + regmap_update_bits(regmap, PLL_MODE(pll), PLL_RESET_N, PLL_RESET_N); + regmap_update_bits(regmap, PLL_MODE(pll), PONGO_XO_PRESENT, PONGO_XO_PRESENT); + + /* Set regmap for wait_for_pll() */ + pll->clkr.regmap = regmap; + ret = wait_for_pll_enable_lock(pll); + if (ret) { + /* Reverse calibration - disable PLL output */ + regmap_update_bits(regmap, PLL_MODE(pll), PLL_OUTCTRL, 0); + return ret; + } + + /* Disable PLL after one-time calibration. */ + regmap_write(regmap, PLL_OPMODE(pll), PLL_STANDBY); + + /* Select internally generated clock. */ + regmap_update_bits(regmap, PLL_MODE(pll), PONGO_CLOCK_SELECT, + PONGO_CLOCK_SELECT); + + return 0; +} + +static int alpha_pll_pongo_elu_enable(struct clk_hw *hw) +{ + struct clk_alpha_pll *pll = to_clk_alpha_pll(hw); + struct regmap *regmap = pll->clkr.regmap; + int ret; + + /* Check if PLL is already enabled */ + if (trion_pll_is_enabled(pll, regmap)) + return 0; + + ret = regmap_update_bits(regmap, PLL_MODE(pll), PLL_RESET_N, PLL_RESET_N); + if (ret) + return ret; + + /* Set operation mode to RUN */ + regmap_write(regmap, PLL_OPMODE(pll), PLL_RUN); + + ret = wait_for_pll_enable_lock(pll); + if (ret) + return ret; + + /* Enable the global PLL outputs */ + ret = regmap_update_bits(regmap, PLL_MODE(pll), PLL_OUTCTRL, PLL_OUTCTRL); + if (ret) + return ret; + + /* Ensure that the write above goes through before returning. */ + mb(); + + return ret; +} + +static void alpha_pll_pongo_elu_disable(struct clk_hw *hw) +{ + struct clk_alpha_pll *pll = to_clk_alpha_pll(hw); + struct regmap *regmap = pll->clkr.regmap; + int ret; + + /* Disable the global PLL output */ + ret = regmap_update_bits(regmap, PLL_MODE(pll), PLL_OUTCTRL, 0); + if (ret) + return; + + /* Place the PLL mode in STANDBY */ + regmap_write(regmap, PLL_OPMODE(pll), PLL_STANDBY); +} + +static unsigned long alpha_pll_pongo_elu_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct clk_alpha_pll *pll = to_clk_alpha_pll(hw); + struct regmap *regmap = pll->clkr.regmap; + u32 l; + + if (regmap_read(regmap, PLL_L_VAL(pll), &l)) + return 0; + + l &= PONGO_PLL_L_VAL_MASK; + + return alpha_pll_calc_rate(parent_rate, l, 0, pll_alpha_width(pll)); +} + +const struct clk_ops clk_alpha_pll_pongo_elu_ops = { + .prepare = alpha_pll_pongo_elu_prepare, + .enable = alpha_pll_pongo_elu_enable, + .disable = alpha_pll_pongo_elu_disable, + .recalc_rate = alpha_pll_pongo_elu_recalc_rate, +}; +EXPORT_SYMBOL_GPL(clk_alpha_pll_pongo_elu_ops); + +void clk_pongo_elu_pll_configure(struct clk_alpha_pll *pll, + struct regmap *regmap, + const struct alpha_pll_config *config) +{ + u32 val; + + regmap_update_bits(regmap, PLL_USER_CTL(pll), PONGO_PLL_OUT_MASK, + PONGO_PLL_OUT_MASK); + + if (trion_pll_is_enabled(pll, regmap)) + return; + + if (regmap_read(regmap, PLL_L_VAL(pll), &val)) + return; + val &= PONGO_PLL_L_VAL_MASK; + if (val) + return; + + 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_CONFIG_CTL_U2(pll), config->config_ctl_hi2_val); + clk_alpha_pll_write_config(regmap, PLL_USER_CTL(pll), + config->user_ctl_val | PONGO_PLL_OUT_MASK); + clk_alpha_pll_write_config(regmap, PLL_USER_CTL_U(pll), config->user_ctl_hi_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_TEST_CTL_U2(pll), config->test_ctl_hi2_val); + clk_alpha_pll_write_config(regmap, PLL_TEST_CTL_U3(pll), config->test_ctl_hi3_val); + + /* Disable PLL output */ + regmap_update_bits(regmap, PLL_MODE(pll), PLL_OUTCTRL, 0); +} +EXPORT_SYMBOL_GPL(clk_pongo_elu_pll_configure); + void clk_rivian_evo_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap, const struct alpha_pll_config *config) { diff --git a/drivers/clk/qcom/clk-alpha-pll.h b/drivers/clk/qcom/clk-alpha-pll.h index 87bd469d9c2c..79aca8525262 100644 --- a/drivers/clk/qcom/clk-alpha-pll.h +++ b/drivers/clk/qcom/clk-alpha-pll.h @@ -27,6 +27,7 @@ enum { CLK_ALPHA_PLL_TYPE_ZONDA_OLE, CLK_ALPHA_PLL_TYPE_LUCID_EVO, CLK_ALPHA_PLL_TYPE_LUCID_OLE, + CLK_ALPHA_PLL_TYPE_PONGO_ELU, CLK_ALPHA_PLL_TYPE_TAYCAN_ELU, CLK_ALPHA_PLL_TYPE_RIVIAN_EVO, CLK_ALPHA_PLL_TYPE_DEFAULT_EVO, @@ -53,6 +54,7 @@ enum { PLL_OFF_TEST_CTL_U, PLL_OFF_TEST_CTL_U1, PLL_OFF_TEST_CTL_U2, + PLL_OFF_TEST_CTL_U3, PLL_OFF_STATE, PLL_OFF_STATUS, PLL_OFF_OPMODE, @@ -138,6 +140,7 @@ struct alpha_pll_config { u32 test_ctl_hi_mask; u32 test_ctl_hi1_val; u32 test_ctl_hi2_val; + u32 test_ctl_hi3_val; u32 main_output_mask; u32 aux_output_mask; u32 aux2_output_mask; @@ -196,6 +199,7 @@ extern const struct clk_ops clk_alpha_pll_postdiv_lucid_evo_ops; #define clk_alpha_pll_postdiv_lucid_ole_ops clk_alpha_pll_postdiv_lucid_evo_ops #define clk_alpha_pll_postdiv_taycan_elu_ops clk_alpha_pll_postdiv_lucid_evo_ops +extern const struct clk_ops clk_alpha_pll_pongo_elu_ops; extern const struct clk_ops clk_alpha_pll_rivian_evo_ops; #define clk_alpha_pll_postdiv_rivian_evo_ops clk_alpha_pll_postdiv_fabia_ops @@ -222,6 +226,8 @@ void clk_lucid_evo_pll_configure(struct clk_alpha_pll *pll, struct regmap *regma const struct alpha_pll_config *config); void clk_lucid_ole_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap, const struct alpha_pll_config *config); +void clk_pongo_elu_pll_configure(struct clk_alpha_pll *pll, struct regmap *regmap, + const struct alpha_pll_config *config); #define clk_taycan_elu_pll_configure(pll, regmap, config) \ clk_lucid_evo_pll_configure(pll, regmap, config) |