From 1222d8fe578cd28a6c7f5e4e6c6b664c56abfdc0 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Thu, 11 Dec 2014 14:40:21 +0100 Subject: [PATCH] regulator: s2mps11: Fix dw_mmc failure on Gear 2 Invalid buck4 configuration for linear mapping of voltage in S2MPS14 regulators caused boot failure on Gear 2 (dw_mmc-exynos): [ 3.569137] EXT4-fs (mmcblk0p15): mounted filesystem with ordered data mode. Opts: (null) [ 3.571716] VFS: Mounted root (ext4 filesystem) readonly on device 179:15. [ 3.629842] mmcblk0: error -110 sending status command, retrying [ 3.630244] mmcblk0: error -110 sending status command, retrying [ 3.636292] mmcblk0: error -110 sending status command, aborting Buck4 voltage regulator has different minimal voltage value than other bucks. Commit merging multiple regulator description macros caused to use linear_min_sel from buck[1235] regulators as value for buck4. This lead to lower voltage of buck4 than required. Output of the buck4 is used internally as power source for LDO{3,4,7,11,19,20,21,23}. On Gear 2 board LDO11 is used as MMC regulator (V_EMMC_1.8V). Fixes: 5a867cf28893 ("regulator: s2mps11: Optimize the regulator description macro") Signed-off-by: Krzysztof Kozlowski Signed-off-by: Mark Brown Cc: --- drivers/regulator/s2mps11.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/regulator/s2mps11.c b/drivers/regulator/s2mps11.c index adab82d..697be11 100644 --- a/drivers/regulator/s2mps11.c +++ b/drivers/regulator/s2mps11.c @@ -479,7 +479,7 @@ static struct regulator_ops s2mps14_reg_ops = { .enable_mask = S2MPS14_ENABLE_MASK \ } -#define regulator_desc_s2mps14_buck(num, min, step) { \ +#define regulator_desc_s2mps14_buck(num, min, step, min_sel) { \ .name = "BUCK"#num, \ .id = S2MPS14_BUCK##num, \ .ops = &s2mps14_reg_ops, \ @@ -488,7 +488,7 @@ static struct regulator_ops s2mps14_reg_ops = { .min_uV = min, \ .uV_step = step, \ .n_voltages = S2MPS14_BUCK_N_VOLTAGES, \ - .linear_min_sel = S2MPS14_BUCK1235_START_SEL, \ + .linear_min_sel = min_sel, \ .ramp_delay = S2MPS14_BUCK_RAMP_DELAY, \ .vsel_reg = S2MPS14_REG_B1CTRL2 + (num - 1) * 2, \ .vsel_mask = S2MPS14_BUCK_VSEL_MASK, \ @@ -522,11 +522,16 @@ static const struct regulator_desc s2mps14_regulators[] = { regulator_desc_s2mps14_ldo(23, MIN_800_MV, STEP_25_MV), regulator_desc_s2mps14_ldo(24, MIN_1800_MV, STEP_25_MV), regulator_desc_s2mps14_ldo(25, MIN_1800_MV, STEP_25_MV), - regulator_desc_s2mps14_buck(1, MIN_600_MV, STEP_6_25_MV), - regulator_desc_s2mps14_buck(2, MIN_600_MV, STEP_6_25_MV), - regulator_desc_s2mps14_buck(3, MIN_600_MV, STEP_6_25_MV), - regulator_desc_s2mps14_buck(4, MIN_1400_MV, STEP_12_5_MV), - regulator_desc_s2mps14_buck(5, MIN_600_MV, STEP_6_25_MV), + regulator_desc_s2mps14_buck(1, MIN_600_MV, STEP_6_25_MV, + S2MPS14_BUCK1235_START_SEL), + regulator_desc_s2mps14_buck(2, MIN_600_MV, STEP_6_25_MV, + S2MPS14_BUCK1235_START_SEL), + regulator_desc_s2mps14_buck(3, MIN_600_MV, STEP_6_25_MV, + S2MPS14_BUCK1235_START_SEL), + regulator_desc_s2mps14_buck(4, MIN_1400_MV, STEP_12_5_MV, + S2MPS14_BUCK4_START_SEL), + regulator_desc_s2mps14_buck(5, MIN_600_MV, STEP_6_25_MV, + S2MPS14_BUCK1235_START_SEL), }; static int s2mps14_pmic_enable_ext_control(struct s2mps11_info *s2mps11, -- 2.7.4