[PATCH 2/2] regulator: mt6363: Fix the registers of the VSRAM CPU and APU LDOs

["GIBEOM LEE (이기범)" <rtx4060@gmail.com>]

VSRAM_CPUB, VSRAM_CPUM, VSRAM_CPUL and VSRAM_APU have a register of their
own for the enable (bit 0) and low power (bit 1) bits, which the header
defines as MT6363_RG_LDO_VSRAM_*_ADDR. The driver does not use it:
MT6363_LDO_L() takes the registers of the BUCK1 group, which is right only
for the VSRAM_{DIGRF,MDFE,MODEM} LDOs of MT6363_LDO_L_SC().

Bit 0 of the BUCK1 enable register is VS1 and bit 1 of the BUCK1 low power
register is VS3. So disabling one of these LDOs disables VS1, their state
is the state of VS1, and asking for their low power mode puts VS3 in it.
The LDOs themselves are never switched.

Use the register of the LDO, as MediaTek's driver does.

Fixes: 3c36965df808 ("regulator: Add support for MediaTek MT6363 SPMI PMIC Regulators")
Assisted-by: Claude:claude-opus-5-5
Signed-off-by: GIBEOM LEE (이기범) <rtx4060@gmail.com>
---
 drivers/regulator/mt6363-regulator.c | 25 ++++++++++++++-----------
 1 file changed, 14 insertions(+), 11 deletions(-)

diff --git a/drivers/regulator/mt6363-regulator.c b/drivers/regulator/mt6363-regulator.c
index cc2e841..c5de049 100644
--- a/drivers/regulator/mt6363-regulator.c
+++ b/drivers/regulator/mt6363-regulator.c
@@ -147,7 +147,7 @@ struct mt6363_regulator_info {
 }
 
 #define MT6363_LDO_LINEAR_OPS(match, vreg, in_sup, vops, min, max,	\
-			      step, buck_reg, ocp_intn)			\
+			      step, en_reg, lp_reg, ocp_intn)		\
 [MT6363_ID_##vreg] = {							\
 	.desc = {							\
 		.name = match,						\
@@ -160,13 +160,13 @@ struct mt6363_regulator_info {
 		.n_voltages = (max - min) / step + 1,			\
 		.min_uV = min,						\
 		.uV_step = step,					\
-		.enable_reg = MT6363_RG_##buck_reg##_EN_ADDR,		\
+		.enable_reg = en_reg,					\
 		.enable_mask = BIT(MT6363_RG_LDO_##vreg##_EN_BIT),	\
 		.vsel_reg = MT6363_RG_LDO_##vreg##_VOSEL_ADDR,		\
 		.vsel_mask = MT6363_RG_LDO_##vreg##_VOSEL_MASK,		\
 		.of_map_mode = mt6363_map_mode,				\
 	},								\
-	.lp_mode_reg = MT6363_RG_##buck_reg##_LP_ADDR,			\
+	.lp_mode_reg = lp_reg,						\
 	.lp_mode_mask = BIT(MT6363_RG_LDO_##vreg##_LP_BIT),		\
 	.hw_lp_mode_reg = MT6363_LDO_##vreg##_HW_LP_MODE,		\
 	.hw_lp_mode_mask = 0x4,						\
@@ -176,12 +176,15 @@ struct mt6363_regulator_info {
 #define MT6363_LDO_L_SC(match, vreg, inp, min, max, step, buck_reg,	\
 			ocp_intn)					\
 	MT6363_LDO_LINEAR_OPS(match, vreg, inp, mt6363_vreg_setclr_ops,	\
-			      min, max, step, buck_reg, ocp_intn)
+			      min, max, step,				\
+			      MT6363_RG_##buck_reg##_EN_ADDR,		\
+			      MT6363_RG_##buck_reg##_LP_ADDR, ocp_intn)
 
-#define MT6363_LDO_L(match, vreg, inp, min, max, step, buck_reg,	\
-		     ocp_intn)						\
+#define MT6363_LDO_L(match, vreg, inp, min, max, step, ocp_intn)	\
 	MT6363_LDO_LINEAR_OPS(match, vreg, inp, mt6363_ldo_linear_ops,	\
-			      min, max, step, buck_reg, ocp_intn)
+			      min, max, step,				\
+			      MT6363_RG_LDO_##vreg##_ADDR,		\
+			      MT6363_RG_LDO_##vreg##_ADDR, ocp_intn)
 
 #define MT6363_LDO_LINEAR_CAL_OPS(match, vreg, in_sup, vops, vrnum,	\
 				  ocp_intn)				\
@@ -754,10 +757,10 @@ static struct mt6363_regulator_info mt6363_regulators[] = {
 	MT6363_LDO_VT("vio0p75", VIO075, "vs1-ldo1", 5, 36),
 	MT6363_LDO_VT("vio18", VIO18, "vs1-ldo2", 3, 35),
 	MT6363_LDO_VT("vm18", VM18, "vs1-ldo1", 4, 40),
-	MT6363_LDO_L("vsram-apu", VSRAM_APU, "vs3-ldo1", 400000, 1193750, 6250, BUCK1, 30),
-	MT6363_LDO_L("vsram-cpub", VSRAM_CPUB, "vs2-ldo1", 400000, 1193750, 6250, BUCK1, 27),
-	MT6363_LDO_L("vsram-cpum", VSRAM_CPUM, "vs2-ldo1", 400000, 1193750, 6250, BUCK1, 28),
-	MT6363_LDO_L("vsram-cpul", VSRAM_CPUL, "vs2-ldo2", 400000, 1193750, 6250, BUCK1, 29),
+	MT6363_LDO_L("vsram-apu", VSRAM_APU, "vs3-ldo1", 400000, 1193750, 6250, 30),
+	MT6363_LDO_L("vsram-cpub", VSRAM_CPUB, "vs2-ldo1", 400000, 1193750, 6250, 27),
+	MT6363_LDO_L("vsram-cpum", VSRAM_CPUM, "vs2-ldo1", 400000, 1193750, 6250, 28),
+	MT6363_LDO_L("vsram-cpul", VSRAM_CPUL, "vs2-ldo2", 400000, 1193750, 6250, 29),
 	MT6363_LDO_L_SC("vsram-digrf", VSRAM_DIGRF, "vs3-ldo1", 400000, 1193750, 6250, BUCK1, 23),
 	MT6363_LDO_L_SC("vsram-mdfe", VSRAM_MDFE, "vs3-ldo1", 400000, 1193750, 6250, BUCK1, 24),
 	MT6363_LDO_L_SC("vsram-modem", VSRAM_MODEM, "vs3-ldo2", 400000, 1193750, 6250, BUCK1, 25),