[PATCH v2 1/2] regulator: pca9450: Use LDO5 low-control enable mask

From: Fabio Estevam

Date: Mon Aug 17 2026 - 21:41:47 EST


From: Fabio Estevam <festevam@xxxxxxxxxxxx>

LDO5 has voltage-selection fields in both LDO5CTRL_L and LDO5CTRL_H,
selected by the SD_VSEL pin. Its ENMODE field, however, is only in
LDO5CTRL_L.

The regulator descriptors correctly use LDO5CTRL_L as enable_reg, but
use the misleading LDO5H_EN_MASK name for enable_mask. Both mask
definitions have the same value, so this causes no functional problem.

Use LDO5L_EN_MASK in all LDO5 descriptors and remove the unused
LDO5H_EN_MASK definition.

Signed-off-by: Fabio Estevam <festevam@xxxxxxxxxxxx>
---
Changes since v1:
- New patch clarifying that the LDO5 ENMODE field is in LDO5CTRL_L.

drivers/regulator/pca9450-regulator.c | 6 +++---
include/linux/regulator/pca9450.h | 1 -
2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/regulator/pca9450-regulator.c b/drivers/regulator/pca9450-regulator.c
index c41db70fa052..93d0af7f7eda 100644
--- a/drivers/regulator/pca9450-regulator.c
+++ b/drivers/regulator/pca9450-regulator.c
@@ -621,7 +621,7 @@ static struct pca9450_regulator_desc pca9450a_regulators[] = {
.vsel_reg = PCA9450_REG_LDO5CTRL_H,
.vsel_mask = LDO5HOUT_MASK,
.enable_reg = PCA9450_REG_LDO5CTRL_L,
- .enable_mask = LDO5H_EN_MASK,
+ .enable_mask = LDO5L_EN_MASK,
.owner = THIS_MODULE,
},
},
@@ -866,7 +866,7 @@ static struct pca9450_regulator_desc pca9450bc_regulators[] = {
.vsel_reg = PCA9450_REG_LDO5CTRL_H,
.vsel_mask = LDO5HOUT_MASK,
.enable_reg = PCA9450_REG_LDO5CTRL_L,
- .enable_mask = LDO5H_EN_MASK,
+ .enable_mask = LDO5L_EN_MASK,
.owner = THIS_MODULE,
},
},
@@ -1086,7 +1086,7 @@ static struct pca9450_regulator_desc pca9451a_regulators[] = {
.vsel_reg = PCA9450_REG_LDO5CTRL_H,
.vsel_mask = LDO5HOUT_MASK,
.enable_reg = PCA9450_REG_LDO5CTRL_L,
- .enable_mask = LDO5H_EN_MASK,
+ .enable_mask = LDO5L_EN_MASK,
.owner = THIS_MODULE,
},
},
diff --git a/include/linux/regulator/pca9450.h b/include/linux/regulator/pca9450.h
index 0df8b3c48082..2aa73624d0b8 100644
--- a/include/linux/regulator/pca9450.h
+++ b/include/linux/regulator/pca9450.h
@@ -210,7 +210,6 @@ enum {
#define LDO5L_EN_MASK 0xC0
#define LDO5LOUT_MASK 0x0F

-#define LDO5H_EN_MASK 0xC0
#define LDO5HOUT_MASK 0x0F

/* PCA9450_REG_IRQ bits */
--
2.43.0