regulator: pf9453: remove low power mode

Remove low power mode support to align with the Rev.1.0 -- 25 June 2025
datasheet, which no longer support this feature.

Datasheet is available at
https://www.nxp.com/docs/en/data-sheet/PF9453.pdf.

Signed-off-by: Joy Zou <joy.zou@nxp.com>
Link: https://patch.msgid.link/20251103-b4-next-pf9453-v1-2-a025d536eee1@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/regulator/pf9453-regulator.c b/drivers/regulator/pf9453-regulator.c
index d522715a7c74908b39880ce9f0bfc252a4dd4ba2..fded3e65b856f51be97d9d4b307a2291d247a21a 100644 (file)
--- a/drivers/regulator/pf9453-regulator.c
+++ b/drivers/regulator/pf9453-regulator.c
@@ -119,7 +119,6 @@ enum {
 #define LDO_ENMODE_ONREQ_STBY_DPSTBY   0x03
 
 /* PF9453_REG_BUCK1_CTRL bits */
-#define BUCK1_LPMODE                   0x30
 #define BUCK1_AD                       0x08
 #define BUCK1_FPWM                     0x04
 #define BUCK1_ENMODE_MASK              GENMASK(1, 0)
@@ -130,19 +129,16 @@ enum {
 #define BUCK2_RAMP_12P5MV              0x1
 #define BUCK2_RAMP_6P25MV              0x2
 #define BUCK2_RAMP_3P125MV             0x3
-#define BUCK2_LPMODE                   0x30
 #define BUCK2_AD                       0x08
 #define BUCK2_FPWM                     0x04
 #define BUCK2_ENMODE_MASK              GENMASK(1, 0)
 
 /* PF9453_REG_BUCK3_CTRL bits */
-#define BUCK3_LPMODE                   0x30
 #define BUCK3_AD                       0x08
 #define BUCK3_FPWM                     0x04
 #define BUCK3_ENMODE_MASK              GENMASK(1, 0)
 
 /* PF9453_REG_BUCK4_CTRL bits */
-#define BUCK4_LPMODE                   0x30
 #define BUCK4_AD                       0x08
 #define BUCK4_FPWM                     0x04
 #define BUCK4_ENMODE_MASK              GENMASK(1, 0)
@@ -535,14 +531,6 @@ static int buck_set_dvs(const struct regulator_desc *desc,
                }
        }
 
-       if (ret == 0) {
-               struct pf9453_regulator_desc *regulator = container_of(desc,
-                                       struct pf9453_regulator_desc, desc);
-
-               /* Enable DVS control through PMIC_STBY_REQ for this BUCK */
-               ret = pf9453_pmic_write(pf9453, regulator->desc.enable_reg,
-                                       BUCK2_LPMODE, BUCK2_LPMODE);
-       }
        return ret;
 }