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regulator: pca9450: Clear PRESET_EN bit to fix BUCK1/2/3 voltage setting

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The driver uses the DVS registers PCA9450_REG_BUCKxOUT_DVS0 to set the
voltage for the buck regulators 1, 2 and 3. This has no effect as the
PRESET_EN bit is set by default and therefore the preset values are used
instead, which are set to 850 mV.

To fix this we clear the PRESET_EN bit at time of initialization.

Fixes: 0935ff5f1f ("regulator: pca9450: add pca9450 pmic driver")
Cc: <stable@vger.kernel.org>
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Link: https://lore.kernel.org/r/20210222115229.166620-1-frieder.schrempf@kontron.de
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Frieder Schrempf
2021-02-22 12:52:20 +01:00
committed by Mark Brown
parent dfe03bca8d
commit 98b94b6e38
2 changed files with 11 additions and 0 deletions
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3
include/linux/regulator/pca9450.h
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@@ -147,6 +147,9 @@ enum {
#define BUCK6_FPWM 0x04
#define BUCK6_ENMODE_MASK 0x03
/* PCA9450_REG_BUCK123_PRESET_EN bit */
#define BUCK123_PRESET_EN 0x80
/* PCA9450_BUCK1OUT_DVS0 bits */
#define BUCK1OUT_DVS0_MASK 0x7F
#define BUCK1OUT_DVS0_DEFAULT 0x14