diff options
Diffstat (limited to 'drivers/regulator/pca9450-regulator.c')
| -rw-r--r-- | drivers/regulator/pca9450-regulator.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/regulator/pca9450-regulator.c b/drivers/regulator/pca9450-regulator.c index cb29421d745a..833d398c6aa2 100644 --- a/drivers/regulator/pca9450-regulator.c +++ b/drivers/regulator/pca9450-regulator.c @@ -5,6 +5,7 @@ */ #include <linux/err.h> +#include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/interrupt.h> #include <linux/kernel.h> @@ -32,6 +33,7 @@ struct pca9450_regulator_desc { struct pca9450 { struct device *dev; struct regmap *regmap; + struct gpio_desc *sd_vsel_gpio; enum pca9450_chip_type type; unsigned int rcnt; int irq; @@ -795,6 +797,26 @@ static int pca9450_i2c_probe(struct i2c_client *i2c, return ret; } + /* Set reset behavior on assertion of WDOG_B signal */ + ret = regmap_update_bits(pca9450->regmap, PCA9450_REG_RESET_CTRL, + WDOG_B_CFG_MASK, WDOG_B_CFG_COLD_LDO12); + if (ret) { + dev_err(&i2c->dev, "Failed to set WDOG_B reset behavior\n"); + return ret; + } + + /* + * The driver uses the LDO5CTRL_H register to control the LDO5 regulator. + * This is only valid if the SD_VSEL input of the PMIC is high. Let's + * check if the pin is available as GPIO and set it to high. + */ + pca9450->sd_vsel_gpio = gpiod_get_optional(pca9450->dev, "sd-vsel", GPIOD_OUT_HIGH); + + if (IS_ERR(pca9450->sd_vsel_gpio)) { + dev_err(&i2c->dev, "Failed to get SD_VSEL GPIO\n"); + return ret; + } + dev_info(&i2c->dev, "%s probed.\n", type == PCA9450_TYPE_PCA9450A ? "pca9450a" : "pca9450bc"); |