diff options
Diffstat (limited to 'drivers/pinctrl/pinctrl-cy8c95x0.c')
| -rw-r--r-- | drivers/pinctrl/pinctrl-cy8c95x0.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-cy8c95x0.c b/drivers/pinctrl/pinctrl-cy8c95x0.c index 2ecc96691c55..58ca6fac7849 100644 --- a/drivers/pinctrl/pinctrl-cy8c95x0.c +++ b/drivers/pinctrl/pinctrl-cy8c95x0.c @@ -164,6 +164,7 @@ struct cy8c95x0_pinctrl { struct pinctrl_desc pinctrl_desc; char name[32]; unsigned int tpin; + struct gpio_desc *gpio_reset; }; static const struct pinctrl_pin_desc cy8c9560_pins[] = { @@ -1383,6 +1384,20 @@ static int cy8c95x0_probe(struct i2c_client *client) chip->regulator = reg; } + /* bring the chip out of reset if reset pin is provided */ + chip->gpio_reset = devm_gpiod_get_optional(&client->dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(chip->gpio_reset)) { + ret = dev_err_probe(chip->dev, PTR_ERR(chip->gpio_reset), + "Failed to get GPIO 'reset'\n"); + goto err_exit; + } else if (chip->gpio_reset) { + usleep_range(1000, 2000); + gpiod_set_value_cansleep(chip->gpio_reset, 0); + usleep_range(250000, 300000); + + gpiod_set_consumer_name(chip->gpio_reset, "CY8C95X0 RESET"); + } + chip->regmap = devm_regmap_init_i2c(client, &cy8c95x0_i2c_regmap); if (IS_ERR(chip->regmap)) { ret = PTR_ERR(chip->regmap); |