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The EN pin is asserted high for device to operate. Signed-off-by: Alexis Czezar Torreno --- drivers/hwmon/pmbus/max20830.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/hwmon/pmbus/max20830.c b/drivers/hwmon/pmbus/max20830.c index cb2c23672166d641852199ca07eb716924f4f286..cb3a39d747edee3aefb0fb4051ef957436b3c15b 100644 --- a/drivers/hwmon/pmbus/max20830.c +++ b/drivers/hwmon/pmbus/max20830.c @@ -6,6 +6,7 @@ */ #include +#include #include #include #include @@ -29,8 +30,14 @@ static struct pmbus_driver_info max20830_info = { static int max20830_probe(struct i2c_client *client) { u8 buf[I2C_SMBUS_BLOCK_MAX + 1] = {}; + struct gpio_desc *enable_gpio; int ret; + enable_gpio = devm_gpiod_get_optional(&client->dev, "enable", GPIOD_OUT_HIGH); + if (IS_ERR(enable_gpio)) + return dev_err_probe(&client->dev, PTR_ERR(enable_gpio), + "Failed to get enable GPIO\n"); + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_READ_BLOCK_DATA) && !i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_READ_I2C_BLOCK)) return -ENODEV; -- 2.34.1