On Mon, Apr 25, 2022 at 10:01:24AM +0200, Krzysztof Kozlowski wrote: > On 25/04/2022 09:58, ChiYuan Huang wrote: > >> > >> - priv->enable_gpios = devm_gpiod_get_array_optional(&i2c->dev, "enable", GPIOD_OUT_HIGH); > >> - if (IS_ERR(priv->enable_gpios)) { > >> - dev_err(&i2c->dev, "Failed to get gpios\n"); > >> - return PTR_ERR(priv->enable_gpios); > >> + for (i = 0; i < DSV_OUT_MAX; i++) { > >> + priv->enable_gpios[i] = devm_gpiod_get_index_optional(&i2c->dev, > >> + "enable", > >> + i, > >> + GPIOD_OUT_HIGH); > >> + if (IS_ERR(priv->enable_gpios[i])) { > >> + dev_err(&i2c->dev, "Failed to get gpios\n"); > >> + return PTR_ERR(priv->enable_gpios[i]); > >> + } > >> } > > You can directly removed all about 'enable-gpios' in probe phase. > > Just keep of_parse_cb to get per regulator 'enable' gpio. > > We cannot, it would break the ABI and make the change backwards > incompatible. > Almost forget the backward compatibility. I'm testing it right now. After that I'll add 'Tested-by' tag. Thanks. > > Best regards, > Krzysztof