Like SPI and I2C few GPIO controllers also have multiple chip instances. This patch adds the flag 'DM_UC_FLAG_SEQ_ALIAS' in gpio_uclass driver to control device sequence numbering. By defalut the dev->r_seq for gpio_uclass will alwalys returns -1, which leads the gpio driver probe failure when using the driver with device trees.
Signed-off-by: Bhuvanchandra DV bhuvanchandra.dv@toradex.com --- drivers/gpio/gpio-uclass.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c index 530bb3e..bf982b9 100644 --- a/drivers/gpio/gpio-uclass.c +++ b/drivers/gpio/gpio-uclass.c @@ -757,6 +757,7 @@ static int gpio_pre_remove(struct udevice *dev) UCLASS_DRIVER(gpio) = { .id = UCLASS_GPIO, .name = "gpio", + .flags = DM_UC_FLAG_SEQ_ALIAS, .post_probe = gpio_post_probe, .pre_remove = gpio_pre_remove, .per_device_auto_alloc_size = sizeof(struct gpio_dev_priv),