Currently in _dm_gpio_set_flags() when set_flags ops is not implemented direction_output()/_input() is used, but pull up/down is not supported by these ops.

Signed-off-by: Zixun LI admin@hifiphile.com --- We have updated our AT91 BSP to use DM, on field testing few boards went into a failed state due to gpio pullup is not enabled. A floating gpio doesn't always fail and can sometimes be hard to diagostic. --- drivers/gpio/gpio-uclass.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c index 712119c341..a58513c946 100644 --- a/drivers/gpio/gpio-uclass.c +++ b/drivers/gpio/gpio-uclass.c @@ -661,6 +661,9 @@ static int _dm_gpio_set_flags(struct gpio_desc *desc, ulong flags) if (ops->set_flags) { ret = ops->set_flags(dev, desc->offset, flags); } else { + if (flags & GPIOD_MASK_PULL) + return -EINVAL; + if (flags & GPIOD_IS_OUT) { bool value = flags & GPIOD_IS_OUT_ACTIVE;