Pinctrl support of a device tree property "pinctrl-assert-gpios"
under client device node to select function at a board level pin
multiplexer. The pin route is controlled by a GPIO or i2c/spi expander
GPIO.
For i2c/spi expander GPIO, it may be loaded after client device that
set "pinctrl-assert-gpios" property in devicetree. Then the client device's
pin function doesn't work.
So it should add defer probe check for the GPIO pin.
Acked-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
ee07ab7c65