Wenyou Yang ac72e174f9
pinctrl: at91-pio4: Add pinctrl driver ...
AT91 PIO4 controller is a combined gpio-controller, pin-mux and
pin-config module. The peripheral's pins are assigned through
per-pin based muxing logic.
The pin configuration is performed on specific registers which
are shared along with the gpio controller. So regard the pinctrl
device as a child of atmel_pio4 device.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com >
Reviewed-by: Simon Glass <sjg@chromium.org >
Reviewed-by: Andreas Bießmann <andreas@biessmann.org >
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