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pinctrl: at91-pio4: Add pinctrl driver

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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>
This commit is contained in:
Wenyou Yang
2016-07-20 17:16:27 +08:00
committed by Andreas Bießmann
parent ee3311db1c
commit ac72e174f9
3 changed files with 190 additions and 0 deletions
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7
drivers/pinctrl/Kconfig
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@@ -141,6 +141,13 @@ config ROCKCHIP_RK3288_PINCTRL
definitions and pin control functions for each available multiplex
function.
config PINCTRL_AT91PIO4
bool "AT91 PIO4 pinctrl driver"
depends on DM
help
This option is to enable the AT91 pinctrl driver for AT91 PIO4
controller which is available on SAMA5D2 SoC.
config PINCTRL_SANDBOX
bool "Sandbox pinctrl driver"
depends on SANDBOX