Re: [PATCH v4 1/4] gpio: syscon: rockchip: add GRF GPIO support for rk3328
From: Rob Herring
Date: Tue Jul 31 2018 - 15:36:52 EST
On Tue, Jul 31, 2018 at 01:59:19PM +0800, djw@xxxxxxxxxxxxx wrote:
> From: Levin Du <djw@xxxxxxxxxxxxx>
>
> In Rockchip RK3328, the output only GPIO_MUTE pin, originally for codec
> mute control, can also be used for general purpose. It is manipulated by
> the GRF_SOC_CON10 register in GRF. Aside from the GPIO_MUTE pin, the HDMI
> pins can also be set in the same way.
>
> Currently this GRF GPIO controller only supports the mute pin. If needed
> in the future, the HDMI pins support can also be added.
>
> Signed-off-by: Levin Du <djw@xxxxxxxxxxxxx>
>
> ---
>
> Changes in v4:
> - Rename the GPIO binding to "rockchip,rk3328-grf-gpio"
>
> Changes in v3:
> - Change from general gpio-syscon to specific rk3328-gpio-mute
>
> Changes in v2:
> - Rename gpio_syscon10 to gpio_mute in doc
>
> Changes in v1:
> - Refactured for general gpio-syscon usage for Rockchip SoCs.
> - Add doc rockchip,gpio-syscon.txt
>
> .../bindings/gpio/rockchip,rk3328-grf-gpio.txt | 32 ++++++++++++++++++++++
> drivers/gpio/gpio-syscon.c | 31 +++++++++++++++++++++
> 2 files changed, 63 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/gpio/rockchip,rk3328-grf-gpio.txt
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>