[PATCH 2/4] drm/msm/hdmi: Use more DT friendly GPIO names

[Rob Herring]

On Fri, Jul 08, 2016 at 11:25:52AM +0530, Archit Taneja wrote:
> Update the gpio name parsing code to try to search for without the
> "qcom,hdmi-tx-" prefix. The older downstream bindings that expect
> "qcom,hdmi-tx-xyz" or "qcom,hdmi-tx-xyz-gpio" would work as the
> property name would work as before.

Why?

> Update the binding doc. Add an entry for the missing hpd and lpm
> gpios.
> 
> Cc: Rob Herring <robh at kernel.org>
> Cc: devicetree at vger.kernel.org
> 
> Signed-off-by: Archit Taneja <architt at codeaurora.org>
> ---
>  Documentation/devicetree/bindings/display/msm/hdmi.txt |  6 ++++--
>  drivers/gpu/drm/msm/hdmi/hdmi.c                        | 16 ++++++++++++++++
>  2 files changed, 20 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/msm/hdmi.txt b/Documentation/devicetree/bindings/display/msm/hdmi.txt
> index b63f614..4da1abd 100644
> --- a/Documentation/devicetree/bindings/display/msm/hdmi.txt
> +++ b/Documentation/devicetree/bindings/display/msm/hdmi.txt
> @@ -23,8 +23,10 @@ Required properties:
>  - phy-names: the name of the corresponding PHY device
>  
>  Optional properties:
> -- qcom,hdmi-tx-mux-en-gpio: hdmi mux enable pin
> -- qcom,hdmi-tx-mux-sel-gpio: hdmi mux select pin
> +- hpd-gpio: hdmi hpd pin

hpd-gpios is the somewhat standard name.

> +- mux-en-gpio: hdmi mux enable pin
> +- mux-sel-gpio: hdmi mux select pin
> +- mux-lpm-gpio: hdmi mux lpm pin

These look pretty QCom specific and should keep the vendor prefix.

I understand why you don't have '-gpios', but if we change these they 
should use the preferred form.

Rob