linux-kernel - Re: [PATCH 6/15] dt-bindings: display: sun4i: Add HDMI display bindings

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Date:   Wed, 3 May 2017 11:27:20 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc:     Mike Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Chen-Yu Tsai <wens@...e.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Daniel Vetter <daniel.vetter@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Mark Rutland <mark.rutland@....com>,
        Rob Herring <robh+dt@...nel.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-sunxi <linux-sunxi@...glegroups.com>
Subject: Re: [PATCH 6/15] dt-bindings: display: sun4i: Add HDMI display bindings

On Tue, Mar 7, 2017 at 4:56 PM, Maxime Ripard
<maxime.ripard@...e-electrons.com> wrote:
> One of the possible output of the display pipeline, on the SoCs that have
> it, is the HDMI controller.
>
> Add a binding for it.
>
> Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
> ---
>  Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt | 21 +++++++-
>  1 file changed, 21 insertions(+), 0 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
> index b82c00449468..4b280672658e 100644
> --- a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
> +++ b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
> @@ -4,6 +4,27 @@ Allwinner A10 Display Pipeline
>  The Allwinner A10 Display pipeline is composed of several components
>  that are going to be documented below:
>
> +HDMI Encoder
> +------------
> +
> +The HDMI Encoder supports the HDMI video and audio outputs, and does
> +CEC. It is one end of the pipeline.
> +
> +Required properties:
> +  - compatible: value must be one of:
> +    * allwinner,sun5i-a10s-hdmi
> +  - reg: base address and size of memory-mapped region
> +  - clocks: phandles to the clocks feeding the HDMI encoder
> +    * ahb: the HDMI interface clock
> +    * mod: the HDMI module clock
> +    * pll-0: the first video PLL
> +    * pll-1: the second video PLL
> +  - clock-names: the clock names mentioned above

The audio part needs a DMA handle. May we add this from day one?

Thanks
ChenYu

> +
> +  - ports: A ports node with endpoint definitions as defined in
> +    Documentation/devicetree/bindings/media/video-interfaces.txt. The
> +    first port should be the input endpoint.
> +
>  TV Encoder
>  ----------
>
> --
> git-series 0.8.11