[PATCH v7 4/8] drm/sunxi: Add DT bindings documentation of Allwinner HDMI
Laurent Pinchart
laurent.pinchart at ideasonboard.com
Tue Nov 29 10:46:22 PST 2016
Hi Jean-François,
Thank you for the patch.
On Tuesday 29 Nov 2016 10:08:25 Jean-Francois Moine wrote:
> Signed-off-by: Jean-Francois Moine <moinejf at free.fr>
> ---
> .../devicetree/bindings/display/sunxi/hdmi.txt | 56 +++++++++++++++++++
> 1 file changed, 56 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/display/sunxi/hdmi.txt
>
> diff --git a/Documentation/devicetree/bindings/display/sunxi/hdmi.txt
> b/Documentation/devicetree/bindings/display/sunxi/hdmi.txt new file mode
> 100644
> index 0000000..1e107cb
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/sunxi/hdmi.txt
> @@ -0,0 +1,56 @@
> +Allwinner HDMI Transmitter
> +==========================
> +
> +The Allwinner HDMI transmitters are included in the SoCs.
> +They support audio and video.
> +
> +Required properties:
> + - compatible : should be one of
> + "allwinner,sun8i-a83t-hdmi"
> + "allwinner,sun8i-h3-hdmi"
> + - reg: base address and size of the I/O memory
> + - clocks : phandles to the HDMI clocks as described in
> + Documentation/devicetree/bindings/clock/clock-bindings.txt
> + - clock-names : must be
> + "bus" : bus gate
> + "clock" : streaming clock
> + "ddc-clock" : DDC clock
> + - resets : One or two phandles to the HDMI resets
> + - reset-names : when 2 phandles, must be
> + "hdmi0" and "hdmi1"
> + - #address-cells : should be <1>
> + - #size-cells : should be <0>
> +
> +Required nodes:
> + - port: Audio and video input port nodes with endpoint definitions
> + as defined in Documentation/devicetree/bindings/graph.txt.
> + port at 0 is video and port at 1 is audio.
> +
> +Example:
> +
> + hdmi: hdmi at 01ee0000 {
> + compatible = "allwinner,sun8i-a83t-hdmi";
> + reg = <0x01ee0000 0x20000>;
> + clocks = <&ccu CLK_BUS_HDMI>, <&ccu CLK_HDMI>,
> + <&ccu CLK_HDMI_DDC>;
> + clock-names = "bus", "clock", "ddc-clock";
> + resets = <&ccu RST_HDMI0>, <&ccu RST_HDMI1>;
> + reset-names = "hdmi0", "hdmi1";
> + pinctrl-names = "default";
> + pinctrl-0 = <&hdmi_pins_a>;
> + status = "disabled";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + port at 0 { /* video */
> + reg = <0>;
> + hdmi_tcon1: endpoint {
> + remote-endpoint = <&tcon1_hdmi>;
> + };
> + };
> + port at 1 { /* audio */
> + reg = <1>;
> + hdmi_i2s2: endpoint {
> + remote-endpoint = <&i2s2_hdmi>;
> + };
> + };
You need a third port for the HDMI encoder output, connected to an HDMI
connector DT node.
> + };
--
Regards,
Laurent Pinchart
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