Re: [PATCH 6/7] arm64: dts: renesas: eagle: Add LVDS decoder

From: Laurent Pinchart
Date: Fri Apr 06 2018 - 09:49:33 EST


Hi Jacopo,

Thank you for the patch.

On Friday, 6 April 2018 16:08:11 EEST Jacopo Mondi wrote:
> The R-Car V3M Eagle board includes a transparent THC63LVD1024 LVDS
> decoder, connected to the on-chip LVDS encoder output on one side
> and to the not-yet-described HDMI encoder ADV7511W on the other one.
>
> As the decoder does not need any configuration it has been so-far
> omitted from DTS. Now that a driver is available, describe it in DT
> as well.

As explained in my review of patch 5/7, I'd merge 5/7, 6/7 and 7/7 all
together as there's little use for enabling the LVDS decoder if there's
nothing connected at its output. Note also how this patch alone, without 7/7,
wouldn't comply with the LVDS decoder DT bindings that state that port@2 is
mandatory.

> Signed-off-by: Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>
> Reviewed-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
> ---
> arch/arm64/boot/dts/renesas/r8a77970-eagle.dts | 29 +++++++++++++++++++++++
> 1 file changed, 29 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts
> b/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts index 144b847..9d0e65d
> 100644
> --- a/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts
> +++ b/arch/arm64/boot/dts/renesas/r8a77970-eagle.dts
> @@ -31,6 +31,23 @@
> /* first 128MB is reserved for secure area. */
> reg = <0x0 0x48000000 0x0 0x38000000>;
> };
> +
> + thc63lvd1024: lvds-decoder {
> + compatible = "thine,thc63lvd1024";
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> +
> + thc63lvd1024_in: endpoint {
> + remote-endpoint = <&lvds0_out>;
> + };
> + };
> + };
> + };
> };
>
> &avb {
> @@ -104,3 +121,15 @@
> pinctrl-names = "default";
> status = "okay";
> };
> +
> +&lvds0 {
> + status = "okay";
> +
> + ports {
> + port@1 {
> + lvds0_out: endpoint {
> + remote-endpoint = <&thc63lvd1024_in>;
> + };
> + };
> + };
> +};

--
Regards,

Laurent Pinchart