Hi Ulrich,
Thank you for the patch.
On Tuesday, 15 May 2018 15:20:38 EEST Ulrich Hecht wrote:
> From: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>
>
> The r8a77995 D3 platform has 2 LVDS channels connected to the DU.
>
> Signed-off-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>
> [uli: moved lvds* into the soc node, added PM domains, resets]
> Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@xxxxxxxxx>
> ---
> arch/arm64/boot/dts/renesas/r8a77995.dtsi | 56 ++++++++++++++++++++++++++++
> 1 file changed, 56 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/renesas/r8a77995.dtsi
> b/arch/arm64/boot/dts/renesas/r8a77995.dtsi index ba98865..8e78110d 100644
> --- a/arch/arm64/boot/dts/renesas/r8a77995.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a77995.dtsi
> @@ -757,12 +757,68 @@
> port@1 {
> reg = <1>;
> du_out_lvds0: endpoint {
> + remote-endpoint = <&lvds0_in>;
> };
> };
>
> port@2 {
> reg = <2>;
> du_out_lvds1: endpoint {
> + remote-endpoint = <&lvds1_in>;
> + };
> + };
> + };
> + };
> +
> + lvds0: lvds-encoder@feb90000 {
> + compatible = "renesas,r8a77995-lvds";
> + reg = <0 0xfeb90000 0 0x20>;
> + clocks = <&cpg CPG_MOD 727>;
> + power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
> + resets = <&cpg 727>;
> + status = "disabled";
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> + lvds0_in: endpoint {
> + remote-endpoint = <&du_out_lvds0>;
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> + lvds0_out: endpoint {
> + };
> + };
> + };
> + };
> +
> + lvds1: lvds-encoder@feb90100 {
> + compatible = "renesas,r8a77995-lvds";
> + reg = <0 0xfeb90100 0 0x20>;
> + clocks = <&cpg CPG_MOD 727>;
> + power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
> + resets = <&cpg 727>;
While there seems to be a single clock for both LVDS encoders, it appears that
two separate reset lines are used.
Apart from that,
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Given that the LVDS encoder driver isn't functional yet I wouldn't rule out a
need to update the LVDS DT bindings in order to properly support D3. I don't
mind if this patch gets merged already (provided the reset problem gets fixed
of course), as long as it won't be considered a blocker for DT bindings
rework. Otherwise I'd prefer delaying upstreaming until the whole series can
be tested.
> + status = "disabled";
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> + lvds1_in: endpoint {
> + remote-endpoint = <&du_out_lvds1>;
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> + lvds1_out: endpoint {
> };
> };
> };
--
Regards,
Laurent Pinchart
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