Hi,
Just spotted this thread.
On 06.06.2017 14:58, Tomi Valkeinen wrote:
> On 06/06/17 15:48, Boris Brezillon wrote:
>
>> Okay. Thanks for the clarification. Can you confirm that this version
>> is correct?
>>
>> dsi@xxx {
>> #address-cells = <1>;
>> #size-cells = <0>;
>>
>> ports {
>> #address-cells = <1>;
>> #size-cells = <0>;
>> dpi_in: port@0 {
>> reg = <0>;
>> #address-cells = <1>;
>> #size-cells = <0>;
>>
>> endpoint@0 {
>> remote-endpoint = <&dpi_out>;
>> };
>> };
>>
>> dsi_out: port@1 {
>> reg = <1>;
>> #address-cells = <1>;
>> #size-cells = <0>;
>>
>> dsi_out_vc0: endpoint@0 {
>> reg = <0>;
>> remote-endpoint = <&dsi_panel0_in>;
>> };
>>
>> dsi_out_vc1: endpoint@1 {
>> reg = <1>;
>> remote-endpoint = <&dsi_panel1_in>;
>> };
>> };
>> };
>>
>> panel@0 {
>> compatible = "...";
>> reg = <0>;
>> #address-cells = <1>;
>> #size-cells = <0>;
>>
>> port@0 {
>> #address-cells = <1>;
>> #size-cells = <0>;
>> reg = <0>;
>>
>> dsi_panel0_in: endpoint@0 {
>> reg = <0>;
>> remote-endpoint = <&dsi_out_vc0>;
>> };
>> };
>> };
>>
>> panel@1 {
>> compatible = "...";
>> reg = <1>;
>> #address-cells = <1>;
>> #size-cells = <0>;
>>
>> port@0 {
>> #address-cells = <1>;
>> #size-cells = <0>;
>> reg = <0>;
>>
>> dsi_panel1_in: endpoint@0 {
>> reg = <0>;
>> remote-endpoint = <&dsi_out_vc1>;
>> };
>> };
>> };
>> };
>>
> Looks correct to me. I think it can be a bit shorter though:
>
> - You don't need #address-cells and #size-cells for all. I think those
> are inherited from the parent.
> - If there's just one port and one endpoint, you can leave the 'reg'
> out, as it's considered to be 0 by default.
>
> So for the panel, you can have just:
>
> port {
> dsi_panel1_in: endpoint {
> remote-endpoint = <&dsi_out_vc1>;
> };
> };
In case DSI bus is used to both control and sending video signal you can
skip video links from dsi-host to dsi-child, so nodes can look like:
dsi@xxx {
#address-cells = <1>;
#size-cells = <0>;
ports {
#address-cells = <1>;
#size-cells = <0>;
dpi_in: port@0 {
reg = <0>;
#address-cells = <1>;
#size-cells = <0>;
endpoint@0 {
remote-endpoint = <&dpi_out>;
};
};
};
panel@0 {
compatible = "...";
reg = <0>;
};
panel@1 {
compatible = "...";
reg = <1>;
};
};
Regards
Andrzej
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