On Mon 07 Jun 12:05 CDT 2021, Douglas Anderson wrote:
> Putting the panel under the bridge chip (under the aux-bus node)
> allows the panel driver to get access to the DP AUX bus, enabling all
> sorts of fabulous new features.
>
> While we're at this, get rid of a level of hierarchy for the panel
> node. It doesn't need "ports / port" and can just have a "port" child.
>
> For Linux, this patch has a hard requirement on the patches adding DP
> AUX bus support to the ti-sn65dsi86 bridge chip driver. See the patch
> ("drm/bridge: ti-sn65dsi86: Add support for the DP AUX bus").
>
> Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
> Acked-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
In case you want to merge this together with the driver changes
(even though there's no direct need for them to go together):
Acked-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Regards,
Bjorn
> ---
>
> (no changes since v7)
>
> Changes in v7:
> - Panel now under bridge chip instead of getting a link to ddc-i2c
>
> arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi | 30 ++++++++++----------
> 1 file changed, 15 insertions(+), 15 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
> index 24d293ef56d7..c76afd857b54 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
> @@ -260,21 +260,6 @@ max98357a: audio-codec-0 {
> #sound-dai-cells = <0>;
> };
>
> - panel: panel {
> - /* Compatible will be filled in per-board */
> - power-supply = <&pp3300_dx_edp>;
> - backlight = <&backlight>;
> - hpd-gpios = <&sn65dsi86_bridge 2 GPIO_ACTIVE_HIGH>;
> -
> - ports {
> - port {
> - panel_in_edp: endpoint {
> - remote-endpoint = <&sn65dsi86_out>;
> - };
> - };
> - };
> - };
> -
> pwmleds {
> compatible = "pwm-leds";
> keyboard_backlight: keyboard-backlight {
> @@ -674,6 +659,21 @@ sn65dsi86_out: endpoint {
> };
> };
> };
> +
> + aux-bus {
> + panel: panel {
> + /* Compatible will be filled in per-board */
> + power-supply = <&pp3300_dx_edp>;
> + backlight = <&backlight>;
> + hpd-gpios = <&sn65dsi86_bridge 2 GPIO_ACTIVE_HIGH>;
> +
> + port {
> + panel_in_edp: endpoint {
> + remote-endpoint = <&sn65dsi86_out>;
> + };
> + };
> + };
> + };
> };
> };
>
> --
> 2.32.0.rc1.229.g3e70b5a671-goog
>
