Re: [PATCH v2 1/3] ARM: dts: stm32: Enable LVDS panel on i.Core STM32MP1 EDIMM2.2

[Alexandre TORGUE <alexandre.torgue@foss.st.com>]

Hi Jagan

On 11/12/21 6:38 AM, Jagan Teki wrote:
> Engicam i.Core STM32MP1 EDIMM2.2 Starter Kit has plugged with
> 7" LVDS panel.
> 
> Engicam i.Core STM32MP1 SoM has SN65DSI84 DSI to LVDS bridge.
> 
> This patch adds a display pipeline to connect DSI to SN65DSI84
> to 7" LVDS panel.
> 
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> ---
> Changes for v2:
> - none
> 
>   .../stm32mp157a-icore-stm32mp1-edimm2.2.dts   | 85 +++++++++++++++++++
>   1 file changed, 85 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/stm32mp157a-icore-stm32mp1-edimm2.2.dts b/arch/arm/boot/dts/stm32mp157a-icore-stm32mp1-edimm2.2.dts
> index ec9f1d1cd50f..d80b4415e761 100644
> --- a/arch/arm/boot/dts/stm32mp157a-icore-stm32mp1-edimm2.2.dts
> +++ b/arch/arm/boot/dts/stm32mp157a-icore-stm32mp1-edimm2.2.dts
> @@ -24,6 +24,91 @@ aliases {
>   	chosen {
>   		stdout-path = "serial0:115200n8";
>   	};
> +
> +	backlight: backlight {
> +		compatible = "gpio-backlight";
> +		gpios = <&gpiod 13 GPIO_ACTIVE_HIGH>;
> +		default-on;
> +	};
> +
> +	panel {
> +		compatible = "yes-optoelectronics,ytc700tlag-05-201c";
> +		backlight = <&backlight>;
> +		power-supply = <&v3v3>;
> +
> +		port {
> +			panel_out_bridge: endpoint {
> +				remote-endpoint = <&bridge_out_panel>;
> +			};
> +		};
> +	};
> +};
> +
> +&dsi {
> +	status = "okay";
> +	phy-dsi-supply = <&reg18>;
> +
> +	ports {
> +		port@0 {
> +			reg = <0>;
> +			dsi_in_ltdc: endpoint {
> +				remote-endpoint = <&ltdc_out_dsi>;
> +			};
> +		};
> +
> +		port@1 {
> +			reg = <1>;
> +			dsi_out_bridge: endpoint {
> +				remote-endpoint = <&bridge_in_dsi>;
> +			};
> +		};
> +	};
> +};
> +
> +&i2c6 {
> +	i2c-scl-falling-time-ns = <20>;
> +	i2c-scl-rising-time-ns = <185>;
> +	pinctrl-names = "default", "sleep";
> +	pinctrl-0 = <&i2c6_pins_a>;
> +	pinctrl-1 = <&i2c6_sleep_pins_a>;
> +	status = "okay";
> +
> +	bridge@2c {
> +		compatible = "ti,sn65dsi84";

Running dtb_check I observe following issue:

bridge@2c: ports:port@0:endpoint:data-lanes:0:0: 1 was expected
	From schema: 
/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi83.yaml

Note, the same issue is observed in patch[3] of the series.

regards
Alex


> +		reg = <0x2c>;
> +		enable-gpios = <&gpiof 15 GPIO_ACTIVE_HIGH>;
> +
> +		ports {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +
> +			port@0 {
> +				reg = <0>;
> +				bridge_in_dsi: endpoint {
> +					remote-endpoint = <&dsi_out_bridge>;
> +					data-lanes = <0 1>;
> +				};
> +			};
> +
> +			port@2 {
> +				reg = <2>;
> +				bridge_out_panel: endpoint {
> +					remote-endpoint = <&panel_out_bridge>;
> +				};
> +			};
> +		};
> +	};
> +};
> +
> +&ltdc {
> +	status = "okay";
> +
> +	port {
> +		ltdc_out_dsi: endpoint@0 {
> +			reg = <0>;
> +			remote-endpoint = <&dsi_in_ltdc>;
> +		};
> +	};
>   };
>   
>   &sdmmc1 {
>