[PATCH 3/6] ARM: dts: stm32: add display support on stm32f769-disco

[Patrice CHOTARD]

On 3/24/25 19:00, Dario Binacchi wrote:
> [backport from Linux commit 598e5adfeb6062f5d4d352c0ef888b2b29d7e215]
> 
> The patch adds display support on the stm32f769-disco board.
> 
> Signed-off-by: Dario Binacchi <dario.binacchi at amarulasolutions.com>
> ---
> 
>  arch/arm/dts/stm32f769-disco-u-boot.dtsi | 34 --------------
>  arch/arm/dts/stm32f769-disco.dts         | 58 ++++++++++++++++++++++++
>  2 files changed, 58 insertions(+), 34 deletions(-)
> 
> diff --git a/arch/arm/dts/stm32f769-disco-u-boot.dtsi b/arch/arm/dts/stm32f769-disco-u-boot.dtsi
> index c5ae753debe6..16a9eecd4a99 100644
> --- a/arch/arm/dts/stm32f769-disco-u-boot.dtsi
> +++ b/arch/arm/dts/stm32f769-disco-u-boot.dtsi
> @@ -32,18 +32,6 @@
>  		compatible = "st,led1";
>  		led-gpio = <&gpioj 5 0>;
>  	};
> -
> -	panel: panel {
> -		compatible = "orisetech,otm8009a";
> -		reset-gpios = <&gpioj 15 1>;
> -		status = "okay";
> -
> -		port {
> -			panel_in: endpoint {
> -				remote-endpoint = <&dsi_out>;
> -			};
> -		};
> -	};
>  };
>  
>  &dsi {
> @@ -52,33 +40,11 @@
>  		 <&clk_hse>;
>  	clock-names = "pclk", "px_clk", "ref";
>  	bootph-all;
> -	status = "okay";
> -
> -	ports {
> -		port at 0 {
> -			dsi_out: endpoint {
> -				remote-endpoint = <&panel_in>;
> -			};
> -		};
> -		port at 1 {
> -			dsi_in: endpoint {
> -				remote-endpoint = <&dp_out>;
> -			};
> -		};
> -	};
>  };
>  
>  &ltdc {
>  	clocks = <&rcc 0 STM32F7_APB2_CLOCK(LTDC)>;
>  	bootph-all;
> -
> -	ports {
> -		port at 0 {
> -			dp_out: endpoint {
> -				remote-endpoint = <&dsi_in>;
> -			};
> -		};
> -	};
>  };
>  
>  &fmc {
> diff --git a/arch/arm/dts/stm32f769-disco.dts b/arch/arm/dts/stm32f769-disco.dts
> index b4e240a8e3eb..3fd5140ec5eb 100644
> --- a/arch/arm/dts/stm32f769-disco.dts
> +++ b/arch/arm/dts/stm32f769-disco.dts
> @@ -24,6 +24,19 @@
>  		reg = <0xC0000000 0x1000000>;
>  	};
>  
> +	reserved-memory {
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges;
> +
> +		linux,dma {
> +			compatible = "shared-dma-pool";
> +			linux,dma-default;
> +			no-map;
> +			size = <0x100000>;
> +		};
> +	};
> +
>  	aliases {
>  		serial0 = &usart1;
>  	};
> @@ -78,6 +91,45 @@
>  	clock-frequency = <25000000>;
>  };
>  
> +&dsi {
> +	#address-cells = <1>;
> +	#size-cells = <0>;
> +	status = "okay";
> +
> +	ports {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		port at 0 {
> +			reg = <0>;
> +			dsi_in: endpoint {
> +				remote-endpoint = <&ltdc_out_dsi>;
> +			};
> +		};
> +
> +		port at 1 {
> +			reg = <1>;
> +			dsi_out: endpoint {
> +				remote-endpoint = <&dsi_panel_in>;
> +			};
> +		};
> +	};
> +
> +	panel0: panel at 0 {
> +		compatible = "orisetech,otm8009a";
> +		reg = <0>; /* dsi virtual channel (0..3) */
> +		reset-gpios = <&gpioj 15 GPIO_ACTIVE_LOW>;
> +		power-supply = <&vcc_3v3>;
> +		status = "okay";
> +
> +		port {
> +			dsi_panel_in: endpoint {
> +				remote-endpoint = <&dsi_out>;
> +			};
> +		};
> +	};
> +};
> +
>  &i2c1 {
>  	pinctrl-0 = <&i2c1_pins_b>;
>  	pinctrl-names = "default";
> @@ -88,6 +140,12 @@
>  
>  &ltdc {
>  	status = "okay";
> +
> +	port {
> +		ltdc_out_dsi: endpoint {
> +			remote-endpoint = <&dsi_in>;
> +		};
> +	};
>  };
>  
>  &rtc {


Reviewed-by: Patrice Chotard <patrice.chotard at foss.st.com>

Thanks
Patrice