Re: [PATCH v2 3/6] ARM: dts: stm32: add display support on stm32f769-disco

[Patrice CHOTARD]

On 4/1/25 09:00, Dario Binacchi wrote:
> [backport from Linux commit 598e5adfeb6062f5d4d352c0ef888b2b29d7e215]
> 
> The patch adds display support on the stm32f769-disco board.
> 
> Signed-off-by: Dario Binacchi <dario.binac...@amarulasolutions.com>
> Reviewed-by: Patrice Chotard <patrice.chot...@foss.st.com>
> 
> ---
> 
> Changes in v2:
> - Add Reviewed-by tag of Patrice Chotard
> 
>  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@0 {
> -                     dsi_out: endpoint {
> -                             remote-endpoint = <&panel_in>;
> -                     };
> -             };
> -             port@1 {
> -                     dsi_in: endpoint {
> -                             remote-endpoint = <&dp_out>;
> -                     };
> -             };
> -     };
>  };
>  
>  &ltdc {
>       clocks = <&rcc 0 STM32F7_APB2_CLOCK(LTDC)>;
>       bootph-all;
> -
> -     ports {
> -             port@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@0 {
> +                     reg = <0>;
> +                     dsi_in: endpoint {
> +                             remote-endpoint = <&ltdc_out_dsi>;
> +                     };
> +             };
> +
> +             port@1 {
> +                     reg = <1>;
> +                     dsi_out: endpoint {
> +                             remote-endpoint = <&dsi_panel_in>;
> +                     };
> +             };
> +     };
> +
> +     panel0: panel@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 {
Hi Dario

For information, stm32f769-disco.dts update 
has been dropped due to OF_UPSTREAM now available on stm32 platforms.

Applied to u-boot-stm32/master

Thanks
Patrice