Re: [PATCH v2] arm64: dts: ti: k3-am62l: Add HDMI & DSI support

[Kumar, Udit]

On 5/28/2026 7:05 PM, Swamil Jain wrote:
> From: Devarsh Thakkar <devarsht@xxxxxx>
> 
> Add DSS, DSI, DPHY, and HDMI bridge nodes to enable DPI-to-HDMI output
> on AM62L[1]. The DSS uses parallel DPI interface with pinctrl
> configuration to drive an external SiI9022 HDMI bridge.
> 
> DSI and DPHY nodes are added but remain disabled, as the AM62L shares a
> single video port for DPI and DSI output.
> 
> DSI functionality can be enabled via overlays when required.
> 
> [1]: https://www.ti.com/product/AM62L
> 
> Signed-off-by: Devarsh Thakkar <devarsht@xxxxxx>
> Signed-off-by: Swamil Jain <s-jain1@xxxxxx>
> ---
> Changelog:
> v1->v2:
> - Update the commit message to elaborate more about the patch.
> - Add dpi-pinctrl configuration.
> - Update the interrupt routing index for HDMI interrupt line
> 
> Link to v1: https://lore.kernel.org/all/20260513210942.692269-1-s-jain1@xxxxxx/
> ---
>  arch/arm64/boot/dts/ti/k3-am62l-main.dtsi | 47 +++++++++++
>  arch/arm64/boot/dts/ti/k3-am62l3-evm.dts  | 95 +++++++++++++++++++++++
>  2 files changed, 142 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am62l-main.dtsi b/arch/arm64/boot/dts/ti/k3-am62l-main.dtsi
> index 80615ca1e01a..1d255c9138db 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62l-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am62l-main.dtsi
> @@ -584,4 +584,51 @@ scmi_shmem: sram@0 {
>  			bootph-all;
>  		};
>  	};
> +
> +	dss: dss@30200000 {
> +		compatible = "ti,am62l-dss";
> +		reg = <0x00 0x30200000 0x00 0x1000>, /* common */
> +		      <0x00 0x30202000 0x00 0x1000>, /* vidl1 */
> +		      <0x00 0x30207000 0x00 0x1000>, /* ovr1 */
> +		      <0x00 0x3020a000 0x00 0x1000>, /* vp1 */
> +		      <0x00 0x30201000 0x00 0x1000>; /* common1 */
> +		reg-names = "common", "vidl1", "ovr1", "vp1", "common1";
> +		power-domains = <&scmi_pds 39>;
> +		clocks = <&scmi_clk 162>,
> +			 <&scmi_clk 161>;
> +		clock-names = "fck", "vp1";
> +		interrupts = <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>;
> +		status = "disabled";
> +
> +		dss_ports: ports {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +		};
> +	};
> +
> +	dphy_tx0: phy@301c0000 {
> +		compatible = "ti,j721e-dphy";
> +		reg = <0x0 0x301c0000 0x0 0x1000>;
> +		clocks = <&scmi_clk 348>, <&scmi_clk 343>;
> +		clock-names = "psm", "pll_ref";
> +		#phy-cells = <0>;
> +		power-domains = <&scmi_pds 86>;
> +		assigned-clocks = <&scmi_clk 343>;
> +		assigned-clock-parents = <&scmi_clk 341>;
> +		assigned-clock-rates = <25000000>;
> +		status = "disabled";
> +	};
> +
> +	dsi0: dsi@30500000 {
> +		compatible = "ti,j721e-dsi";
> +		reg = <0x0 0x30500000 0x0 0x100000>, <0x0 0x30270000 0x0 0x100>;
> +		clocks = <&scmi_clk 155>, <&scmi_clk 158>;
> +		clock-names = "dsi_p_clk", "dsi_sys_clk";
> +		power-domains = <&scmi_pds 38>;
> +		interrupt-parent = <&gic500>;
> +		interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>;
> +		phys = <&dphy_tx0>;
> +		phy-names = "dphy";
> +		status = "disabled";


I think you should add port information for dsi as well
see DSI node in other SOC (J721E, J721S2, J784s4) for reference.


> +	};
>  };
> diff --git a/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts b/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts
> index a1af4571a815..9b04fa6d2cba 100644
> --- a/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts
> +++ b/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts
> @@ -119,6 +119,18 @@ vcc_1v8: regulator-3 {
>  		regulator-always-on;
>  		regulator-boot-on;
>  	};
> +
[..]