[PATCH] arm64: dts: ti: k3-am62l: Enable HDMI & DSI display

[Swamil Jain]

On 7/13/26 13:37, Vignesh Raghavendra wrote:
> On Thu, 14 May 2026 02:39:42 +0530, Swamil Jain <s-jain1 at ti.com> wrote:
>> Enable DSS, DSI and HDMI related nodes and pinmuxes.
>>
> 
> Don't see any Pinmux node added? did you miss them?

Added in v2: 
https://lore.kernel.org/all/20260528133529.3476499-1-s-jain1@ti.com/

> Also, DSI still remains disabled?
> 

Keeping HDMI out-of-box, dsi can be enabled using panel overlays.

>>
>>
>> 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 at 0 {
>>   			bootph-all;
>>   		};
>>   	};
>> +
>> +	dss: dss at 30200000 {
> 
> New nodes need to added in sorted order as per their addresses in this
> dtsi file.

Yeah, sure.

> 
>> [ ... skip 17 lines ... ]
>> +		};
>> +	};
>> +
>> +	dphy_tx0: phy at 301c0000 {
>> +		compatible = "ti,j721e-dphy";
>> +		reg = <0x0 0x301c0000 0x0 0x1000>;
> 
> reg = <0x00 0x301c0000 0x00 0x1000>;
> 

Ack.

>> +		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 at 30500000 {
>> +		compatible = "ti,j721e-dsi";
>> +		reg = <0x0 0x30500000 0x0 0x100000>, <0x0 0x30270000 0x0 0x100>;
> 
> reg = <0x00 0x30500000 0x00 0x100000>,
> 		      <0x00 0x30270000 0x00 0x100>;
> 

Ack.

>> +		clocks = <&scmi_clk 155>, <&scmi_clk 158>;
>> +		clock-names = "dsi_p_clk", "dsi_sys_clk";
>> +		power-domains = <&scmi_pds 38>;
>> +		interrupt-parent = <&gic500>;
> 
> GIC is implied, drop.
> 

Will drop in next rev.

>> +		interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>;
>> +		phys = <&dphy_tx0>;
>> +		phy-names = "dphy";
>> +		status = "disabled";
> 
> Don't you need dsi*_ports ?
> 
>>

Yes, Udit pointed in v2: 
https://lore.kernel.org/all/cb4c1b80-40c0-4e63-bfa8-65a68c577999@ti.com/
Will add ports info. in next rev.

>> diff --git a/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts b/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts
>> index a1af4571a815..7462921e2180 100644
>> --- a/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts
>> +++ b/arch/arm64/boot/dts/ti/k3-am62l3-evm.dts
>> @@ -192,6 +204,36 @@ exp2: gpio at 23 {
>>   		bootph-all;
>>   	};
>>   
>> +	sii9022: bridge-hdmi at 3b {
>> +		compatible = "sil,sii9022";
>> +		reg = <0x3b>;
>> +		interrupt-parent = <&exp1>;
> 
> Is there a reset line to the chip, I see GPIO_HDMI_RSTn in exp2 GPIO
> expander, does that need to be hooked up somewhere?
> 

It is optional, HDMI output works fine without reset-gpios.

Regards,
Swamil.