linux-kernel - Re: [PATCH v10 3/5] arm64: dts: ti: k3-j784s4-main: Add DSS and DP-bridge node

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Date:   Wed, 4 Oct 2023 16:43:36 +0530
From:   Jayesh Choudhary <j-choudhary@...com>
To:     Nishanth Menon <nm@...com>
CC:     <vigneshr@...com>, <a-bhatia1@...com>, <afd@...com>,
        <rogerq@...nel.org>, <s-vadapalli@...com>, <conor+dt@...nel.org>,
        <r-ravikumar@...com>, <sabiya.d@...com>, <kristo@...nel.org>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v10 3/5] arm64: dts: ti: k3-j784s4-main: Add DSS and
 DP-bridge node



On 27/09/23 17:54, Nishanth Menon wrote:
> On 17:41-20230927, Jayesh Choudhary wrote:
>> From: Rahul T R <r-ravikumar@...com>
>>
>> Add DSS and DP-bridge node for J784S4 SoC. DSS IP in J784S4 is
>> same as DSS IP in J721E, so same compatible is being used.
>> The DP is Cadence MHDP8546.
>>
>> Signed-off-by: Rahul T R <r-ravikumar@...com>
>> [j-choudhary@...com: move dss & mhdp node together in main, fix dss node]
>> Signed-off-by: Jayesh Choudhary <j-choudhary@...com>
>> Reviewed-by: Aradhya Bhatia <a-bhatia1@...com>
>> ---
>>   arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi | 61 ++++++++++++++++++++++
>>   1 file changed, 61 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
>> index a0e4d8808693..5ae11b0d5d0a 100644
>> --- a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
>> +++ b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
>> @@ -1772,4 +1772,65 @@ c71_3: dsp@...00000 {
>>   		firmware-name = "j784s4-c71_3-fw";
>>   		status = "disabled";
>>   	};
>> +
>> +	mhdp: bridge@...0000 {
>> +		compatible = "ti,j721e-mhdp8546";
>> +		reg = <0x0 0xa000000 0x0 0x30a00>,
>> +		      <0x0 0x4f40000 0x0 0x20>;
>> +		reg-names = "mhdptx", "j721e-intg";
>> +		clocks = <&k3_clks 217 11>;
>> +		interrupt-parent = <&gic500>;
>> +		interrupts = <GIC_SPI 614 IRQ_TYPE_LEVEL_HIGH>;
>> +		power-domains = <&k3_pds 217 TI_SCI_PD_EXCLUSIVE>;
>> +		status = "disabled";
> 
> Document why disabled.

Okay.

> 
>> +
>> +		dp0_ports: ports {
>> +		};
> 
> Document why empty node

I will mention that the remote-endpoint are on the board so all the
properties are defined there together. So keeping it empty here.

Other way could be to add #address-cells and #size-cell here with port
child-node. And its remote end point added in the board file. But node
would still be incomplete here.

Warm Regards,
-Jayesh

> 
>> +	};
>> +
>> +	dss: dss@...0000 {
>> +		compatible = "ti,j721e-dss";
>> +		reg = <0x00 0x04a00000 0x00 0x10000>, /* common_m */
>> +		      <0x00 0x04a10000 0x00 0x10000>, /* common_s0*/
>> +		      <0x00 0x04b00000 0x00 0x10000>, /* common_s1*/
>> +		      <0x00 0x04b10000 0x00 0x10000>, /* common_s2*/
>> +		      <0x00 0x04a20000 0x00 0x10000>, /* vidl1 */
>> +		      <0x00 0x04a30000 0x00 0x10000>, /* vidl2 */
>> +		      <0x00 0x04a50000 0x00 0x10000>, /* vid1 */
>> +		      <0x00 0x04a60000 0x00 0x10000>, /* vid2 */
>> +		      <0x00 0x04a70000 0x00 0x10000>, /* ovr1 */
>> +		      <0x00 0x04a90000 0x00 0x10000>, /* ovr2 */
>> +		      <0x00 0x04ab0000 0x00 0x10000>, /* ovr3 */
>> +		      <0x00 0x04ad0000 0x00 0x10000>, /* ovr4 */
>> +		      <0x00 0x04a80000 0x00 0x10000>, /* vp1 */
>> +		      <0x00 0x04aa0000 0x00 0x10000>, /* vp1 */
>> +		      <0x00 0x04ac0000 0x00 0x10000>, /* vp1 */
>> +		      <0x00 0x04ae0000 0x00 0x10000>, /* vp4 */
>> +		      <0x00 0x04af0000 0x00 0x10000>; /* wb */
>> +		reg-names = "common_m", "common_s0",
>> +			    "common_s1", "common_s2",
>> +			    "vidl1", "vidl2","vid1","vid2",
>> +			    "ovr1", "ovr2", "ovr3", "ovr4",
>> +			    "vp1", "vp2", "vp3", "vp4",
>> +			    "wb";
>> +		clocks = <&k3_clks 218 0>,
>> +			 <&k3_clks 218 2>,
>> +			 <&k3_clks 218 5>,
>> +			 <&k3_clks 218 14>,
>> +			 <&k3_clks 218 18>;
>> +		clock-names = "fck", "vp1", "vp2", "vp3", "vp4";
>> +		power-domains = <&k3_pds 218 TI_SCI_PD_EXCLUSIVE>;
>> +		interrupts = <GIC_SPI 602 IRQ_TYPE_LEVEL_HIGH>,
>> +			     <GIC_SPI 603 IRQ_TYPE_LEVEL_HIGH>,
>> +			     <GIC_SPI 604 IRQ_TYPE_LEVEL_HIGH>,
>> +			     <GIC_SPI 605 IRQ_TYPE_LEVEL_HIGH>;
>> +		interrupt-names = "common_m",
>> +				  "common_s0",
>> +				  "common_s1",
>> +				  "common_s2";
>> +		status = "disabled";
> 
> Same
> 
>> +
>> +		dss_ports: ports {
> 
> Same
> 
>> +		};
>> +	};
>>   };
>> -- 
>> 2.25.1
>>
>