linux-kernel - Re: [PATCH v2 1/2] arm64: dts: ti: k3-j721e-main: Update DSS EDP integration configuration register

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Message-ID: <ab3b7c55-842e-47fe-b7c2-d076da08c3c0@ti.com>
Date: Mon, 8 Sep 2025 11:50:54 +0530
From: Harikrishna Shenoy <h-shenoy@...com>
To: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
CC: <nm@...com>, <vigneshr@...com>, <kristo@...nel.org>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>, <r-ravikumar@...com>,
        <m-chawdhry@...com>, <b-padhi@...com>, <u-kumar1@...com>,
        <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <aradhya.bhatia@...ux.dev>,
        <devarsht@...com>, <s-jain1@...com>
Subject: Re: [PATCH v2 1/2] arm64: dts: ti: k3-j721e-main: Update DSS EDP
 integration configuration register


On 9/8/25 11:46, Tomi Valkeinen wrote:
> Hi,
>
> On 07/09/2025 21:28, Harikrishna Shenoy wrote:
>> Fix size of DSS_EDP0_INT_CFG_VP to 256B as stated in
>> TRM Table 2-1 MAIN Domain Memory Map.
>> Link: https://www.ti.com/lit/zip/spruil1/SPRUIL_DRA829_TDA4VM
> What issues does this cause?
>
>   Tomi

Hi Tomi,

No issues seen in driver functionality yet, but it might when we enable 
HDCP,MST which driver supports but not enabled yet.

so thought it is better to align as per TRM, hence aligning the size as 
per TRM.

>> Fixes: 92c996f4ceab ("arm64: dts: ti: k3-j721e-*: add DP & DP PHY")
>> Reviewed-by: Devarsh Thakkar <devarsht@...com>
>> Signed-off-by: Harikrishna Shenoy <h-shenoy@...com>
>> ---
>>   arch/arm64/boot/dts/ti/k3-j721e-main.dtsi | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
>> index ab3666ff4297..3fa7537d5414 100644
>> --- a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
>> +++ b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
>> @@ -1863,7 +1863,7 @@ mhdp: dp-bridge@...0000 {
>>   		 * the PHY driver.
>>   		 */
>>   		reg = <0x00 0x0a000000 0x00 0x030a00>, /* DSS_EDP0_V2A_CORE_VP_REGS_APB */
>> -		      <0x00 0x04f40000 0x00 0x20>;    /* DSS_EDP0_INTG_CFG_VP */
>> +		      <0x00 0x04f40000 0x00 0x100>;    /* DSS_EDP0_INTG_CFG_VP */
>>   		reg-names = "mhdptx", "j721e-intg";
>>   
>>   		clocks = <&k3_clks 151 36>;