linux-kernel - Re: [PATCH v2 2/3] arm64: dts: qcom: lemans: add mdss1 display device nodes

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Message-ID: <5dc3d3e0-a338-4f2f-8987-5705fc1fde51@oss.qualcomm.com>
Date: Wed, 17 Dec 2025 14:52:24 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: Mani Chandana Ballary Kuntumalla <quic_mkuntuma@...cinc.com>,
        marijn.suijten@...ainline.org, swboyd@...omium.org, mripard@...nel.org,
        abel.vesa@...aro.org, andersson@...nel.org, konradybcio@...nel.org,
        robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
        robin.clark@....qualcomm.com, jessica.zhang@....qualcomm.com,
        abhinav.kumar@...ux.dev, sean@...rly.run, airlied@...il.com,
        simona@...ll.ch, alex.vinarskis@...il.com,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        freedreno@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        quic_rajeevny@...cinc.com, quic_vproddut@...cinc.com,
        quic_riteshk@...cinc.com, quic_amitsi@...cinc.com,
        Mahadevan P <mahadevan.p@....qualcomm.com>
Subject: Re: [PATCH v2 2/3] arm64: dts: qcom: lemans: add mdss1 display device
 nodes

On 12/10/25 9:21 AM, Dmitry Baryshkov wrote:
> On Mon, Dec 01, 2025 at 02:35:44PM +0100, Konrad Dybcio wrote:
>> On 11/25/25 11:56 AM, Mani Chandana Ballary Kuntumalla wrote:
>>> Add devicetree changes to enable second Mobile Display Subsystem (mdss1),
>>> Display Processing Unit(DPU), Display Port(DP) controllers and eDP PHYs
>>> on the Qualcomm Lemans platform.
>>>
>>> Signed-off-by: Mahadevan P <mahadevan.p@....qualcomm.com>
>>> Signed-off-by: Mani Chandana Ballary Kuntumalla <quic_mkuntuma@...cinc.com>
>>> ---
>>
>> [...]
>>
>>> +			mdss1_dp1: displayport-controller@...5c000 {
>>> +				compatible = "qcom,sa8775p-dp";
>>> +
>>> +				reg = <0x0 0x2215c000 0x0 0x104>,
>>> +				      <0x0 0x2215c200 0x0 0x0c0>,
>>> +				      <0x0 0x2215d000 0x0 0x770>,
>>> +				      <0x0 0x2215e000 0x0 0x09c>,
>>> +				      <0x0 0x2215f000 0x0 0x09c>,
>>> +				      <0x0 0x22160000 0x0 0x09c>,
>>> +				      <0x0 0x22161000 0x0 0x09c>,
>>> +				      <0x0 0x22162000 0x0 0x23c>,
>>> +				      <0x0 0x22163000 0x0 0x23c>;
>>
>> The last two regions still happen not to exist
> 
> According to the memory map I observe, they do exist.

Hm, you're right, I don't know why I couldn't find them in the past

Konrad