linux-kernel - Re: [PATCH 5/5] drm/msm/dp: Add DisplayPort controller for SA8775P

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Message-ID: <c7d18bce-cabc-4edc-b1b9-085653110528@kernel.org>
Date: Tue, 17 Sep 2024 15:44:41 +0200
From: Konrad Dybcio <konradybcio@...nel.org>
To: Soutrik Mukhopadhyay <quic_mukhopad@...cinc.com>,
 Bjorn Andersson <quic_bjorande@...cinc.com>
Cc: vkoul@...nel.org, kishon@...nel.org, konradybcio@...nel.org,
 andersson@...nel.org, simona@...ll.ch, dmitry.baryshkov@...aro.org,
 abel.vesa@...aro.org, robdclark@...il.com, quic_abhinavk@...cinc.com,
 sean@...rly.run, marijn.suijten@...ainline.org, airlied@...il.com,
 daniel@...ll.ch, maarten.lankhorst@...ux.intel.com, mripard@...nel.org,
 tzimmermann@...e.de, robh@...nel.org, krzk+dt@...nel.org,
 conor+dt@...nel.org, quic_khsieh@...cinc.com, konrad.dybcio@...aro.org,
 quic_parellan@...cinc.com, linux-arm-msm@...r.kernel.org,
 linux-phy@...ts.infradead.org, linux-kernel@...r.kernel.org,
 dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
 devicetree@...r.kernel.org, quic_riteshk@...cinc.com,
 quic_vproddut@...cinc.com
Subject: Re: [PATCH 5/5] drm/msm/dp: Add DisplayPort controller for SA8775P

On 17.09.2024 10:12 AM, Soutrik Mukhopadhyay wrote:
> 
> On 9/14/2024 2:54 AM, Bjorn Andersson wrote:
>> On Thu, Sep 12, 2024 at 03:34:05PM +0530, Soutrik Mukhopadhyay wrote:
>>> On 9/12/2024 1:32 AM, Bjorn Andersson wrote:
>>>> On Wed, Sep 11, 2024 at 03:38:13PM +0530, Soutrik Mukhopadhyay wrote:
>>>>> The Qualcomm SA8775P platform comes with a DisplayPort controller
>>>>> with a different base offset than the previous SoCs,
>>>>> add support for this in the DisplayPort driver.
>> Please check the line wrapping of this as well; the lines here should be
>> wrapped at 75 columns.

[...]

> 
> 
> We cross-checked the mdss architecture and found that there are only 2 dp controllers for each mdss.
> 
> We will add all 4 and mention in the commit message that "Only MDSS0 DPTX0 and DPTX1 have been validated".

Looking at some docs, it seems like 2x 2 controllers is indeed the
correct config after all

Konrad