linux-kernel - Re: [PATCH RFC 3/6] drm/msm: mdss: Add Milos support

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Message-ID: <9965e114-43c4-4470-992c-1051ff1b7f36@oss.qualcomm.com>
Date: Mon, 22 Dec 2025 11:12:52 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
        Luca Weiss <luca.weiss@...rphone.com>
Cc: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Rob Clark <robin.clark@....qualcomm.com>,
        Dmitry Baryshkov
 <lumag@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Jessica Zhang <jessica.zhang@....qualcomm.com>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH RFC 3/6] drm/msm: mdss: Add Milos support

On 22/12/2025 11:09, Konrad Dybcio wrote:
> On 12/20/25 5:52 PM, Dmitry Baryshkov wrote:
>> On Fri, Dec 19, 2025 at 05:41:09PM +0100, Luca Weiss wrote:
>>> Add support for MDSS on Milos.
>>>
>>> Signed-off-by: Luca Weiss <luca.weiss@...rphone.com>
>>> ---
>>>   drivers/gpu/drm/msm/msm_mdss.c | 5 +++++
>>>   1 file changed, 5 insertions(+)
>>>
>>
>> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
>>
>> Though 14000 seems lower than the value for all other platforms.
> 
> IIUC it's essentially "nonzero" or "first-level-above-just-nonzero"
> 
> The downstream DT also defines a 140_000 and a 310_000 point.. though
> the middle one is never(?) used and the latter one is only used during
> UEFI handoff and upon the first commit after (runtime) resume

If I remember correctly, those are also used for programming the LUTs or 
other big tables into the hardware.

> 
> Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
> 
> Konrad


-- 
With best wishes
Dmitry