linux-kernel - Re: [PATCH v4 1/4] drm/msm/dp: Fix support of LTTPR initialization

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Message-ID: <8a5970fd-8ebb-4ed2-8276-7b5ad4ec2f9f@quicinc.com>
Date: Wed, 30 Apr 2025 17:24:40 -0700
From: Abhinav Kumar <quic_abhinavk@...cinc.com>
To: Aleksandrs Vinarskis <alex.vinarskis@...il.com>,
        Dmitry Baryshkov
	<lumag@...nel.org>, <linux-arm-msm@...r.kernel.org>,
        <dri-devel@...ts.freedesktop.org>, <freedreno@...ts.freedesktop.org>,
        <linux-kernel@...r.kernel.org>, <dmitry.baryshkov@....qualcomm.com>
CC: Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        "Marijn
 Suijten" <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        <laurentiu.tudor1@...l.com>, <abel.vesa@...aro.org>,
        <johan@...nel.org>, Johan Hovold
	<johan+linaro@...nel.org>
Subject: Re: [PATCH v4 1/4] drm/msm/dp: Fix support of LTTPR initialization



On 4/29/2025 5:09 PM, Aleksandrs Vinarskis wrote:
> Initialize LTTPR before msm_dp_panel_read_sink_caps, as DPTX shall
> (re)read DPRX caps after LTTPR detection, as required by DP 2.1,
> Section 3.6.7.6.1.
> 

Thanks for the patch.

Small correction: this is section 3.6.7.6.1 of DP 2.1a not DP 2.1


> Fixes: 72d0af4accd9 ("drm/msm/dp: Add support for LTTPR handling")
> 
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
> Signed-off-by: Aleksandrs Vinarskis <alex.vinarskis@...il.com>
> Tested-by: Johan Hovold <johan+linaro@...nel.org>
> Tested-by: Rob Clark <robdclark@...il.com>
> ---
>   drivers/gpu/drm/msm/dp/dp_display.c | 13 +++++++++----
>   1 file changed, 9 insertions(+), 4 deletions(-)
> 

No need to resend for this, I can even fix it up while applying,

With that addressed,

Reviewed-by: Abhinav Kumar <quic_abhinavk@...cinc.com>