linux-kernel - Re: [PATCH v6 11/17] drm/msm/dsi: Add support for SM8750

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Message-ID: <shj5i5bjauxfuynrdaw4dysx4ypfr5a4tyhjsweroemt4wcavl@anxzkf23onlm>
Date: Wed, 11 Jun 2025 01:25:01 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: Abhinav Kumar <quic_abhinavk@...cinc.com>, Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Krishna Manikandan <quic_mkrishn@...cinc.com>,
        Jonathan Marek <jonathan@...ek.ca>,
        Kuogee Hsieh <quic_khsieh@...cinc.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Dmitry Baryshkov <lumag@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Clark <robin.clark@....qualcomm.com>,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
        Abel Vesa <abel.vesa@...aro.org>,
        Srinivas Kandagatla <srini@...nel.org>
Subject: Re: [PATCH v6 11/17] drm/msm/dsi: Add support for SM8750

On Tue, Jun 10, 2025 at 04:05:49PM +0200, Krzysztof Kozlowski wrote:
> Add support for DSI on Qualcomm SM8750 SoC with notable difference:
> 
> DSI PHY PLLs, the parents of pixel and byte clocks, cannot be used as
> parents before DSI PHY is configured, the PLLs are prepared and their
> initial rate is set.  Therefore assigned-clock-parents are not working
> here and driver is responsible for reparenting clocks with proper
> procedure: see dsi_clk_init_6g_v2_9().
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> 
> ---
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>


-- 
With best wishes
Dmitry