[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <b3dbtmqigdrazkhlu55r5tzo5w7ixf65m6y56nvqnaetkv6onk@xsakfzc7mmzu>
Date: Sat, 3 May 2025 01:43:27 +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>, Rob Clark <robdclark@...il.com>,
Bjorn Andersson <andersson@...nel.org>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>, linux-arm-msm@...r.kernel.org,
dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
Rob Clark <robdclark@...omium.org>, linux-clk@...r.kernel.org,
Srinivas Kandagatla <srini@...nel.org>
Subject: Re: [PATCH v5 14/24] drm/msm/dsi/phy: Toggle back buffer resync
after preparing PLL
On Wed, Apr 30, 2025 at 03:00:44PM +0200, Krzysztof Kozlowski wrote:
> According to Hardware Programming Guide for DSI PHY, the retime buffer
> resync should be done after PLL clock users (byte_clk and intf_byte_clk)
> are enabled. Downstream also does it as part of configuring the PLL.
>
> Driver was only turning of the resync FIFO buffer, but never bringing it
> on again.
>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
>
> ---
>
> Changes in v5:
> 1. New patch
> ---
> drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
--
With best wishes
Dmitry
Powered by blists - more mailing lists