linux-kernel - Re: [PATCH v2 4/5] drm/bridge: it6505: modify DP link training work

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Message-ID: <zhk4d26sj6xs6yhlgqpwcxysggk7un2a3ylwedj2ahjdjttoua@4sxrq7jdxfz2>
Date: Sun, 30 Mar 2025 21:45:10 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Hermes.wu@....com.tw
Cc: Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Robert Foss <rfoss@...nel.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Pet.Weng@....com.tw, Kenneth.Hung@....com.tw, treapking@...omium.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 4/5] drm/bridge: it6505: modify DP link training work

On Wed, Mar 26, 2025 at 01:34:16PM +0800, Hermes Wu via B4 Relay wrote:
> From: Hermes Wu <Hermes.wu@....com.tw>
> 
> The DP link training work include auto training and after
> auto training failed "AUTO_TRAIN_RETRY" times, it switch to
> step training mode.
> 
> It will more efficiency that finish link auto training,
> include retry, and step training in a work, rather than
> re-schedule train work when each training fail.
> 
> Drop auto_train_retry from it6505 structure,
> and it6505_dump() is remove from link trainig work,
> it takes too much time to read all register area,
> and is not necessary.
> 
> Signed-off-by: Hermes Wu <Hermes.wu@....com.tw>
> ---
>  drivers/gpu/drm/bridge/ite-it6505.c | 40 ++++++++++++++-----------------------
>  1 file changed, 15 insertions(+), 25 deletions(-)
> 

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

-- 
With best wishes
Dmitry