linux-kernel - Re: [PATCH v4 drm-dp 05/11] drm/hisilicon/hibmc: fix rare monitors cannot display problem

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Message-ID: <6yd7injgxprrwnvtl6rbmqyiglmxo7vhrkt5ntsxx5gza6dbkr@3ea7aqnynptn>
Date: Sun, 17 Aug 2025 01:33:56 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Yongbang Shi <shiyongbang@...wei.com>
Cc: xinliang.liu@...aro.org, tiantao6@...ilicon.com,
        maarten.lankhorst@...ux.intel.com, mripard@...nel.org,
        tzimmermann@...e.de, airlied@...il.com, daniel@...ll.ch,
        kong.kongxinwei@...ilicon.com, liangjian010@...wei.com,
        chenjianmin@...wei.com, fengsheng5@...wei.com, libaihan@...wei.com,
        shenjian15@...wei.com, shaojijie@...wei.com,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 drm-dp 05/11] drm/hisilicon/hibmc: fix rare monitors
 cannot display problem

On Wed, Aug 13, 2025 at 05:42:32PM +0800, Yongbang Shi wrote:
> From: Baihan Li <libaihan@...wei.com>
> 
> In some case, the dp link training success at 8.1Gbps, but the sink's
> maximum supported rate is less than 8.1G. So change the default 8.1Gbps
> link rate to the rate that reads from devices' capabilities.
> 
> Fixes: 54063d86e036 ("drm/hisilicon/hibmc: add dp link moduel in hibmc drivers")
> Signed-off-by: Baihan Li <libaihan@...wei.com>
> Signed-off-by: Yongbang Shi <shiyongbang@...wei.com>
> ---
> ChangeLog:
> v3 -> v4:
>   - remove non-related changes, suggested by Dmitry Baryshkov.
> ---
>  drivers/gpu/drm/hisilicon/hibmc/dp/dp_link.c | 14 ++++++++++++--
>  1 file changed, 12 insertions(+), 2 deletions(-)
> 

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


-- 
With best wishes
Dmitry