From: Stephen Boyd <swboyd@chromium.org>
To: Kuogee Hsieh <khsieh@codeaurora.org>,
robdclark@gmail.com, sean@poorly.run
Cc: tanmay@codeaurora.org, abhinavk@codeaurora.org,
aravindh@codeaurora.org, khsieh@codeaurora.org, airlied@linux.ie,
daniel@ffwll.ch, linux-arm-msm@vger.kernel.org,
dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 1/3] drm/msm/dp: check sink_count before update is_connected status
Date: Tue, 13 Apr 2021 19:41:05 -0700 [thread overview]
Message-ID: <161836806593.3764895.3487656287937752851@swboyd.mtv.corp.google.com> (raw)
In-Reply-To: <1618355470-5226-1-git-send-email-khsieh@codeaurora.org>
Quoting Kuogee Hsieh (2021-04-13 16:11:10)
> Link status is different from display connected status in the case
> of something like an Apple dongle where the type-c plug can be
> connected, and therefore the link is connected, but no sink is
> connected until an HDMI cable is plugged into the dongle.
> The sink_count of DPCD of dongle will increase to 1 once an HDMI
> cable is plugged into the dongle so that display connected status
> will become true. This checking also apply at pm_resume.
>
> Fixes: 94e58e2d06e3 ("drm/msm/dp: reset dp controller only at boot up and pm_resume")
> Reported-by: Stephen Boyd <swboyd@chromium.org>
> Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
> ---
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Tested-by: Stephen Boyd <swboyd@chromium.org>
next prev parent reply other threads:[~2021-04-14 2:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-13 23:11 [PATCH v2 1/3] drm/msm/dp: check sink_count before update is_connected status Kuogee Hsieh
2021-04-14 2:41 ` Stephen Boyd [this message]
2021-04-14 21:02 Kuogee Hsieh
2021-04-14 21:18 ` Stephen Boyd
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=161836806593.3764895.3487656287937752851@swboyd.mtv.corp.google.com \
--to=swboyd@chromium.org \
--cc=abhinavk@codeaurora.org \
--cc=airlied@linux.ie \
--cc=aravindh@codeaurora.org \
--cc=daniel@ffwll.ch \
--cc=dri-devel@lists.freedesktop.org \
--cc=freedreno@lists.freedesktop.org \
--cc=khsieh@codeaurora.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=robdclark@gmail.com \
--cc=sean@poorly.run \
--cc=tanmay@codeaurora.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).