From: nicolas saenz julienne <nsaenz@kernel.org>
To: Maxime Ripard <maxime@cerno.tech>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Thomas Zimmermann <tzimmermann@suse.de>,
Daniel Vetter <daniel.vetter@intel.com>,
David Airlie <airlied@linux.ie>
Cc: linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org,
linux-rpi-kernel@lists.infradead.org,
Mike Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>,
Florian Fainelli <f.fainelli@gmail.com>,
Michael Stapelberg <michael@stapelberg.ch>,
Linus Torvalds <torvalds@linux-foundation.org>,
Dave Stevenson <dave.stevenson@raspberrypi.com>
Subject: Re: [PATCH 5/5] drm/vc4: hdmi: Make sure the controller is powered in detect
Date: Thu, 30 Sep 2021 17:55:29 +0200 [thread overview]
Message-ID: <878837a91b4174ec2534be7fe2506b975e23d8d1.camel@kernel.org> (raw)
In-Reply-To: <20210922125419.4125779-6-maxime@cerno.tech>
On Wed, 2021-09-22 at 14:54 +0200, Maxime Ripard wrote:
> If the HPD GPIO is not available and drm_probe_ddc fails, we end up
> reading the HDMI_HOTPLUG register, but the controller might be powered
> off resulting in a CPU hang. Make sure we have the power domain and the
> HSM clock powered during the detect cycle to prevent the hang from
> happening.
>
> Fixes: 4f6e3d66ac52 ("drm/vc4: Add runtime PM support to the HDMI encoder driver")
> Signed-off-by: Maxime Ripard <maxime@cerno.tech>
> Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
> ---
Reviewed-by: Nicolas Saenz Julienne <nsaenz@kernel.org>
Tested-by: Nicolas Saenz Julienne <nsaenz@kernel.org>
Regards,
Nicolas
WARNING: multiple messages have this Message-ID (diff)
From: nicolas saenz julienne <nsaenz@kernel.org>
To: Maxime Ripard <maxime@cerno.tech>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Thomas Zimmermann <tzimmermann@suse.de>,
Daniel Vetter <daniel.vetter@intel.com>,
David Airlie <airlied@linux.ie>
Cc: linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org,
linux-rpi-kernel@lists.infradead.org,
Mike Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>,
Florian Fainelli <f.fainelli@gmail.com>,
Michael Stapelberg <michael@stapelberg.ch>,
Linus Torvalds <torvalds@linux-foundation.org>,
Dave Stevenson <dave.stevenson@raspberrypi.com>
Subject: Re: [PATCH 5/5] drm/vc4: hdmi: Make sure the controller is powered in detect
Date: Thu, 30 Sep 2021 17:55:29 +0200 [thread overview]
Message-ID: <878837a91b4174ec2534be7fe2506b975e23d8d1.camel@kernel.org> (raw)
In-Reply-To: <20210922125419.4125779-6-maxime@cerno.tech>
On Wed, 2021-09-22 at 14:54 +0200, Maxime Ripard wrote:
> If the HPD GPIO is not available and drm_probe_ddc fails, we end up
> reading the HDMI_HOTPLUG register, but the controller might be powered
> off resulting in a CPU hang. Make sure we have the power domain and the
> HSM clock powered during the detect cycle to prevent the hang from
> happening.
>
> Fixes: 4f6e3d66ac52 ("drm/vc4: Add runtime PM support to the HDMI encoder driver")
> Signed-off-by: Maxime Ripard <maxime@cerno.tech>
> Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
> ---
Reviewed-by: Nicolas Saenz Julienne <nsaenz@kernel.org>
Tested-by: Nicolas Saenz Julienne <nsaenz@kernel.org>
Regards,
Nicolas
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-09-30 15:55 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-22 12:54 [PATCH 0/5] drm/vc4: hdmi: Remove CPU hangs, take 2 Maxime Ripard
2021-09-22 12:54 ` Maxime Ripard
2021-09-22 12:54 ` [PATCH 1/5] clk: bcm-2835: Pick the closest clock rate Maxime Ripard
2021-09-22 12:54 ` Maxime Ripard
2021-09-28 16:26 ` nicolas saenz julienne
2021-09-28 16:26 ` nicolas saenz julienne
2021-09-30 18:08 ` Stephen Boyd
2021-09-30 18:08 ` Stephen Boyd
2021-10-13 12:59 ` (subset) " Maxime Ripard
2021-10-13 12:59 ` Maxime Ripard
2021-09-22 12:54 ` [PATCH 2/5] clk: bcm-2835: Remove rounding up the dividers Maxime Ripard
2021-09-22 12:54 ` Maxime Ripard
2021-09-28 16:26 ` nicolas saenz julienne
2021-09-28 16:26 ` nicolas saenz julienne
2021-09-29 13:27 ` Maxime Ripard
2021-09-29 13:27 ` Maxime Ripard
2021-09-30 18:09 ` Stephen Boyd
2021-09-30 18:09 ` Stephen Boyd
2021-10-13 12:59 ` (subset) " Maxime Ripard
2021-10-13 12:59 ` Maxime Ripard
2021-09-22 12:54 ` [PATCH 3/5] drm/vc4: hdmi: Set a default HSM rate Maxime Ripard
2021-09-22 12:54 ` Maxime Ripard
2021-09-30 15:51 ` nicolas saenz julienne
2021-09-30 15:51 ` nicolas saenz julienne
2021-10-13 12:59 ` (subset) " Maxime Ripard
2021-10-13 12:59 ` Maxime Ripard
2021-09-22 12:54 ` [PATCH 4/5] drm/vc4: hdmi: Move the HSM clock enable to runtime_pm Maxime Ripard
2021-09-22 12:54 ` Maxime Ripard
2021-09-30 15:54 ` nicolas saenz julienne
2021-09-30 15:54 ` nicolas saenz julienne
2021-10-13 12:59 ` (subset) " Maxime Ripard
2021-10-13 12:59 ` Maxime Ripard
2021-09-22 12:54 ` [PATCH 5/5] drm/vc4: hdmi: Make sure the controller is powered in detect Maxime Ripard
2021-09-22 12:54 ` Maxime Ripard
2021-09-30 15:55 ` nicolas saenz julienne [this message]
2021-09-30 15:55 ` nicolas saenz julienne
2021-10-13 12:59 ` (subset) " Maxime Ripard
2021-10-13 12:59 ` Maxime Ripard
[not found] ` <CANnVG6kFC7q_dDDp4rRZsJz=paHKy2STn9127LE=JJOf2kW2TA@mail.gmail.com>
2021-09-23 7:05 ` [PATCH 0/5] drm/vc4: hdmi: Remove CPU hangs, take 2 Michael Stapelberg
2021-09-23 7:05 ` Michael Stapelberg
2021-09-24 7:40 ` Maxime Ripard
2021-09-24 7:40 ` Maxime Ripard
2021-09-28 13:05 ` Maxime Ripard
2021-09-28 13:05 ` Maxime Ripard
2021-09-30 18:09 ` Stephen Boyd
2021-09-30 18:09 ` Stephen Boyd
2021-09-30 18:39 ` Florian Fainelli
2021-09-30 18:39 ` Florian Fainelli
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=878837a91b4174ec2534be7fe2506b975e23d8d1.camel@kernel.org \
--to=nsaenz@kernel.org \
--cc=airlied@linux.ie \
--cc=daniel.vetter@intel.com \
--cc=dave.stevenson@raspberrypi.com \
--cc=f.fainelli@gmail.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-clk@vger.kernel.org \
--cc=linux-rpi-kernel@lists.infradead.org \
--cc=maarten.lankhorst@linux.intel.com \
--cc=maxime@cerno.tech \
--cc=michael@stapelberg.ch \
--cc=mturquette@baylibre.com \
--cc=sboyd@kernel.org \
--cc=torvalds@linux-foundation.org \
--cc=tzimmermann@suse.de \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.