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From: Maxime Ripard <maxime@cerno.tech>
To: Rob Clark <robdclark@gmail.com>,
	Caleb Connolly <caleb.connolly@linaro.org>
Cc: Amit Pundir <amit.pundir@linaro.org>,
	John Stultz <john.stultz@linaro.org>,
	Andrzej Hajda <a.hajda@samsung.com>,
	Sam Ravnborg <sam@ravnborg.org>,
	Daniel Vetter <daniel.vetter@intel.com>,
	David Airlie <airlied@linux.ie>, Jonas Karlman <jonas@kwiboo.se>,
	Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
	Thierry Reding <thierry.reding@gmail.com>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	Neil Armstrong <narmstrong@baylibre.com>,
	Robert Foss <robert.foss@linaro.org>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Sean Paul <sean@poorly.run>,
	"open list:DRM DRIVER FOR MSM ADRENO GPU" 
	<freedreno@lists.freedesktop.org>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	lkml <linux-kernel@vger.kernel.org>,
	Xinliang Liu <xinliang.liu@linaro.org>,
	Seung-Woo Kim <sw0312.kim@samsung.com>,
	Tian Tao <tiantao6@hisilicon.com>,
	Inki Dae <inki.dae@samsung.com>,
	Linux Samsung SOC <linux-samsung-soc@vger.kernel.org>,
	linux-arm-msm <linux-arm-msm@vger.kernel.org>,
	dri-devel <dri-devel@lists.freedesktop.org>,
	Chen Feng <puck.chen@hisilicon.com>,
	Xinwei Kong <kong.kongxinwei@hisilicon.com>,
	Joonyoung Shim <jy0922.shim@samsung.com>
Subject: Re: [PATCH v4 00/24] drm/bridge: Make panel and bridge probe order consistent
Date: Wed, 13 Oct 2021 16:16:29 +0200	[thread overview]
Message-ID: <20211013141629.qfeqwsyi5yobzjca@gilmour> (raw)
In-Reply-To: <b57fbc24-9ef3-a57b-17d4-2cb33fb409d4@linaro.org>

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Hi Caleb,

On Thu, Sep 30, 2021 at 09:20:52PM +0100, Caleb Connolly wrote:
> Hi,
> 
> On 30/09/2021 20:49, Amit Pundir wrote:
> > On Thu, 30 Sept 2021 at 04:50, Rob Clark <robdclark@gmail.com> wrote:
> > > 
> > > On Wed, Sep 29, 2021 at 2:51 PM John Stultz <john.stultz@linaro.org> wrote:
> > > > 
> > > > On Wed, Sep 29, 2021 at 2:32 PM John Stultz <john.stultz@linaro.org> wrote:
> > > > > On Wed, Sep 29, 2021 at 2:27 PM John Stultz <john.stultz@linaro.org> wrote:
> > > > > > On Fri, Sep 10, 2021 at 3:12 AM Maxime Ripard <maxime@cerno.tech> wrote:
> > > > > > > The best practice to avoid those issues is to register its functions only after
> > > > > > > all its dependencies are live. We also shouldn't wait any longer than we should
> > > > > > > to play nice with the other components that are waiting for us, so in our case
> > > > > > > that would mean moving the DSI device registration to the bridge probe.
> > > > > > > 
> > > > > > > I also had a look at all the DSI hosts, and it seems that exynos, kirin and msm
> > > > > > > would be affected by this and wouldn't probe anymore after those changes.
> > > > > > > Exynos and kirin seems to be simple enough for a mechanical change (that still
> > > > > > > requires to be tested), but the changes in msm seemed to be far more important
> > > > > > > and I wasn't confortable doing them.
> > > > > > 
> > > > > > 
> > > > > > Hey Maxime,
> > > > > >    Sorry for taking so long to get to this, but now that plumbers is
> > > > > > over I've had a chance to check it out on kirin
> > > > > > 
> > > > > > Rob Clark pointed me to his branch with some fixups here:
> > > > > >     https://gitlab.freedesktop.org/robclark/msm/-/commits/for-mripard/bridge-rework
> > > > > > 
> > > > > > But trying to boot hikey with that, I see the following loop indefinitely:
> > > > > > [    4.632132] adv7511 2-0039: supply avdd not found, using dummy regulator
> > > > > > [    4.638961] adv7511 2-0039: supply dvdd not found, using dummy regulator
> > > > > > [    4.645741] adv7511 2-0039: supply pvdd not found, using dummy regulator
> > > > > > [    4.652483] adv7511 2-0039: supply a2vdd not found, using dummy regulator
> > > > > > [    4.659342] adv7511 2-0039: supply v3p3 not found, using dummy regulator
> > > > > > [    4.666086] adv7511 2-0039: supply v1p2 not found, using dummy regulator
> > > > > > [    4.681898] adv7511 2-0039: failed to find dsi host
> > > > > 
> > > > > I just realized Rob's tree is missing the kirin patch. My apologies!
> > > > > I'll retest and let you know.
> > > > 
> > > > Ok, just retested including the kirin patch and unfortunately I'm
> > > > still seeing the same thing.  :(
> > > > 
> > > > Will dig a bit and let you know when I find more.
> > > 
> > > Did you have a chance to test it on anything using drm/msm with DSI
> > > panels?  That would at least confirm that I didn't miss anything in
> > > the drm/msm patch to swap the dsi-host vs bridge ordering..
> > 
> > Hi, smoke tested
> > https://gitlab.freedesktop.org/robclark/msm/-/commits/for-mripard/bridge-rework
> > on Pocophone F1 (sdm845 / A630) with v5.15-rc3. I see no obvious
> > regressions in my limited testing so far including video (youtube)
> > playback.
> Tested on the OnePlus 6 too booting AOSP, works fine. This *fixes*
> FBDEV_EMULATION (so we can get a working framebuffer console) which was
> otherwise broken on 5.15.
> 
> However it spits out some warnings during boot: https://p.calebs.dev/gucysowyna.yaml

Thanks for testing. It looks like the runtime_pm ordering between the
msm devices changed a bit with the conversion Rob did.

Rob, do you know what could be going on?

Thanks!
Maxime

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  reply	other threads:[~2021-10-13 14:16 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-10 10:11 Maxime Ripard
2021-09-10 10:11 ` [PATCH v4 01/24] drm/bridge: Add documentation sections Maxime Ripard
2021-09-24 17:52   ` (subset) " Maxime Ripard
2021-09-10 10:11 ` [PATCH v4 02/24] drm/bridge: Document the probe issue with MIPI-DSI bridges Maxime Ripard
2021-09-13  6:29   ` Andrzej Hajda
2021-09-14 14:35     ` Maxime Ripard
2021-09-14 19:00       ` Andrzej Hajda
2021-09-22  8:57         ` Maxime Ripard
2021-09-24 17:52   ` (subset) " Maxime Ripard
2021-09-10 10:11 ` [PATCH v4 03/24] drm/mipi-dsi: Create devm device registration Maxime Ripard
2021-09-24 17:52   ` (subset) " Maxime Ripard
2021-09-10 10:11 ` [PATCH v4 04/24] drm/mipi-dsi: Create devm device attachment Maxime Ripard
2021-09-24 17:52   ` (subset) " Maxime Ripard
2021-09-10 10:11 ` [PATCH v4 05/24] drm/bridge: adv7533: Switch to devm MIPI-DSI helpers Maxime Ripard
2021-09-10 10:12 ` [PATCH v4 06/24] drm/bridge: adv7511: Register and attach our DSI device at probe Maxime Ripard
2021-09-10 10:12 ` [PATCH v4 07/24] drm/bridge: anx7625: Switch to devm MIPI-DSI helpers Maxime Ripard
2021-09-10 10:12 ` [PATCH v4 08/24] drm/bridge: anx7625: Register and attach our DSI device at probe Maxime Ripard
2021-09-10 10:12 ` [PATCH v4 09/24] drm/bridge: lt8912b: Switch to devm MIPI-DSI helpers Maxime Ripard
2021-09-10 10:12 ` [PATCH v4 10/24] drm/bridge: lt8912b: Register and attach our DSI device at probe Maxime Ripard
2021-09-10 10:12 ` [PATCH v4 11/24] drm/bridge: lt9611: Switch to devm MIPI-DSI helpers Maxime Ripard
2021-09-10 10:12 ` [PATCH v4 12/24] drm/bridge: lt9611: Register and attach our DSI device at probe Maxime Ripard
2021-09-10 10:12 ` [PATCH v4 13/24] drm/bridge: lt9611uxc: Switch to devm MIPI-DSI helpers Maxime Ripard
2021-09-10 10:12 ` [PATCH v4 14/24] drm/bridge: lt9611uxc: Register and attach our DSI device at probe Maxime Ripard
2021-09-10 10:12 ` [PATCH v4 15/24] drm/bridge: ps8640: Switch to devm MIPI-DSI helpers Maxime Ripard
2021-09-10 10:12 ` [PATCH v4 16/24] drm/bridge: ps8640: Register and attach our DSI device at probe Maxime Ripard
2021-09-10 10:12 ` [PATCH v4 17/24] drm/bridge: sn65dsi83: Switch to devm MIPI-DSI helpers Maxime Ripard
2021-09-10 10:12 ` [PATCH v4 18/24] drm/bridge: sn65dsi83: Register and attach our DSI device at probe Maxime Ripard
2021-09-10 10:12 ` [PATCH v4 19/24] drm/bridge: sn65dsi86: Switch to devm MIPI-DSI helpers Maxime Ripard
2021-09-10 10:12 ` [PATCH v4 20/24] drm/bridge: sn65dsi86: Register and attach our DSI device at probe Maxime Ripard
2021-09-10 10:12 ` [PATCH v4 21/24] drm/bridge: tc358775: Switch to devm MIPI-DSI helpers Maxime Ripard
2021-09-10 10:12 ` [PATCH v4 22/24] drm/bridge: tc358775: Register and attach our DSI device at probe Maxime Ripard
2021-09-10 10:12 ` [PATCH v4 23/24] drm/kirin: dsi: Adjust probe order Maxime Ripard
2021-09-10 10:12 ` [PATCH v4 24/24] drm/exynos: " Maxime Ripard
2021-09-13 10:30   ` Andrzej Hajda
2021-09-17 12:35     ` Marek Szyprowski
2021-09-22  8:53       ` Maxime Ripard
2021-09-23  8:14         ` Marek Szyprowski
2021-09-29 21:27 ` [PATCH v4 00/24] drm/bridge: Make panel and bridge probe order consistent John Stultz
2021-09-29 21:32   ` John Stultz
2021-09-29 21:51     ` John Stultz
2021-09-29 23:25       ` Rob Clark
2021-09-29 23:25         ` John Stultz
2021-09-30  2:30         ` John Stultz
2021-09-30 19:49         ` Amit Pundir
2021-09-30 20:20           ` Caleb Connolly
2021-10-13 14:16             ` Maxime Ripard [this message]
2021-10-14  0:16               ` [Freedreno] " Rob Clark
2021-10-18 12:34                 ` Maxime Ripard
2021-10-18 15:55                   ` Rob Clark
2021-09-29 23:29       ` John Stultz
2021-10-13 13:45         ` Maxime Ripard
2021-09-29 21:56 ` Laurent Pinchart
2021-10-03 13:25   ` Laurent Pinchart

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