linux-kernel - Re: [PATCH v1 00/35] drm: Analog TV Improvements

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Message-ID: <CANUESCG22TrxasYoE2U0OJ7TVzNAcs_9zkuAfBQfZrEbM4h9dg@mail.gmail.com>
Date:   Fri, 26 Aug 2022 15:56:18 +0100
From:   Dom Cobley <dom@...pberrypi.com>
To:     Mateusz Kwiatkowski <kfyatek@...il.com>
Cc:     Maxime Ripard <maxime@...no.tech>,
        Noralf Trønnes <noralf@...nnes.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Jerome Brunet <jbrunet@...libre.com>,
        Samuel Holland <samuel@...lland.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Daniel Vetter <daniel@...ll.ch>, Emma Anholt <emma@...olt.net>,
        David Airlie <airlied@...ux.ie>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Kevin Hilman <khilman@...libre.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Phil Elwell <phil@...pberrypi.com>,
        linux-arm-kernel@...ts.infradead.org,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        linux-amlogic@...ts.infradead.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH v1 00/35] drm: Analog TV Improvements

On Fri, 26 Aug 2022 at 05:08, Mateusz Kwiatkowski <kfyatek@...il.com> wrote:
> - Commenting out the pm_runtime_put() / pm_runtime_get_sync() calls in vc4_vec.c
> - Reverting this PR by Dom Cobley a.k.a. popcornmix:
>    https://github.com/raspberrypi/linux/pull/4639
>
> Either of these approaches makes VEC mode switching work again. Obviously
> neither is appropriate for a permanent solution.

Might be worth trying the latest rpi-update firmware.
There was a change that affects restoring PIXEL/VEC clocks after a
power domain cycle.
There is also a fix for a USB boot breakage.

If you still have an issue that occurs in downstream pi tree but not
upstream, then create a linux github issue.