linux-kernel - Re: [PATCH v7 22/23] drm/vc4: vec: Add support for more analog TV standards

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Message-ID: <20221110105711.pgmzsykts3jiqonz@houat>
Date:   Thu, 10 Nov 2022 11:57:11 +0100
From:   Maxime Ripard <maxime@...no.tech>
To:     kfyatek+publicgit@...il.com
Cc:     Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        Ben Skeggs <bskeggs@...hat.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Samuel Holland <samuel@...lland.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Emma Anholt <emma@...olt.net>,
        Karol Herbst <kherbst@...hat.com>,
        Daniel Vetter <daniel@...ll.ch>, Chen-Yu Tsai <wens@...e.org>,
        Lyude Paul <lyude@...hat.com>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Phil Elwell <phil@...pberrypi.com>,
        Hans de Goede <hdegoede@...hat.com>,
        linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        linux-arm-kernel@...ts.infradead.org,
        Dom Cobley <dom@...pberrypi.com>,
        dri-devel@...ts.freedesktop.org, intel-gfx@...ts.freedesktop.org,
        nouveau@...ts.freedesktop.org,
        Noralf Trønnes <noralf@...nnes.org>
Subject: Re: [PATCH v7 22/23] drm/vc4: vec: Add support for more analog TV
 standards

Hi!

On Wed, Nov 09, 2022 at 02:15:29AM +0100, Mateusz Kwiatkowski wrote:
> I ran your v7 patchset on my Pi with Xorg, and the mode switching, as well as
> the preferred mode handling, all work really well now!

Thanks again for all your help

> I just noted that the downstream version of the vc4 driver still has inaccurate
> field delays in vc4_crtc.c, which causes vertical lines to appear jagged (like
> here: https://user-images.githubusercontent.com/4499762/112738569-385c3280-8f64-11eb-83c4-d671537af209.png).
> This has been fixed downstream in
> https://github.com/raspberrypi/linux/pull/4241/commits/bc093f27bf2613ec93524fdc19e922dd7dd3d800,
> but I guess that should be upstreamed separately...?

I guess I missed it while rebasing, but yeah, it should definitely be
upstreamed.

Maxime