linux-kernel - [PATCH 0/2] Add quirk to disable PSR 2 on Tongfang PHxTxX1 and PHxTQx1

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Date:   Wed, 22 Feb 2023 15:17:53 +0100
From:   Werner Sembach <wse@...edocomputers.com>
To:     jani.nikula@...ux.intel.com, joonas.lahtinen@...ux.intel.com,
        rodrigo.vivi@...el.com, tvrtko.ursulin@...ux.intel.com,
        airlied@...il.com, daniel@...ll.ch, jose.souza@...el.com,
        jouni.hogander@...el.com, mika.kahola@...el.com,
        ville.syrjala@...ux.intel.com, lucas.demarchi@...el.com,
        Diego.SantaCruz@...netix.com, wse@...edocomputers.com,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] Add quirk to disable PSR 2 on Tongfang PHxTxX1 and PHxTQx1

On these Barebones PSR 2 is recognized as supported but is very buggy:
- Upper third of screen does sometimes not updated, resulting in
disappearing cursors or ghosts of already closed Windows saying behind.
- Approximately 40 px from the bottom edge a 3 pixel wide strip of randomly
colored pixels is flickering.

PSR 1 is working fine however.

This patchset introduces a new quirk to disable PSR 2 specifically on known
buggy devices and applies it to the Tongfang PHxTxX1 and PHxTQx1 barebones.

Signed-off-by: Werner Sembach <wse@...edocomputers.com>
Cc: <stable@...r.kernel.org>