From: Ryan Brue <ryanbrue.dev@gmail.com>
To: Nickolay Goppen <setotau@mainlining.org>,
Neil Armstrong <neil.armstrong@linaro.org>,
Jessica Zhang <jesszhan0024@gmail.com>,
David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>
Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
Alexey Minnekhanov <alexeymin@minlexx.ru>,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org
Subject: Re: [PATCH v3 0/3] Novatek NT51021 DSI panel IC driver
Date: Sun, 13 Sep 2026 12:23:46 -0500 [thread overview]
Message-ID: <2ac704f5-40e5-4212-8b16-6b23912ef4b8@gmail.com> (raw)
In-Reply-To: <20260913-qcom-novatek-nt51021-panels-v3-0-266bc5d7e8c9@mainlining.org>
Tested-by: Ryan Brue <ryanbrue.dev@gmail.com> # Amazon Fire HD 10
(2017), boe,tv101wum-nm0
On the CABC teardown for the nm0 variant that Sashiko found: the write
is a single DSI generic command to the panel IC just before it is
powered off, so there is nothing on I2C for it to collide with (the
LP8557 backlight is a different device and is already off by then). On
the Fire HD 10 the full disable/unprepare then prepare/enable path runs
on every DPMS cycle and system suspend, and the panel comes back cleanly
every time. Skipping the call for variants that never turn CABC on would
be tidier, though, and I am fine either way; I'll let it be your call
Nickolay. Thanks for pulling in my patches!
prev parent reply other threads:[~2026-09-13 17:23 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-13 14:50 [PATCH v3 0/3] Novatek NT51021 DSI panel IC driver Nickolay Goppen
2026-09-13 14:50 ` [PATCH v3 1/3] dt-bindings: display: panel: Add Novatek NT51021 Nickolay Goppen
2026-09-13 14:50 ` [PATCH v3 2/3] drivers: gpu: drm: panel: Add BOE NT51021 driver Nickolay Goppen
2026-09-13 14:56 ` sashiko-bot
2026-09-13 14:50 ` [PATCH v3 3/3] MAINTAINERS: Add myself and Ryan Brue as maintainers of NT51021 panel driver Nickolay Goppen
2026-09-13 17:23 ` Ryan Brue [this message]
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