From: Neil Armstrong <neil.armstrong@linaro.org>
To: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>,
David Airlie <airlied@gmail.com>,
Simona Vetter <simona@ffwll.ch>,
Kevin Hilman <khilman@baylibre.com>,
Jerome Brunet <jbrunet@baylibre.com>,
Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
Nicolas Belin <nbelin@baylibre.com>,
Jagan Teki <jagan@amarulasolutions.com>,
Shigeaki Asai <y-asai.0816@docomonet.jp>
Cc: dri-devel@lists.freedesktop.org,
linux-amlogic@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, stable@vger.kernel.org,
John Williams <porschemad911@gmail.com>
Subject: Re: [PATCH] drm/meson: encoder_dsi: load ENCL gamma table while ENCL is disabled
Date: Mon, 09 Nov 2026 12:05:03 +0100 [thread overview]
Message-ID: <179422230388.1497673.3746542387809770384.b4-ty@b4> (raw)
In-Reply-To: <20261004-meson-gamma-v1-1-6347558e2bb3@docomonet.jp>
Hi,
On Sun, 04 Oct 2026 23:50:17 +0900, Shigeaki Asai wrote:
> meson_encoder_dsi_atomic_enable() programmed the ENCL gamma LUT right
> after meson_venc_mipi_dsi_mode_set(), i.e. while the ENCL timing
> generator was already running (ENCL_VIDEO_EN=1). Writing the LUT
> during active video stalls the hardware: L_GAMMA_CNTL_PORT
> WR_RDY/ADR_RDY deassert and the ENCL line counter (ENCL_INFO_READ)
> freezes, so every remaining write times out (~8s total at boot) and
> the panel ends up with a corrupted gamma table (wrong colors).
>
> [...]
Thanks, Applied to https://gitlab.freedesktop.org/drm/misc/kernel.git (drm-misc-fixes)
[1/1] drm/meson: encoder_dsi: load ENCL gamma table while ENCL is disabled
https://gitlab.freedesktop.org/drm/misc/kernel/-/commit/0cb7f6d9e4b1d0a411b628ccf78695ad41c66570
--
Neil
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prev parent reply other threads:[~2026-11-09 11:05 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-04 14:50 Shigeaki Asai via B4 Relay
2026-10-04 15:31 ` Neil Armstrong
2026-11-08 3:11 ` Shigeaki Asai
2026-11-09 11:05 ` Neil Armstrong [this message]
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