drm/rockchip: inno_hdmi: Fix video timing

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[ Upstream commit 47a145c034 ]

The controller wants the difference between *total and *sync_start in the
HDMI_VIDEO_EXT_*DELAY registers. Otherwise the signal is very unstable for
certain non-VIC modes. See downstream commit [0].

[0] 8eb559f250

Fixes: 412d4ae6b7 ("drm/rockchip: hdmi: add Innosilicon HDMI support")
Co-developed-by: Zheng Yang <zhengyang@rock-chips.com>
Signed-off-by: Zheng Yang <zhengyang@rock-chips.com>
Signed-off-by: Alex Bee <knaerzche@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20231222174220.55249-4-knaerzche@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Alex Bee 2023-12-22 18:41:54 +01:00 • committed by Sasha Levin

parent c994fed05c

commit e6ed73bb8e

1 changed files with 2 additions and 2 deletions

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drivers/gpu/drm/rockchip/inno_hdmi.c

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