kernel_samsung_a53x/drivers/gpu
Christian Hewitt 34d1eac73e drm/meson: vclk: fix calculation of 59.94 fractional rates
[ Upstream commit bfbc68e4d8695497f858a45a142665e22a512ea3 ]

Playing 4K media with 59.94 fractional rate (typically VP9) causes the screen to lose
sync with the following error reported in the system log:

[   89.610280] Fatal Error, invalid HDMI vclk freq 593406

Modetest shows the following:

3840x2160 59.94 3840 4016 4104 4400 2160 2168 2178 2250 593407 flags: xxxx, xxxx,
drm calculated value -------------------------------------^

Change the fractional rate calculation to stop DIV_ROUND_CLOSEST rounding down which
results in vclk freq failing to match correctly.

Fixes: e5fab2ec9ca4 ("drm/meson: vclk: add support for YUV420 setup")
Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20240109230704.4120561-1-christianshewitt@gmail.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240109230704.4120561-1-christianshewitt@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-19 12:26:57 +01:00
..
arm gpu: exynos: Small Underclock 2024-11-18 18:58:02 +01:00
drm drm/meson: vclk: fix calculation of 59.94 fractional rates 2024-11-19 12:26:57 +01:00
host1x gpu: host1x: Do not setup DMA for virtual devices 2024-11-19 11:32:44 +01:00
ipu-v3 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
trace Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
vga Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Makefile Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00