[PATCH 0/2] drm/meson: vclk: revert and re-fix vclk calculations
Neil Armstrong
neil.armstrong at linaro.org
Mon Feb 24 00:39:03 PST 2025
On 10/01/2025 08:44, Christian Hewitt wrote:
> Patch 1 reverts a previous fix for loss of HDMI sync when playing YUV420
> @ 59.94 media. The patch does resolve a calculation issue. It also makes
> all fractional rates invalid which is a bigger problem.
>
> Patch 2 provides a proper fix after I figured out the actual root cause
> of the original problem. This time the maths checks out.
>
> Apologies to the stable team as the original patch has been applied to
> a wide range of older and LTS kernels (as far as 5.10). Please let me
> know if combining the two patches into a single 'fix the previous fix'
> patch would be preferred?
>
> Christian
>
> Christian Hewitt (2):
> Revert "drm/meson: vclk: fix calculation of 59.94 fractional rates"
> drm/meson: vclk: fix precision in vclk calculations
>
> drivers/gpu/drm/meson/meson_encoder_hdmi.c | 42 +++++++++++-----------
> drivers/gpu/drm/meson/meson_vclk.c | 7 ++--
> 2 files changed, 25 insertions(+), 24 deletions(-)
>
LGTM
Reviewed-by: Neil Armstrong <neil.armstrong at linaro.org>
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