[PATCH v3 0/3] drm/rockchip: dw_hdmi: Add 4k at 30 support

[Dan Johansen]

Tested the whole series on my Rock 3A, with my 1440p monitor. Works wonders!

Thank you.

Tested-by: Dan Johansen <strit at manjaro.org>

Den 18.01.2023 kl. 14.22 skrev Sascha Hauer:
> It's been some time since I last sent this series. This version fixes
> a regression Dan Johansen reported. The reason turned out to be simple,
> I used the YUV420 register values instead of the RGB ones.
>
> I realized that we cannot achieve several modes offered by my monitor
> as these require pixelclocks that are slightly below the standard
> pixelclocks. As these are lower than the standard clock rates the PLL
> driver offers the clk driver falls back to a way lower frequency
> which results in something the monitor can't display, so this series
> now contains a patch to discard these unachievable modes.
>
> Sascha
>
> Changes since v2:
> - Use correct register values for mpll_cfg
> - Add patch to discard modes we cannot achieve
>
> Changes since v1:
> - Allow non standard clock rates only on Synopsys phy as suggested by
>    Robin Murphy
>
> Sascha Hauer (3):
>    drm/rockchip: dw_hdmi: relax mode_valid hook
>    drm/rockchip: dw_hdmi: Add support for 4k at 30 resolution
>    drm/rockchip: dw_hdmi: discard modes with unachievable pixelclocks
>
>   drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 40 ++++++++++++++++-----
>   1 file changed, 32 insertions(+), 8 deletions(-)
>
-- 
Kind regards
*Dan Johansen*
Project lead of the *Manjaro ARM* project
Manjaro-ARM <https://manjaro.org>