[PATCH v2 1/3] drm: rockchip: hdmi: fix clock rounding code

[Doug Anderson]

Hi,

On Tue, Sep 22, 2020 at 1:31 PM Vicente Bergas <vicencb at gmail.com> wrote:
>
> Under certain conditions vop_crtc_mode_fixup rounds the clock
> 148500000 to 148501000 which leads to the following error:
> dwhdmi-rockchip ff940000.hdmi: PHY configuration failed (clock 148501000)
>
> The issue was found on RK3399 booting with u-boot. U-boot configures the
> display at 2560x1440 and then linux comes up with a black screen.
> A workaround was to un-plug and re-plug the HDMI display.
>
> Signed-off-by: Vicente Bergas <vicencb at gmail.com>
> Tested-by: Vicente Bergas <vicencb at gmail.com>
> ---
>  drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)

My rk3288-veyron-minnie is stuck at work (but not plugged in) and it's
Covid times, so I can't easily test this.  ...but it looks fine to me
and makes things more symmetric / clean.

Reviewed-by: Douglas Anderson <dianders at chromium.org>

-Doug