Re: [PATCH 12/13] drm/sun4i: hdmi-phy: Fix H6 8-bit MPLL config at 594 MHz

[Chen-Yu Tsai]

On Tue, Aug 4, 2026 at 12:11 AM Jernej Skrabec <jernej.skrabec@xxxxxxxxx> wrote:
>
> The 8-bit entry of the last MPLL row (594 MHz) doesn't lock reliably on
> H6. 4K@60 RGB/YUV444, which is the mode that reaches this entry, doesn't
> come up.
>
> Align the value with the vendor driver. Other entries are left alone,
> they are used by lower pixel clocks which work fine.
>
> Tested with 4K@60 on a LG TV.
>
> Fixes: 0fb4b858b102 ("drm/sun4i: Add support for H6 HDMI PHY")
> Signed-off-by: Jernej Skrabec <jernej.skrabec@xxxxxxxxx>

Acked-by: Chen-Yu Tsai <wens@xxxxxxxxxx>

> ---
>  drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c b/drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c
> index 4fa69c463dc4..489ea94693ff 100644
> --- a/drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c
> +++ b/drivers/gpu/drm/sun4i/sun8i_hdmi_phy.c
> @@ -91,7 +91,7 @@ static const struct dw_hdmi_mpll_config sun50i_h6_mpll_cfg[] = {
>                 },
>         },  {
>                 594000000, {
> -                       { 0x1a40, 0x0003 },
> +                       { 0x1a7c, 0x0003 },
>                         { 0x3b4c, 0x0003 },
>                         { 0x5a64, 0x0003 },
>                 },
> --
> 2.43.0
>