On Tue, 23 Feb 2021 21:46:14 +0100 Jernej Skrabec <[email protected]> wrote:
> Currently driver accepts all resolution which won't work on 4k screens. > Add validation callback which limits acceptable resolutions to 297 MHz. Makes sense. Newer SoCs seem to support more, but apparently not without further code to enable higher clock rates. > Signed-off-by: Jernej Skrabec <[email protected]> Reviewed-by: Andre Przywara <[email protected]> Cheers, Andre > --- > drivers/video/sunxi/sunxi_dw_hdmi.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/drivers/video/sunxi/sunxi_dw_hdmi.c > b/drivers/video/sunxi/sunxi_dw_hdmi.c > index 0b8cefc311ef..e3811a2ec15f 100644 > --- a/drivers/video/sunxi/sunxi_dw_hdmi.c > +++ b/drivers/video/sunxi/sunxi_dw_hdmi.c > @@ -305,6 +305,12 @@ static int sunxi_dw_hdmi_read_edid(struct udevice *dev, > u8 *buf, int buf_size) > return dw_hdmi_read_edid(&priv->hdmi, buf, buf_size); > } > > +static bool sunxi_dw_hdmi_mode_valid(struct udevice *dev, > + const struct display_timing *timing) > +{ > + return timing->pixelclock.typ <= 297000000; > +} > + > static int sunxi_dw_hdmi_enable(struct udevice *dev, int panel_bpp, > const struct display_timing *edid) > { > @@ -388,6 +394,7 @@ static int sunxi_dw_hdmi_probe(struct udevice *dev) > static const struct dm_display_ops sunxi_dw_hdmi_ops = { > .read_edid = sunxi_dw_hdmi_read_edid, > .enable = sunxi_dw_hdmi_enable, > + .mode_valid = sunxi_dw_hdmi_mode_valid, > }; > > U_BOOT_DRIVER(sunxi_dw_hdmi) = { -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/linux-sunxi/20210304014111.1be9d3ab%40slackpad.fritz.box.
