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video: sunxi: Add mode_valid callback to sunxi_dw_hdmi

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Currently driver accepts all resolution which won't work on 4k screens.
Add validation callback which limits acceptable resolutions to 297 MHz.

Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
This commit is contained in:
Jernej Skrabec 2021-04-22 01:14:26 +01:00 • committed by Anatolij Gustschin
parent 84baa65dff
commit 3b9021a545
1 changed files with 7 additions and 0 deletions
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7
drivers/video/sunxi/sunxi_dw_hdmi.c
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@ -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); 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, static int sunxi_dw_hdmi_enable(struct udevice *dev, int panel_bpp,
const struct display_timing *edid) 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 = { static const struct dm_display_ops sunxi_dw_hdmi_ops = {
.read_edid = sunxi_dw_hdmi_read_edid, .read_edid = sunxi_dw_hdmi_read_edid,
.enable = sunxi_dw_hdmi_enable, .enable = sunxi_dw_hdmi_enable,
.mode_valid = sunxi_dw_hdmi_mode_valid,
}; };
U_BOOT_DRIVER(sunxi_dw_hdmi) = { U_BOOT_DRIVER(sunxi_dw_hdmi) = {