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.przyw...@arm.com>
Signed-off-by: Jernej Skrabec <jernej.skra...@siol.net>
---
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) = {
--
2.30.1
