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authorJernej Skrabec <jernej.skrabec@siol.net>2021-02-09 18:59:00 +0100
committerMaxime Ripard <maxime@cerno.tech>2021-02-10 11:20:38 +0100
commit1926a0508d8947cf081280d85ff035300dc71da7 (patch)
tree58c47c9726f49024dc12ddac8d7e728c524227ff /drivers
parent6a155216c48f2f65c8dcb02c4c27549c170d24a9 (diff)
drm/sun4i: dw-hdmi: Fix max. frequency for H6
It turns out that reasoning for lowering max. supported frequency is wrong. Scrambling works just fine. Several now fixed bugs prevented proper functioning, even with rates lower than 340 MHz. Issues were just more pronounced with higher frequencies. Fix that by allowing max. supported frequency in HW and fix the comment. Fixes: cd9063757a22 ("drm/sun4i: DW HDMI: Lower max. supported rate for H6") Reviewed-by: Chen-Yu Tsai <wens@csie.org> Tested-by: Andre Heider <a.heider@gmail.com> Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20210209175900.7092-6-jernej.skrabec@siol.net
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c
index 23773a5e0650..bbdfd5e26ec8 100644
--- a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c
+++ b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c
@@ -47,11 +47,9 @@ sun8i_dw_hdmi_mode_valid_h6(struct dw_hdmi *hdmi, void *data,
{
/*
* Controller support maximum of 594 MHz, which correlates to
- * 4K@60Hz 4:4:4 or RGB. However, for frequencies greater than
- * 340 MHz scrambling has to be enabled. Because scrambling is
- * not yet implemented, just limit to 340 MHz for now.
+ * 4K@60Hz 4:4:4 or RGB.
*/
- if (mode->clock > 340000)
+ if (mode->clock > 594000)
return MODE_CLOCK_HIGH;
return MODE_OK;