mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-26 08:51:13 +00:00
27 lines
871 B
Diff
27 lines
871 B
Diff
From 9fef544e7d4981b5611b857609e18a20dea246e8 Mon Sep 17 00:00:00 2001
|
|
From: Dave Stevenson <dave.stevenson@raspberrypi.org>
|
|
Date: Tue, 18 Jun 2019 21:37:45 +0100
|
|
Subject: [PATCH 664/725] drm/vc4: Limit fkms to modes <= 85Hz
|
|
|
|
Selecting 1080p100 and 120 has very limited gain, but don't want
|
|
to block VGA85 and similar.
|
|
|
|
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
|
|
---
|
|
drivers/gpu/drm/vc4/vc4_firmware_kms.c | 4 ++++
|
|
1 file changed, 4 insertions(+)
|
|
|
|
--- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c
|
|
+++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
|
|
@@ -822,6 +822,10 @@ vc4_crtc_mode_valid(struct drm_crtc *crt
|
|
return MODE_NO_DBLESCAN;
|
|
}
|
|
|
|
+ /* Disable refresh rates > 85Hz as limited gain from them */
|
|
+ if (drm_mode_vrefresh(mode) > 85)
|
|
+ return MODE_BAD_VVALUE;
|
|
+
|
|
/* Limit the pixel clock based on the HDMI clock limits from the
|
|
* firmware
|
|
*/
|