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authorÁlvaro Fernández Rojas <noltari@gmail.com>2020-05-28 19:08:55 +0200
committerÁlvaro Fernández Rojas <noltari@gmail.com>2020-05-28 19:12:43 +0200
commit77e97abf129c5028385dd72587eabab68db0d954 (patch)
treefc52a8c2ba346da77281f00538a1eb6de49deb5d /target/linux/bcm27xx/patches-5.4/950-0262-drm-vc4-Limit-fkms-to-modes-85Hz.patch
parent5d3a0c6b26144eb5d62515b99613b5ad8dbdc717 (diff)
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bcm27xx: update to latest patches from RPi foundation
Also removes random module and switches to new bcm2711 thermal driver. Boot tested on RPi 4B v1.1 4G. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0262-drm-vc4-Limit-fkms-to-modes-85Hz.patch')
-rw-r--r--target/linux/bcm27xx/patches-5.4/950-0262-drm-vc4-Limit-fkms-to-modes-85Hz.patch26
1 files changed, 26 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0262-drm-vc4-Limit-fkms-to-modes-85Hz.patch b/target/linux/bcm27xx/patches-5.4/950-0262-drm-vc4-Limit-fkms-to-modes-85Hz.patch
new file mode 100644
index 0000000000..128ac5d54b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0262-drm-vc4-Limit-fkms-to-modes-85Hz.patch
@@ -0,0 +1,26 @@
+From 9f9d67a11cfd6318d2bd1321090c0950242cfa25 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] 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
+@@ -823,6 +823,10 @@ 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
+ */