brcm2708: update to latest patches from the RPi foundation

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.19/950-0664-drm-vc4-Limit-fkms-to-modes-85Hz.patch b/target/linux/brcm2708/patches-4.19/950-0664-drm-vc4-Limit-fkms-to-modes-85Hz.patch
new file mode 100644
index 0000000000..c86381607c
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0664-drm-vc4-Limit-fkms-to-modes-85Hz.patch
@@ -0,0 +1,26 @@
+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
+ 	 */