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Add RPI4 beta support

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Ycarus (Yannick Chabanois) 2019-06-24 19:52:48 +02:00
parent abf18246f5
commit 5f08b288eb
155 changed files with 29237 additions and 0 deletions
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31
root/target/linux/brcm2708/patches-4.19/0672-drm-vc4-Limit-fkms-to-modes-85Hz.patch Normal file
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@ -0,0 +1,31 @@
From 883a1a5bf14abc9b3a014a3907772cd0b3129c8a 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 672/678] 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(+)
diff --git a/drivers/gpu/drm/vc4/vc4_firmware_kms.c b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
index 6e9a20f54200..b5959abecf1a 100644
--- 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 *crtc, const struct drm_display_mode *mode)
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
*/
--
2.19.1