openwrt/target/linux/brcm2708/patches-4.4/0514-drm-vc4-Increase-timeout-for-HDMI_SCHEDULER_CONTROL-.patch
Álvaro Fernández Rojas 011f2c26f1 brcm2708: update linux 4.4 patches to latest version
As usual these patches were extracted and rebased from the raspberry pi repo:
https://github.com/raspberrypi/linux/tree/rpi-4.4.y

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2016-12-04 12:32:04 +01:00

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1.4 KiB
Diff

From 4fe0280a07dea7997dd8a789c704f69b5620cdd2 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Wed, 28 Sep 2016 17:21:05 -0700
Subject: [PATCH] drm/vc4: Increase timeout for HDMI_SCHEDULER_CONTROL changes.
Fixes occasional debug spew at boot when connected directly through
HDMI, and probably confusing the HDMI state machine when we go trying
to poke registers for the enable sequence too soon.
Signed-off-by: Eric Anholt <eric@anholt.net>
---
drivers/gpu/drm/vc4/vc4_hdmi.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -408,7 +408,7 @@ static void vc4_hdmi_encoder_enable(stru
VC4_HDMI_SCHEDULER_CONTROL_MODE_HDMI);
ret = wait_for(HDMI_READ(VC4_HDMI_SCHEDULER_CONTROL) &
- VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE, 1);
+ VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE, 1000);
WARN_ONCE(ret, "Timeout waiting for "
"VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE\n");
} else {
@@ -420,7 +420,7 @@ static void vc4_hdmi_encoder_enable(stru
~VC4_HDMI_SCHEDULER_CONTROL_MODE_HDMI);
ret = wait_for(!(HDMI_READ(VC4_HDMI_SCHEDULER_CONTROL) &
- VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE), 1);
+ VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE), 1000);
WARN_ONCE(ret, "Timeout waiting for "
"!VC4_HDMI_SCHEDULER_CONTROL_HDMI_ACTIVE\n");
}