54 lines
1.8 KiB
Diff
54 lines
1.8 KiB
Diff
|
From c3d75c94de553c3084dd4dfd0d5d9aa6e53f3457 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Hans de Goede <hdegoede@redhat.com>
|
||
|
|
Date: Tue, 29 Jan 2019 12:53:32 +0100
|
||
|
|
Subject: [PATCH] drm/i915: Enable fastboot by default on VLV and CHV
|
||
|
|
|
||
|
|
We really want to have fastboot enabled by default to avoid an ugly
|
||
|
|
modeset during boot.
|
||
|
|
|
||
|
|
Currently we are enabling fastboot by default on gen9+ (Skylake and newer).
|
||
|
|
The intention is to enable it on older generations after it has seen more
|
||
|
|
testing on gen9+.
|
||
|
|
|
||
|
|
VLV and CHV devices are still being sold in stores today, as such it is
|
||
|
|
desirable to also enable fastboot by default on these now.
|
||
|
|
|
||
|
|
I've extensively tested fastboot=1 support on over 50 different
|
||
|
|
Bay- and Cherry-Trail devices. Testing DSI and eDP panels as well as
|
||
|
|
HDMI output (and even DP over Type-C on one device).
|
||
|
|
|
||
|
|
All 50 devices work fine with fastboot=1. On 2 devices their DSI panel
|
||
|
|
turns black as soon as the i915 driver loads when fastboot=0, so having
|
||
|
|
fastboot enabled is required for these 2 to work properly (for lack of
|
||
|
|
a better fix).
|
||
|
|
|
||
|
|
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
|
||
|
|
---
|
||
|
|
drivers/gpu/drm/i915/intel_display.c | 10 +++++++++-
|
||
|
|
1 file changed, 9 insertions(+), 1 deletion(-)
|
||
|
|
|
||
|
|
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
|
||
|
|
index d756d7358292..0ff42a38023c 100644
|
||
|
|
--- a/drivers/gpu/drm/i915/intel_display.c
|
||
|
|
+++ b/drivers/gpu/drm/i915/intel_display.c
|
||
|
|
@@ -11672,7 +11672,15 @@ static bool fastboot_enabled(struct drm_i915_private *dev_priv)
|
||
|
|
return i915_modparams.fastboot;
|
||
|
|
|
||
|
|
/* Enable fastboot by default on Skylake and newer */
|
||
|
|
- return INTEL_GEN(dev_priv) >= 9;
|
||
|
|
+ if (INTEL_GEN(dev_priv) >= 9)
|
||
|
|
+ return true;
|
||
|
|
+
|
||
|
|
+ /* Enable fastboot by default on VLV and CHV */
|
||
|
|
+ if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
|
||
|
|
+ return true;
|
||
|
|
+
|
||
|
|
+ /* Disabled by default on all others */
|
||
|
|
+ return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
static bool
|
||
|
|
--
|
||
|
|
2.20.1
|
||
|
|
|