diff options
Diffstat (limited to 'i915-enable-fastboot-on-vlv-chv.patch')
| -rw-r--r-- | i915-enable-fastboot-on-vlv-chv.patch | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/i915-enable-fastboot-on-vlv-chv.patch b/i915-enable-fastboot-on-vlv-chv.patch new file mode 100644 index 000000000..456a8bcf6 --- /dev/null +++ b/i915-enable-fastboot-on-vlv-chv.patch @@ -0,0 +1,53 @@ +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 + |