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