Hi, The VC4 driver has had limited support to disable the HDMI controllers and pixelvalves at boot if the firmware has enabled them. However, this proved to be limited, and a bit unreliable so a new firmware command has been introduced some time ago to make it free all its resources and disable any display output it might have enabled. This series takes advantage of that command to call it once the transition from simplefb to the KMS driver has been done. Let me know what you think, Maxime Maxime Ripard (5): dt-bindings: display: vc4: Add optional phandle to firmware firmware: raspberrypi: Add RPI_FIRMWARE_NOTIFY_DISPLAY_DONE drm/vc4: Remove conflicting framebuffers before callind bind_all drm/vc4: Notify the firmware when DRM is in charge ARM: dts: rpi: Add the firmware node to vc4 .../bindings/display/brcm,bcm2835-vc4.yaml | 5 ++++ arch/arm/boot/dts/bcm2835-rpi.dtsi | 4 +++ drivers/gpu/drm/vc4/vc4_drv.c | 27 ++++++++++++++++--- drivers/gpu/drm/vc4/vc4_drv.h | 2 ++ include/soc/bcm2835/raspberrypi-firmware.h | 1 + 5 files changed, 35 insertions(+), 4 deletions(-) -- 2.33.1
