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
---
Changes from v2: - Use of_find_compatible_node instead of a phandle - Use devm_rpi_firmware_get
Maxime Ripard (3): 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
drivers/gpu/drm/vc4/vc4_drv.c | 27 ++++++++++++++++++---- drivers/gpu/drm/vc4/vc4_drv.h | 2 ++ include/soc/bcm2835/raspberrypi-firmware.h | 1 + 3 files changed, 26 insertions(+), 4 deletions(-)