Hi Greg, Eric, Kindly consider/review following vc4 fixes picked from raspberrypi tree, https://github.com/raspberrypi/linux/tree/rpi-4.4.y, for stable 4.4.y. Cherry-picked and build tested on Linux 4.4.76 for ARCH=arm/arm64 + allmodconfig. Regards, Amit Pundir Eric Anholt (5): drm/vc4: Fix NULL deref in HDMI init error path drm/vc4: Initialize scaler DISPBKGND on modeset. drm/vc4: Fix setting of vertical timings in the CRTC. drm/vc4: Add another reg to HDMI debug dumping. drm/vc4: Bring HDMI up from power off if necessary. drivers/gpu/drm/vc4/vc4_crtc.c | 16 ++++++++++++++++ drivers/gpu/drm/vc4/vc4_hdmi.c | 32 ++++++++++++++++++++++++++++++-- drivers/gpu/drm/vc4/vc4_regs.h | 16 ++++++++++++++++ 3 files changed, 62 insertions(+), 2 deletions(-) -- 2.13.0