drm/meson: fix hdmi auxiliary system operation without display

[PATCH 0/2] drm/meson: fix hdmi auxiliary system operation without display

Posted by Jerome Brunet 1 week, 4 days ago

CEC and ARC should work even when HDMI is not actively used for the
display but it is not the case with Amlogic HDMI.

This is important for devices such as sound bars which may use DSI
to display a UI and HDMI for CEC/ARC. A display is not required for these
functions

This patchset fixes the problem.

Jerome Brunet (2):
  drm/meson: dw-hdmi: power up phy on device init
  drm/meson: dw-hdmi: add bandgap setting for g12

 drivers/gpu/drm/meson/meson_dw_hdmi.c | 70 ++++++++++++---------------
 1 file changed, 31 insertions(+), 39 deletions(-)

-- 
2.43.0

Re: [PATCH 0/2] drm/meson: fix hdmi auxiliary system operation without display

Posted by Neil Armstrong 4 days, 10 hours ago

Hi,

On Fri, 26 Apr 2024 18:02:52 +0200, Jerome Brunet wrote:
> CEC and ARC should work even when HDMI is not actively used for the
> display but it is not the case with Amlogic HDMI.
> 
> This is important for devices such as sound bars which may use DSI
> to display a UI and HDMI for CEC/ARC. A display is not required for these
> functions
> 
> [...]

Thanks, Applied to https://gitlab.freedesktop.org/drm/misc/kernel.git (drm-misc-fixes)

[1/2] drm/meson: dw-hdmi: power up phy on device init
      https://gitlab.freedesktop.org/drm/misc/kernel/-/commit/04703bfd7f99c016a823c74712b97f8b5590ce87
[2/2] drm/meson: dw-hdmi: add bandgap setting for g12
      https://gitlab.freedesktop.org/drm/misc/kernel/-/commit/08001033121dd92b8297a5b7333636b466c30f13

-- 
Neil