On Thu, Mar 15, 2018 at 07:41:29PM +0800, Chen-Yu Tsai wrote:
The A80 has 2 or 3 TCONs. The documentation and vendor kernel are very vague about the third TCON, to the point that it might not exist.
In the documentation, the first TCON is missing channel 1, and the second is missing channel 0. However the vendor kernel seems to be able to use them regardless. Here we model them like the old TCONs.
An oddity is that TCON0 requires the reset control for the eDP block to be deasserted, for any register access to stick.
This patch adds compatible strings for TCON0 and TCON1, with TCON0 requiring an extra "edp" reset control.
Signed-off-by: Chen-Yu Tsai wens@csie.org
Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)
Reviewed-by: Rob Herring robh@kernel.org