drm: sun4i: Add support for enabling DDC I2C bus to sun8i_dw_hdmi glue

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Orange Pi 3 board requires enabling a voltage shifting circuit via GPIO
for the DDC bus to be usable.

Add support for hdmi-connector node's optional ddc-en-gpios property to
support this use case.

Signed-off-by: Ondrej Jirman <megous@megous.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190806155744.10263-4-megous@megous.com

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Ondrej Jirman 2019-08-06 17:57:42 +02:00 • committed by Maxime Ripard

parent f6700060f5

commit 4c8b4c3855

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GPG key ID: E3EF0D6F671851C5

2 changed files with 52 additions and 4 deletions

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54

drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c

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2

drivers/gpu/drm/sun4i/sun8i_dw_hdmi.h

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