rockchip: video: Add a display driver for rockchip HDMI
Some Rockchip SoCs support HDMI output. Add a display driver for this so
that these displays can be used on supported boards.
Unfortunately this driver is not fully functional. It cannot reliably read
EDID information over HDMI. This seems to be due to the clocks being
incorrect - the I2C bus speed appears to be up to 100x slower than the
clock settings indicate. The root cause may be in the clock logic.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 9ecfeae..912e397 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -303,6 +303,16 @@
The devices provide a simple interface to start up the display,
read display information and enable it.
+config VIDEO_ROCKCHIP
+ bool "Enable Rockchip video support"
+ depends on DM_VIDEO
+ help
+ Rockchip SoCs provide video output capabilities for High-Definition
+ Multimedia Interface (HDMI), Low-voltage Differential Signalling
+ (LVDS), embedded DisplayPort (eDP) and Display Serial Interface
+ (DSI). This driver supports the on-chip video output device, and
+ targets the Rockchip RK3288.
+
config VIDEO_SANDBOX_SDL
bool "Enable sandbox video console using SDL"
depends on SANDBOX