dt-bindings: display: sunxi-drm: Add TCON TOP description

TCON TOP main purpose is to configure whole display pipeline. It
determines relationships between mixers and TCONs, selects source TCON
for HDMI, muxes LCD and TV encoder GPIO output, selects TV encoder
clock source and contains additional TV TCON and DSI gates.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180625120304.7543-5-jernej.skrabec@siol.net

include/dt-bindings/clock/sun8i-tcon-top.h

@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
+/* Copyright (C) 2018 Jernej Skrabec <jernej.skrabec@siol.net> */
+
+#ifndef _DT_BINDINGS_CLOCK_SUN8I_TCON_TOP_H_
+#define _DT_BINDINGS_CLOCK_SUN8I_TCON_TOP_H_
+
+#define CLK_TCON_TOP_TV0	0
+#define CLK_TCON_TOP_TV1	1
+#define CLK_TCON_TOP_DSI	2
+
+#endif /* _DT_BINDINGS_CLOCK_SUN8I_TCON_TOP_H_ */