dt-bindings: display: rcar-du: Document R8A774[35] DU

Add device tree bindings for r8a7743 and r8a7745 DUs.
r8a7743 DU is similar to the one from r8a7791, r8a7745 DU is similar
to the one from r8a7794.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
[Don't reference R8A779[0123456] and R8A774[35] explicitly]
[Number all DPAD, HDMI and LVDS ports]
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

Documentation/devicetree/bindings/display/renesas,du.txt

@@ -3,6 +3,8 @@
 Required Properties:
 
   - compatible: must be one of the following.
+    - "renesas,du-r8a7743" for R8A7743 (RZ/G1M) compatible DU
+    - "renesas,du-r8a7745" for R8A7745 (RZ/G1E) compatible DU
     - "renesas,du-r8a7779" for R8A7779 (R-Car H1) compatible DU
     - "renesas,du-r8a7790" for R8A7790 (R-Car H2) compatible DU
     - "renesas,du-r8a7791" for R8A7791 (R-Car M2-W) compatible DU
@@ -27,10 +29,10 @@ Required Properties:
   - clock-names: Name of the clocks. This property is model-dependent.
     - R8A7779 uses a single functional clock. The clock doesn't need to be
       named.
-    - R8A779[0123456] use one functional clock per channel and one clock per
-      LVDS encoder (if available). The functional clocks must be named "du.x"
-      with "x" being the channel numerical index. The LVDS clocks must be
-      named "lvds.x" with "x" being the LVDS encoder numerical index.
+    - All other DU instances use one functional clock per channel and one
+      clock per LVDS encoder (if available). The functional clocks must be
+      named "du.x" with "x" being the channel numerical index. The LVDS clocks
+      must be named "lvds.x" with "x" being the LVDS encoder numerical index.
     - In addition to the functional and encoder clocks, all DU versions also
       support externally supplied pixel clocks. Those clocks are optional.
       When supplied they must be named "dclkin.x" with "x" being the input
@@ -49,16 +51,18 @@ bindings specified in Documentation/devicetree/bindings/graph.txt.
 The following table lists for each supported model the port number
 corresponding to each DU output.
 
-		Port 0		Port1		Port2		Port3
+                      Port0          Port1          Port2          Port3
 -----------------------------------------------------------------------------
- R8A7779 (H1)	DPAD 0		DPAD 1		-		-
- R8A7790 (H2)	DPAD		LVDS 0		LVDS 1		-
- R8A7791 (M2-W)	DPAD		LVDS 0		-		-
- R8A7792 (V2H)	DPAD 0		DPAD 1		-		-
- R8A7793 (M2-N)	DPAD		LVDS 0		-		-
- R8A7794 (E2)	DPAD 0		DPAD 1		-		-
- R8A7795 (H3)	DPAD		HDMI 0		HDMI 1		LVDS
- R8A7796 (M3-W)	DPAD		HDMI		LVDS		-
+ R8A7743 (RZ/G1M)     DPAD 0         LVDS 0         -              -
+ R8A7745 (RZ/G1E)     DPAD 0         DPAD 1         -              -
+ R8A7779 (R-Car H1)   DPAD 0         DPAD 1         -              -
+ R8A7790 (R-Car H2)   DPAD 0         LVDS 0         LVDS 1         -
+ R8A7791 (R-Car M2-W) DPAD 0         LVDS 0         -              -
+ R8A7792 (R-Car V2H)  DPAD 0         DPAD 1         -              -
+ R8A7793 (R-Car M2-N) DPAD 0         LVDS 0         -              -
+ R8A7794 (R-Car E2)   DPAD 0         DPAD 1         -              -
+ R8A7795 (R-Car H3)   DPAD 0         HDMI 0         HDMI 1         LVDS 0
+ R8A7796 (R-Car M3-W) DPAD 0         HDMI 0         LVDS 0         -
 
 
 Example: R8A7795 (R-Car H3) ES2.0 DU