[PATCH v4 2/6] dt-bindings: add binding for A64 DE2 CCU SRAM

[Icenowy Zheng]

A64's Display Engine 2.0 needs a section of SRAM (SRAM C) to be claimed,
otherwise the whole DE2 memory zone cannot be accessed (kept to all 0).

Add binding for this, in order to make the DE2 CCU able to claim the
SRAM and enable access to the DE2 clock and reset registers.

Acked-by: Rob Herring <robh@xxxxxxxxxx>
Signed-off-by: Icenowy Zheng <icenowy@xxxxxxx>
---
Changes in v4:
- Added Rob's ACK.

Changes in v2:
- Adds description of the situation when the SRAM is not claimed.

 Documentation/devicetree/bindings/clock/sun8i-de2.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/sun8i-de2.txt b/Documentation/devicetree/bindings/clock/sun8i-de2.txt
index f2fa87c4765c..a7d558a2b9b2 100644
--- a/Documentation/devicetree/bindings/clock/sun8i-de2.txt
+++ b/Documentation/devicetree/bindings/clock/sun8i-de2.txt
@@ -6,6 +6,7 @@ Required properties :
 		- "allwinner,sun8i-a83t-de2-clk"
 		- "allwinner,sun8i-h3-de2-clk"
 		- "allwinner,sun8i-v3s-de2-clk"
+		- "allwinner,sun50i-a64-de2-clk"
 		- "allwinner,sun50i-h5-de2-clk"
 
 - reg: Must contain the registers base address and length
@@ -18,6 +19,10 @@ Required properties :
 - #clock-cells : must contain 1
 - #reset-cells : must contain 1
 
+Additional required properties for "allwinner,sun50i-a64-de2-clk" :
+- allwinner,sram: See Documentation/devicetree/bindings/sram/sunxi-sram.txt,
+		  should be the SRAM C section on A64 SoC.
+
 Example:
 de2_clocks: clock@1000000 {
 	compatible = "allwinner,sun8i-h3-de2-clk";
-- 
2.14.2