[PATCH v1 4/4] crypto: rk_crypto - add DT bindings documentation

[Zain Wang]

Add DT bindings documentation for the rk3288 crypto drivers.

Signed-off-by: Zain Wang <zain.wang@xxxxxxxxxxxxxx>
---
 .../devicetree/bindings/crypto/rockchip-crypto.txt | 29 ++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/crypto/rockchip-crypto.txt

diff --git a/Documentation/devicetree/bindings/crypto/rockchip-crypto.txt b/Documentation/devicetree/bindings/crypto/rockchip-crypto.txt
new file mode 100644
index 0000000..d27e203
--- /dev/null
+++ b/Documentation/devicetree/bindings/crypto/rockchip-crypto.txt
@@ -0,0 +1,29 @@
+Rockchip Electronics And Security Accelerator
+
+Required properties:
+- compatible: Should be "rockchip,rk3288-crypto"
+- reg: base physical address of the engine and length of memory mapped
+       region
+- interrupts: interrupt number
+- clocks: reference to the clocks about crypto
+- clock-names: "aclk" used to clock data
+	       "hclk" used to clock data
+	       "srst" used to clock crypto accelerator
+	       "apb_pclk" used to clock dma
+
+Examples:
+
+	crypto: cypto-controller@ff8a0000 {
+		compatible = "rockchip,rk3288-crypto";
+		reg = <0xff8a0000 0x4000>;
+		interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&cru ACLK_CRYPTO>,
+			 <&cru HCLK_CRYPTO>,
+			 <&cru SCLK_CRYPTO>,
+			 <&cru ACLK_DMAC1>;
+		clock-names = "aclk",
+			      "hclk",
+			      "sclk",
+			      "apb_pclk";
+		status = "okay";
+	};
-- 
1.9.1


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