1 files changed, 41 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/ufs/ufs-hisi.txt b/Documentation/devicetree/bindings/ufs/ufs-hisi.txt
new file mode 100644
index 000000000..a48c44817
--- /dev/null
+++ b/Documentation/devicetree/bindings/ufs/ufs-hisi.txt
@@ -0,0 +1,41 @@
+* Hisilicon Universal Flash Storage (UFS) Host Controller
+
+UFS nodes are defined to describe on-chip UFS hardware macro.
+Each UFS Host Controller should have its own node.
+
+Required properties:
+- compatible        : compatible list, contains one of the following -
+					"hisilicon,hi3660-ufs", "jedec,ufs-1.1" for hisi ufs
+					host controller present on Hi36xx chipset.
+- reg               : should contain UFS register address space & UFS SYS CTRL register address,
+- interrupt-parent  : interrupt device
+- interrupts        : interrupt number
+- clocks	        : List of phandle and clock specifier pairs
+- clock-names       : List of clock input name strings sorted in the same
+					order as the clocks property. "ref_clk", "phy_clk" is optional
+- freq-table-hz     : Array of <min max> operating frequencies stored in the same
+                      order as the clocks property. If this property is not
+                      defined or a value in the array is "0" then it is assumed
+                      that the frequency is set by the parent clock or a
+                      fixed rate clock source.
+- resets            : describe reset node register
+- reset-names       : reset node register, the "rst" corresponds to reset the whole UFS IP.
+
+Example:
+
+	ufs: ufs@ff3b0000 {
+		compatible = "hisilicon,hi3660-ufs", "jedec,ufs-1.1";
+		/* 0: HCI standard */
+		/* 1: UFS SYS CTRL */
+		reg = <0x0 0xff3b0000 0x0 0x1000>,
+			<0x0 0xff3b1000 0x0 0x1000>;
+		interrupt-parent = <&gic>;
+		interrupts = <GIC_SPI 278 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&crg_ctrl HI3660_CLK_GATE_UFSIO_REF>,
+			<&crg_ctrl HI3660_CLK_GATE_UFSPHY_CFG>;
+		clock-names = "ref_clk", "phy_clk";
+		freq-table-hz = <0 0>, <0 0>;
+		/* offset: 0x84; bit: 12  */
+		resets = <&crg_rst 0x84 12>;
+		reset-names = "rst";
+	};