dt-bindings: ufs: hisilicon,ufs: convert to dtschema

Convert the HiSilicon Universal Flash Storage (UFS) Controller to DT
schema format.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220306111125.116455-7-krzysztof.kozlowski@canonical.com

Documentation/devicetree/bindings/ufs/hisilicon,ufs.yaml

+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/ufs/hisilicon,ufs.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HiSilicon Universal Flash Storage (UFS) Controller
+
+maintainers:
+  - Li Wei <liwei213@huawei.com>
+
+# Select only our matches, not all jedec,ufs
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - hisilicon,hi3660-ufs
+          - hisilicon,hi3670-ufs
+  required:
+    - compatible
+
+allOf:
+  - $ref: ufs-common.yaml
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - const: hisilicon,hi3660-ufs
+          - const: jedec,ufs-1.1
+      - items:
+          - enum:
+              - hisilicon,hi3670-ufs
+          - const: jedec,ufs-2.1
+
+  clocks:
+    minItems: 2
+    maxItems: 2
+
+  clock-names:
+    items:
+      - const: ref_clk
+      - const: phy_clk
+
+  reg:
+    items:
+      - description: UFS register address space
+      - description: UFS SYS CTRL register address space
+
+  resets:
+    maxItems: 1
+
+  reset-names:
+    items:
+      - const: rst
+
+required:
+  - compatible
+  - reg
+  - resets
+  - reset-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/hi3670-clock.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        ufs@ff3c0000 {
+            compatible = "hisilicon,hi3670-ufs", "jedec,ufs-2.1";
+            reg = <0x0 0xff3c0000 0x0 0x1000>,
+                  <0x0 0xff3e0000 0x0 0x1000>;
+            interrupt-parent = <&gic>;
+            interrupts = <GIC_SPI 278 IRQ_TYPE_LEVEL_HIGH>;
+            clocks = <&crg_ctrl HI3670_CLK_GATE_UFSIO_REF>,
+                     <&crg_ctrl HI3670_CLK_GATE_UFS_SUBSYS>;
+            clock-names = "ref_clk", "phy_clk";
+            freq-table-hz = <0 0>,
+                            <0 0>;
+
+            resets = <&crg_rst 0x84 12>;
+            reset-names = "rst";
+        };
+    };

Documentation/devicetree/bindings/ufs/ufs-hisi.txt

-* 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 Hi3660 chipset.
-					"hisilicon,hi3670-ufs", "jedec,ufs-2.1" for hisi ufs
-					host controller present on Hi3670 chipset.
-- reg               : should contain UFS register address space & UFS SYS CTRL register address,
-- 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";
-	};