dt-bindings: reset: Convert UniPhier glue reset to json-schema

Convert the UniPhier peripheral glue reset binding to DT schema format.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1624413208-17562-1-git-send-email-hayashi.kunihiko@socionext.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

1 files changed, 88 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/reset/socionext,uniphier-glue-reset.yaml b/Documentation/devicetree/bindings/reset/socionext,uniphier-glue-reset.yaml
new file mode 100644
index 000000000000..29e4a900cad7
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/socionext,uniphier-glue-reset.yaml
@@ -0,0 +1,88 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/reset/socionext,uniphier-glue-reset.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Socionext UniPhier peripheral core reset in glue layer
+
+description: |
+  Some peripheral core reset belongs to its own glue layer. Before using
+  this core reset, it is necessary to control the clocks and resets to
+  enable this layer. These clocks and resets should be described in each
+  property.
+
+maintainers:
+  - Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
+
+properties:
+  compatible:
+    enum:
+      - socionext,uniphier-pro4-usb3-reset
+      - socionext,uniphier-pro5-usb3-reset
+      - socionext,uniphier-pxs2-usb3-reset
+      - socionext,uniphier-ld20-usb3-reset
+      - socionext,uniphier-pxs3-usb3-reset
+      - socionext,uniphier-pro4-ahci-reset
+      - socionext,uniphier-pxs2-ahci-reset
+      - socionext,uniphier-pxs3-ahci-reset
+
+  reg:
+    maxItems: 1
+
+  "#reset-cells":
+    const: 1
+
+  clocks:
+    minItems: 1
+    maxItems: 2
+
+  clock-names:
+    oneOf:
+      - items:           # for Pro4, Pro5
+          - const: gio
+          - const: link
+      - items:           # for others
+          - const: link
+
+  resets:
+    minItems: 1
+    maxItems: 2
+
+  reset-names:
+    oneOf:
+      - items:           # for Pro4, Pro5
+          - const: gio
+          - const: link
+      - items:           # for others
+          - const: link
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - "#reset-cells"
+  - clocks
+  - clock-names
+  - resets
+  - reset-names
+
+examples:
+  - |
+    usb-glue@65b00000 {
+        compatible = "simple-mfd";
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges = <0 0x65b00000 0x400>;
+
+        usb_rst: reset@0 {
+            compatible = "socionext,uniphier-ld20-usb3-reset";
+            reg = <0x0 0x4>;
+            #reset-cells = <1>;
+            clock-names = "link";
+            clocks = <&sys_clk 14>;
+            reset-names = "link";
+            resets = <&sys_rst 14>;
+        };
+    };