linux-kernel - [PATCH v4 1/8] dt-bindings: add documentation of xilinx clocking wizard

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Message-Id: <1593175304-4876-2-git-send-email-shubhrajyoti.datta@xilinx.com>
Date:   Fri, 26 Jun 2020 18:11:37 +0530
From:   Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
To:     linux-clk@...r.kernel.org
Cc:     sboyd@...nel.org, robh+dt@...nel.org, gregkh@...uxfoundation.org,
        shubhrajyoti.datta@...il.com, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, michals@...inx.com,
        Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
Subject: [PATCH v4 1/8] dt-bindings: add documentation of xilinx clocking wizard

Add the devicetree binding for the xilinx clocking wizard.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
---
v4:
Move to yaml format

 .../bindings/clock/xlnx,clocking-wizard.yaml       | 71 ++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/xlnx,clocking-wizard.yaml

diff --git a/Documentation/devicetree/bindings/clock/xlnx,clocking-wizard.yaml b/Documentation/devicetree/bindings/clock/xlnx,clocking-wizard.yaml
new file mode 100644
index 0000000..5a8e991
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/xlnx,clocking-wizard.yaml
@@ -0,0 +1,71 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/xlnx,clocking-wiz.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Xilinx clocking wizard
+
+maintainers:
+  - Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
+
+description: |
+  The clocking wizard is a soft ip clocking block of Xilinx versal. It
+  reads required input clock frequencies from the devicetree and acts as clock
+  clock output.
+
+select: false
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - xlnx,clocking-wizard
+          - xlnx,clocking-wizard-6.0
+
+  "#clock-cells":
+    const: 1
+
+  clocks:
+    description: List of clock specifiers which are external input
+      clocks to the given clock controller.
+    items:
+      - description: clock input
+      - description: axi clock
+
+  clock-names:
+    items:
+      - const: clk_in1
+      - const: s_axi_aclk
+
+  speed-grade:
+    allOf:
+      - $ref: /schemas/types.yaml#/definitions/uint32
+      - enum: [1, 2, 3]
+    description:
+      Speed grade of the device.
+    maxItems: 1
+
+required:
+  - compatible
+  - "#clock-cells"
+  - clocks
+  - clock-names
+  - speed-grade
+
+additionalProperties: false
+
+examples:
+  - |
+    clock-generator@...40000 {
+        #clock-cells = <1>;
+        reg = <0x40040000 0x1000>;
+        compatible = "xlnx,clk-wizard-1.0";
+        speed-grade = <1>;
+        clock-names = "clk_in1", "s_axi_aclk";
+        clocks = <&clkc 15>, <&clkc 15>;
+        clock-output-names = "clk_out1", "clk_out2",
+        "clk_out3", "clk_out4", "clk_out5",
+        "clk_out6", "clk_out7";
+    };
+...
-- 
2.1.1