linux-kernel - [PATCH v2 2/5] dt-bindings: serial: Convert sprd-uart to json-schema

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Date:   Mon, 11 Nov 2019 17:02:27 +0800
From:   Chunyan Zhang <chunyan.zhang@...soc.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
CC:     <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Orson Zhai <orsonzhai@...il.com>,
        Baolin Wang <baolin.wang7@...il.com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        Chunyan Zhang <chunyan.zhang@...soc.com>
Subject: [PATCH v2 2/5] dt-bindings: serial: Convert sprd-uart to json-schema


Convert the sprd-uart binding to DT schema using json-schema.

Signed-off-by: Chunyan Zhang <chunyan.zhang@...soc.com>
---
 .../devicetree/bindings/serial/sprd-uart.txt  | 32 ---------
 .../devicetree/bindings/serial/sprd-uart.yaml | 69 +++++++++++++++++++
 2 files changed, 69 insertions(+), 32 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/serial/sprd-uart.txt
 create mode 100644 Documentation/devicetree/bindings/serial/sprd-uart.yaml

diff --git a/Documentation/devicetree/bindings/serial/sprd-uart.txt b/Documentation/devicetree/bindings/serial/sprd-uart.txt
deleted file mode 100644
index 9607dc616205..000000000000
--- a/Documentation/devicetree/bindings/serial/sprd-uart.txt
+++ /dev/null
@@ -1,32 +0,0 @@
-* Spreadtrum serial UART
-
-Required properties:
-- compatible: must be one of:
-  * "sprd,sc9836-uart"
-  * "sprd,sc9860-uart", "sprd,sc9836-uart"
-
-- reg: offset and length of the register set for the device
-- interrupts: exactly one interrupt specifier
-- clock-names: Should contain following entries:
-  "enable" for UART module enable clock,
-  "uart" for UART clock,
-  "source" for UART source (parent) clock.
-- clocks: Should contain a clock specifier for each entry in clock-names.
-  UART clock and source clock are optional properties, but enable clock
-  is required.
-
-Optional properties:
-- dma-names: Should contain "rx" for receive and "tx" for transmit channels.
-- dmas: A list of dma specifiers, one for each entry in dma-names.
-
-Example:
-	uart0: serial@0 {
-		compatible = "sprd,sc9860-uart",
-			     "sprd,sc9836-uart";
-		reg = <0x0 0x100>;
-		interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
-		dma-names = "rx", "tx";
-		dmas = <&ap_dma 19>, <&ap_dma 20>;
-		clock-names = "enable", "uart", "source";
-		clocks = <&clk_ap_apb_gates 9>, <&clk_uart0>, <&ext_26m>;
-	};
diff --git a/Documentation/devicetree/bindings/serial/sprd-uart.yaml b/Documentation/devicetree/bindings/serial/sprd-uart.yaml
new file mode 100644
index 000000000000..0cc4668a9b9c
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/sprd-uart.yaml
@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: GPL-2.0
+# Copyright 2019 Unisoc Inc.
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/serial/sprd-uart.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Spreadtrum serial UART
+
+maintainers:
+  - Orson Zhai <orsonzhai@...il.com>
+  - Baolin Wang <baolin.wang7@...il.com>
+  - Chunyan Zhang <zhang.lyra@...il.com>
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - sprd,sc9860-uart
+          - const: sprd,sc9836-uart
+      - const: sprd,sc9836-uart
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    minItems: 1
+    maxItems: 3
+
+  clock-names:
+    description: "enable" for UART module enable clock, "uart" for UART
+      clock, "source" for UART source (parent) clock.
+    items:
+      - const: enable
+      - const: uart
+      - const: source
+
+  dmas:
+    minItems: 1
+    maxItems: 2
+
+  dma-names:
+    minItems: 1
+    items:
+      - const: rx
+      - const: tx
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+examples:
+  - |
+    serial@0 {
+      compatible = "sprd,sc9860-uart", "sprd,sc9836-uart";
+      reg = <0x0 0x100>;
+      interrupts = <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>;
+      dma-names = "rx", "tx";
+      dmas = <&ap_dma 19>, <&ap_dma 20>;
+      clock-names = "enable", "uart", "source";
+      clocks = <&clk_ap_apb_gates 9>, <&clk_uart0>, <&ext_26m>;
+    };
+
+...
-- 
2.20.1