linux-kernel - [PATCH] dt-bindings: watchdog: Convert stm32 watchdog bindings to json-schema

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Message-ID: <20191017124159.13869-1-benjamin.gaignard@st.com>
Date:   Thu, 17 Oct 2019 14:41:59 +0200
From:   Benjamin Gaignard <benjamin.gaignard@...com>
To:     <wim@...ux-watchdog.org>, <linux@...ck-us.net>,
        <robh+dt@...nel.org>, <mark.rutland@....com>,
        <alexandre.torgue@...com>
CC:     <linux-watchdog@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Benjamin Gaignard <benjamin.gaignard@...com>
Subject: [PATCH] dt-bindings: watchdog: Convert stm32 watchdog bindings to json-schema

Convert the STM32 watchdog binding to DT schema format using json-schema

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...com>
---
 .../devicetree/bindings/watchdog/st,stm32-iwdg.txt | 26 -----------
 .../bindings/watchdog/st,stm32-iwdg.yaml           | 54 ++++++++++++++++++++++
 2 files changed, 54 insertions(+), 26 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/watchdog/st,stm32-iwdg.txt
 create mode 100644 Documentation/devicetree/bindings/watchdog/st,stm32-iwdg.yaml

diff --git a/Documentation/devicetree/bindings/watchdog/st,stm32-iwdg.txt b/Documentation/devicetree/bindings/watchdog/st,stm32-iwdg.txt
deleted file mode 100644
index d8f4430b0a13..000000000000
--- a/Documentation/devicetree/bindings/watchdog/st,stm32-iwdg.txt
+++ /dev/null
@@ -1,26 +0,0 @@
-STM32 Independent WatchDoG (IWDG)
----------------------------------
-
-Required properties:
-- compatible: Should be either:
-  - "st,stm32-iwdg"
-  - "st,stm32mp1-iwdg"
-- reg: Physical base address and length of the registers set for the device
-- clocks: Reference to the clock entry lsi. Additional pclk clock entry
-  is required only for st,stm32mp1-iwdg.
-- clock-names: Name of the clocks used.
-  "lsi" for st,stm32-iwdg
-  "lsi", "pclk" for st,stm32mp1-iwdg
-
-Optional Properties:
-- timeout-sec: Watchdog timeout value in seconds.
-
-Example:
-
-iwdg: watchdog@...03000 {
-	compatible = "st,stm32-iwdg";
-	reg = <0x40003000 0x400>;
-	clocks = <&clk_lsi>;
-	clock-names = "lsi";
-	timeout-sec = <32>;
-};
diff --git a/Documentation/devicetree/bindings/watchdog/st,stm32-iwdg.yaml b/Documentation/devicetree/bindings/watchdog/st,stm32-iwdg.yaml
new file mode 100644
index 000000000000..edec96d53e6b
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/st,stm32-iwdg.yaml
@@ -0,0 +1,54 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/st,stm32-iwdg.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: STMicroelectronics STM32 Independent WatchDoG (IWDG) bindings
+
+maintainers:
+  - Yannick Fertre <yannick.fertre@...com>
+
+allOf: 
+  - $ref: "watchdog.yaml#"
+
+properties:
+  compatible:
+    enum:
+      - st,stm32-iwdg
+      - st,stm32mp1-iwdg
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Low speed clock
+      - description: Optional peripheral clock
+    minItems: 1
+    maxItems: 2
+
+  clock-names:
+    items:
+      enums: [ lsi, pclk ]
+    minItems: 1
+    maxItems: 2
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+
+examples:
+  - |
+    #include <dt-bindings/clock/stm32mp1-clks.h>
+    watchdog@...02000 {
+      compatible = "st,stm32mp1-iwdg";
+      reg = <0x5a002000 0x400>;
+      clocks = <&rcc IWDG2>, <&rcc CK_LSI>;
+      clock-names = "pclk", "lsi";
+      timeout-sec = <32>;
+    };
+
+...
-- 
2.15.0