linux-kernel - [PATCH] dt-bindings: pwm: st: convert sti-pwm to DT schema

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Message-ID: <20230801220559.32530-1-rgallaispou@gmail.com>
Date:   Wed,  2 Aug 2023 00:05:59 +0200
From:   Raphael Gallais-Pou <rgallaispou@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Patrice Chotard <patrice.chotard@...s.st.com>
Cc:     linux-pwm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] dt-bindings: pwm: st: convert sti-pwm to DT schema

Converts st,sti-pwm binding to DT schema format

Signed-off-by: Raphael Gallais-Pou <rgallaispou@...il.com>
---
 .../devicetree/bindings/pwm/pwm-st.txt        | 43 -----------
 .../devicetree/bindings/pwm/st,sti-pwm.yaml   | 74 +++++++++++++++++++
 2 files changed, 74 insertions(+), 43 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/pwm/pwm-st.txt
 create mode 100644 Documentation/devicetree/bindings/pwm/st,sti-pwm.yaml

diff --git a/Documentation/devicetree/bindings/pwm/pwm-st.txt b/Documentation/devicetree/bindings/pwm/pwm-st.txt
deleted file mode 100644
index 19fce774cafa..000000000000
--- a/Documentation/devicetree/bindings/pwm/pwm-st.txt
+++ /dev/null
@@ -1,43 +0,0 @@
-STMicroelectronics PWM driver bindings
---------------------------------------
-
-Required parameters:
-- compatible :		"st,pwm"
-- #pwm-cells : 		Number of cells used to specify a PWM. First cell
-			specifies the per-chip index of the PWM to use and the
-			second cell is the period in nanoseconds - fixed to 2
-			for STiH41x.
-- reg :			Physical base address and length of the controller's
-			registers.
-- pinctrl-names: 	Set to "default".
-- pinctrl-0: 		List of phandles pointing to pin configuration nodes
-			for PWM module.
-			For Pinctrl properties, please refer to [1].
-- clock-names: 		Valid entries are "pwm" and/or "capture".
-- clocks: 		phandle of the clock used by the PWM module.
-			For Clk properties, please refer to [2].
-- interrupts:		IRQ for the Capture device
-
-Optional properties:
-- st,pwm-num-chan:	Number of available PWM channels.  Default is 0.
-- st,capture-num-chan:	Number of available Capture channels.  Default is 0.
-
-[1] Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
-[2] Documentation/devicetree/bindings/clock/clock-bindings.txt
-
-Example:
-
-pwm1: pwm@...10000 {
-	compatible = "st,pwm";
-	reg = <0xfe510000 0x68>;
-	#pwm-cells = <2>;
-	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_pwm1_chan0_default
-		     &pinctrl_pwm1_chan1_default
-		     &pinctrl_pwm1_chan2_default
-		     &pinctrl_pwm1_chan3_default>;
-	clocks = <&clk_sysin>;
-	clock-names = "pwm";
-	st,pwm-num-chan = <4>;
-	st,capture-num-chan = <2>;
-};
diff --git a/Documentation/devicetree/bindings/pwm/st,sti-pwm.yaml b/Documentation/devicetree/bindings/pwm/st,sti-pwm.yaml
new file mode 100644
index 000000000000..8a7833e9c10c
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/st,sti-pwm.yaml
@@ -0,0 +1,74 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/st,sti-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: STMicroelectronics STi PWM controller
+
+maintainers:
+  - Patrice Chotard <patrice.chotard@...s.st.com>
+
+allOf:
+  - $ref: pwm.yaml#
+
+properties:
+  compatible:
+    const: st,sti-pwm
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  pinctrl-names:
+    const: default
+
+  pinctrl-0:
+    description: Configuration for the default state.
+
+  clock-names:
+    const: pwm
+
+  clocks:
+    $ref: "/schemas/types.yaml#/definitions/phandle"
+
+  st,pwm-num-chan:
+    $ref: "/schemas/types.yaml#/definitions/uint32"
+    description: Number of available PWM channels.
+
+  st,capture-num-chan:
+    $ref: "/schemas/types.yaml#/definitions/uint32"
+    description: Number of available Capture channels.
+
+  "#pwm-cells":
+    const: 2
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clock-names
+  - clocks
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    pwm1: pwm@...0000 {
+        compatible = "st,sti-pwm";
+        #pwm-cells = <2>;
+        reg = <0x9510000 0x68>;
+        interrupts = <GIC_SPI 131 IRQ_TYPE_LEVEL_HIGH>;
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_pwm1_chan0_default
+                 &pinctrl_pwm1_chan1_default
+                 &pinctrl_pwm1_chan2_default
+                 &pinctrl_pwm1_chan3_default>;
+        clock-names = "pwm";
+        clocks = <&clk_sysin>;
+        st,pwm-num-chan = <4>;
+    };
+...
-- 
2.41.0