openwrt/target/linux/starfive/patches-6.1/0062-dt-bindings-PWM-Add-StarFive-PWM-module.patch

From 99f0bf43994dada29e33fd8718fd25484634da3a Mon Sep 17 00:00:00 2001
From: William Qiu <william.qiu@starfivetech.com>
Date: Tue, 21 Mar 2023 13:52:27 +0800
Subject: [PATCH 062/122] dt-bindings: PWM: Add StarFive PWM module

Add documentation to describe StarFive Pulse Width Modulation
controller driver.

Signed-off-by: William Qiu <william.qiu@starfivetech.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 .../bindings/pwm/starfive,jh7110-pwm.yaml     | 53 +++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pwm/starfive,jh7110-pwm.yaml

--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/starfive,jh7110-pwm.yaml
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/starfive,jh7110-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive PWM controller
+
+maintainers:
+  - William Qiu <william.qiu@starfivetech.com>
+
+description:
+  StarFive SoCs contain PWM and when operating in PWM mode, the PTC core generates
+  binary signal with user-programmable low and high periods. Clock source for the
+  PWM can be either system clockor external clock. Each PWM timer block provides 8
+  PWM channels.
+
+allOf:
+  - $ref: pwm.yaml#
+
+properties:
+  compatible:
+    const: starfive,jh7110-pwm
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  "#pwm-cells":
+    const: 3
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - resets
+
+additionalProperties: false
+
+examples:
+  - |
+    pwm@120d0000 {
+        compatible = "starfive,jh7110-pwm";
+        reg = <0x120d0000 0x10000>;
+        clocks = <&syscrg 121>;
+        resets = <&syscrg 108>;
+        #pwm-cells = <3>;
+    };