linux-kernel - [PATCH 2/2] pwm: pwm-gpio: Add DT bindings

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Message-ID: <20201205214616.e4one25o3oz5dhrp@einstein.dilieto.eu>
Date:   Sat, 5 Dec 2020 22:46:16 +0100
From:   Nicola Di Lieto <nicola.dilieto@...il.com>
To:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, Lee Jones <lee.jones@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
Subject: [PATCH 2/2] pwm: pwm-gpio: Add DT bindings

Added Documentation/devicetree/bindings/pwm/pwm-gpio.yaml

Signed-off-by: Nicola Di Lieto <nicola.dilieto@...il.com>
---
 .../devicetree/bindings/pwm/pwm-gpio.yaml          | 42 ++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pwm/pwm-gpio.yaml

diff --git a/Documentation/devicetree/bindings/pwm/pwm-gpio.yaml b/Documentation/devicetree/bindings/pwm/pwm-gpio.yaml
new file mode 100644
index 000000000000..2e021ac6ff4a
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-gpio.yaml
@@ -0,0 +1,42 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/pwm-gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Generic software PWM for modulating GPIOs
+
+maintainers:
+  - Nicola Di Lieto <nicola.dilieto@...il.com>
+
+properties:
+  "#pwm-cells":
+    description: |
+      It must be 2. See pwm.yaml in this directory for a
+      description of the cells format.
+    const: 2
+
+  compatible:
+    const: pwm-gpio
+
+  gpios:
+    description:
+      GPIO to be modulated
+    maxItems: 1
+
+required:
+  - "#pwm-cells"
+  - compatible
+  - gpios
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    pwm0 {
+        #pwm-cells = <2>;
+        compatible = "pwm-gpio";
+        gpios = <&gpio 1 GPIO_ACTIVE_HIGH>;
+    };
-- 
2.11.0