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Message-Id: <20211009104309.45117-1-david@ixit.cz>
Date: Sat, 9 Oct 2021 12:43:09 +0200
From: David Heidelberg <david@...t.cz>
To: Rob Herring <robh+dt@...nel.org>,
Guenter Roeck <linux@...ck-us.net>,
Jean Delvare <jdelvare@...e.com>
Cc: linux-hwmon@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, ~okias/devicetree@...ts.sr.ht,
David Heidelberg <david@...t.cz>
Subject: [PATCH] WIP: dt-bindings: arm: hwmon: gpio-fan: Convert txt bindings to yaml
Convert fan devices connected to GPIOs to the YAML syntax.
Signed-off-by: David Heidelberg <david@...t.cz>
---
.../devicetree/bindings/hwmon/gpio-fan.txt | 41 -----------
.../devicetree/bindings/hwmon/gpio-fan.yaml | 69 +++++++++++++++++++
2 files changed, 69 insertions(+), 41 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/hwmon/gpio-fan.txt
create mode 100644 Documentation/devicetree/bindings/hwmon/gpio-fan.yaml
diff --git a/Documentation/devicetree/bindings/hwmon/gpio-fan.txt b/Documentation/devicetree/bindings/hwmon/gpio-fan.txt
deleted file mode 100644
index f4cfa350f6a1..000000000000
--- a/Documentation/devicetree/bindings/hwmon/gpio-fan.txt
+++ /dev/null
@@ -1,41 +0,0 @@
-Bindings for fan connected to GPIO lines
-
-Required properties:
-- compatible : "gpio-fan"
-
-Optional properties:
-- gpios: Specifies the pins that map to bits in the control value,
- ordered MSB-->LSB.
-- gpio-fan,speed-map: A mapping of possible fan RPM speeds and the
- control value that should be set to achieve them. This array
- must have the RPM values in ascending order.
-- alarm-gpios: This pin going active indicates something is wrong with
- the fan, and a udev event will be fired.
-- #cooling-cells: If used as a cooling device, must be <2>
- Also see:
- Documentation/devicetree/bindings/thermal/thermal-cooling-devices.yaml
- min and max states are derived from the speed-map of the fan.
-
-Note: At least one the "gpios" or "alarm-gpios" properties must be set.
-
-Examples:
-
- gpio_fan {
- compatible = "gpio-fan";
- gpios = <&gpio1 14 1
- &gpio1 13 1>;
- gpio-fan,speed-map = <0 0
- 3000 1
- 6000 2>;
- alarm-gpios = <&gpio1 15 1>;
- };
- gpio_fan_cool: gpio_fan {
- compatible = "gpio-fan";
- gpios = <&gpio2 14 1
- &gpio2 13 1>;
- gpio-fan,speed-map = <0 0>,
- <3000 1>,
- <6000 2>;
- alarm-gpios = <&gpio2 15 1>;
- #cooling-cells = <2>; /* min followed by max */
- };
diff --git a/Documentation/devicetree/bindings/hwmon/gpio-fan.yaml b/Documentation/devicetree/bindings/hwmon/gpio-fan.yaml
new file mode 100644
index 000000000000..e2db65d58a92
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/gpio-fan.yaml
@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/hwmon/gpio-fan.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Bindings for fan connected to GPIO lines
+
+maintainers:
+ - Rob Herring <robh+dt@...nel.org>
+
+properties:
+ compatible:
+ const: gpio-fan
+
+ gpios:
+ description: |
+ Specifies the pins that map to bits in the control value,
+ ordered MSB-->LSB.
+
+ gpio-fan,speed-map:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ minItems: 4
+ maxItems: 254
+ description: |
+ A mapping of possible fan RPM speeds and the
+ control value that should be set to achieve them. This array
+ must have the RPM values in ascending order.
+
+ alarm-gpios:
+ description: |
+ This pin going active indicates something is wrong with
+ the fan, and a udev event will be fired.
+
+ '#cooling-cells':
+ const: 2
+
+required:
+ - compatible
+ - gpio-fan,speed-map
+
+anyOf:
+ - required: [gpios]
+ - required: [alarm-gpios]
+
+additionalProperties: false
+
+examples:
+ - |
+ gpio_fan {
+ compatible = "gpio-fan";
+ gpios = <&gpio1 14 1
+ &gpio1 13 1>;
+ gpio-fan,speed-map = <0 0
+ 3000 1
+ 6000 2>;
+ alarm-gpios = <&gpio1 15 1>;
+ };
+ - |
+ gpio_fan_cool: gpio_fan {
+ compatible = "gpio-fan";
+ gpios = <&gpio2 14 1
+ &gpio2 13 1>;
+ gpio-fan,speed-map = <0 0
+ 3000 1
+ 6000 2>;
+ alarm-gpios = <&gpio2 15 1>;
+ #cooling-cells = <2>; /* min followed by max */
+ };
--
2.33.0
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