Signed-off-by: Arnaud Ebalard <arno@xxxxxxxxxxxx>
---
Documentation/devicetree/bindings/hwmon/g762.txt | 37 ++++++++++++++++++++++
1 file changed, 37 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwmon/g762.txt
diff --git a/Documentation/devicetree/bindings/hwmon/g762.txt b/Documentation/devicetree/bindings/hwmon/g762.txt
new file mode 100644
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@@ -0,0 +1,37 @@
+GMT G762/G763 PWM Fan controller
+
+Required node properties:
+
+ - "compatible": must be either "gmt,g762" or "gmt,g763"
+ - "reg": I2C bus address of the device
+
+Optional properties:
+
+ - "pwm_mode": fan driving mode. 1 for PWM mode, 0 for linear. Default
+ value is 0, i.e. linear.
+ - "pwm_enable": fan speed control. 1 for open-loop, 2 for closed-loop.
+ Default value is 2, i.e. closed-loop.
+ - "pwm_freq": reference clock frequency for PWM mode in Hz. Default is
+ 32768.
+ - "fan_pulses": number of pulses per fan revolution. Supported values
+ are 2 and 4. Default is 2.
+ - "fan_div": fan clock frequency divisor value. Supported values are
+ 1, 2, 4 and 8. Default is 1.
+ - "fan_target": initial target fan speed in RPM. By default, current
+ value is not modified.
+
+Previous optional properties provides devicetree access to the entries
+described in Documentation/hwmon/g762
+
+Example g762 node:
+
+ g762: g762@3e {
+ compatible = "gmt,g762";
+ reg = <0x3e>;
+ pwm_mode = <1>; /* closed-loop control */
+ pwm_enable = <2>; /* PWM mode */
+ pwm_freq = <8192>; /* PWM reference clock freq */
+ fan_pulses = <2>; /* 2 pulses per rev */
+ fan_div = <2>; /* fan clock divisor */
+ fan_target = <2000>; /* target fan speed at 2000 RPM */
+ };
--
1.7.10.4
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