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Date: Mon, 26 Oct 2015 22:24:17 +0200
From: Constantine Shulyupin <const@...elinux.com>
To: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
lm-sensors@...sensors.org, Arnd Bergmann <arnd@...db.de>,
Jean Delvare <jdelvare@...e.com>,
Guenter Roeck <linux@...ck-us.net>,
Rob Herring <robh+dt@...nel.org>,
Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>
Cc: Constantine Shulyupin <const@...eLinux.com>
Subject: [PATCH v8] Documentation: add Device tree bindings for hwmon/nct7802
From: Constantine Shulyupin <const@...eLinux.com>
Introduced subnodes sensor, fan and peci with properties.
Signed-off-by: Constantine Shulyupin <const@...eLinux.com>
---
Changed in v8:
- added senor type "local"
- Compatible nodes converted to senor types "vcore", "vcc"
Changed in v7:
- sensors type (thermistor, thermistor, voltage) and pwm type
selected with type property instead of compatible property.
Changed in v6:
- Removed previous definition.
- Introduced subnodes sensor, fan and peci with properties.
Changed in v5:
- Fixed typos
Changed in v4:
- Removed registers initialization by names
- Added properties nuvoton,sensor*-type
Changed in v3:
- Fixed vendor prefix
- Added short registers description,
full registers description is available at
https://www.nuvoton.com/hq/products/cloud-computing/hardware-monitors/desktop-server-series/nct7802y/
Changed in v2:
- Removed nct7802,reg-init
- Added registers initialization by names
Introduced in v1:
- nct7802,reg-init
---
.../devicetree/bindings/hwmon/nct7802.txt | 102 +++++++++++++++++++++
1 file changed, 102 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwmon/nct7802.txt
diff --git a/Documentation/devicetree/bindings/hwmon/nct7802.txt b/Documentation/devicetree/bindings/hwmon/nct7802.txt
new file mode 100644
index 0000000..8647783
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/nct7802.txt
@@ -0,0 +1,102 @@
+Nuvoton NCT7802Y Hardware Monitoring IC
+
+Required node properties:
+
+ - "compatible": must be "nuvoton,nct7802"
+ - "reg": I2C bus address of the device
+ - #address-cells=<1>;
+ - #size-cells=<0>;
+
+Optional subnodes:
+
+Sensor subnodes properties:
+ - "compatible", allowed values:
+ - "nuvoton,nct7802"
+ - "sensor-type", allowed values:
+ "thermal-diode"
+ "thermistor"
+ "voltage"
+ "local"
+ "vcore"
+ "vcc"
+For sensors of types "thermal-diode", "thermistor" and "voltage" required
+ - "reg": index in range 0 .. 2
+
+Except sensor at address 2 can't be "thermal-diode".
+
+Fan subnode:
+
+Required properties:
+ - "reg" :index of in range 0 .. 2.
+ - "compatible", should be "nuvoton,nct7802-fan"
+Optional boolean properties:
+ - "direct-current" :direct current powered fan instead default PWM
+ - "invert" :inverted polarity
+ - "open-drain" :open-drain output instead push pull
+
+Subnode "peci" properties:
+ - "reg" :index in range 0 .. 1
+ - "compatible", should be "nuvoton,nct7802-peci"
+
+Not defined sensors, fans and PECI modules will be disabled.
+
+Example nct7802 node:
+
+nct7802-example@28 {
+ compatible = "nuvoton,nct7802";
+ reg = <0x28>;
+ #address-cells=<1>;
+ #size-cells=<0>;
+ local-sensor {
+ compatible = "nuvoton,nct7802-sensor";
+ sensor-type = "local";
+ };
+ sensor@0 {
+ compatible = "nuvoton,nct7802-sensor";
+ reg = <0>;
+ sensor-type = "thermal-diode";
+ };
+ sensor@1 {
+ compatible = "nuvoton,nct7802-sensor";
+ reg = <1>;
+ sensor-type = "thermistor";
+ };
+ sensor@2 {
+ compatible = "nuvoton,nct7802-sensor";
+ reg = <2>;
+ sensor-type = "voltage";
+ };
+ vcc {
+ compatible = "nuvoton,nct7802-sensor";
+ sensor-type = "vcc";
+ };
+ vcore {
+ compatible = "nuvoton,nct7802-sensor";
+ sensor-type = "vcore";
+ };
+ pwm-fan@0 {
+ compatible = "nuvoton,nct7802-fan";
+ reg = <0>;
+ };
+ dc-fan@1 {
+ compatible = "nuvoton,nct7802-fan";
+ reg = <1>;
+ direct-current;
+ open-drain;
+ invert;
+ };
+ fan@2 {
+ compatible = "nuvoton,nct7802-fan";
+ reg = <2>;
+ open-drain;
+ invert;
+ };
+ peci@0 {
+ compatible = "nuvoton,nct7802-peci";
+ reg = <0>;
+ };
+ peci@1 {
+ compatible = "nuvoton,nct7802-peci";
+ reg = <1>;
+ };
+};
--
1.9.1
--
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