Documentation: dt: hwmon: Add OF document for LM90

Add OF document for LM90 in Documentation/devicetree/.

[JD: Add this new file to the LM90 MAINTAINERS entry.]

Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

2 files changed, 45 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/hwmon/lm90.txt b/Documentation/devicetree/bindings/hwmon/lm90.txt
new file mode 100644
index 000000000000..e8632486b9ef
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/lm90.txt
@@ -0,0 +1,44 @@
+* LM90 series thermometer.
+
+Required node properties:
+- compatible: manufacturer and chip name, one of
+                "adi,adm1032"
+                "adi,adt7461"
+                "adi,adt7461a"
+                "gmt,g781"
+                "national,lm90"
+                "national,lm86"
+                "national,lm89"
+                "national,lm99"
+                "dallas,max6646"
+                "dallas,max6647"
+                "dallas,max6649"
+                "dallas,max6657"
+                "dallas,max6658"
+                "dallas,max6659"
+                "dallas,max6680"
+                "dallas,max6681"
+                "dallas,max6695"
+                "dallas,max6696"
+                "onnn,nct1008"
+                "winbond,w83l771"
+                "nxp,sa56004"
+
+- reg: I2C bus address of the device
+
+- vcc-supply: vcc regulator for the supply voltage.
+
+Optional properties:
+- interrupts: Contains a single interrupt specifier which describes the
+              LM90 "-ALERT" pin output.
+              See interrupt-controller/interrupts.txt for the format.
+
+Example LM90 node:
+
+temp-sensor {
+        compatible = "onnn,nct1008";
+        reg = <0x4c>;
+        vcc-supply = <&palmas_ldo6_reg>;
+        interrupt-parent = <&gpio>;
+        interrupts = <TEGRA_GPIO(O, 4) IRQ_TYPE_LEVEL_LOW>;
+}
diff --git a/MAINTAINERS b/MAINTAINERS
index ffcaf975bed7..0da69578ccee 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5175,6 +5175,7 @@ M:	Jean Delvare <khali@linux-fr.org>
 L:      lm-sensors@lm-sensors.org
 S:      Maintained
 F:      Documentation/hwmon/lm90
+F:      Documentation/devicetree/bindings/hwmon/lm90.txt
 F:      drivers/hwmon/lm90.c
 
 LM95234 HARDWARE MONITOR DRIVER