From: Alan Tull <at...@opensource.altera.com>

Add device tree bindings documentation for ltc2978.

Signed-off-by: Alan Tull <at...@opensource.altera.com>
---
v2: clean whitespace
---
 .../devicetree/bindings/hwmon/ltc2978.txt          |   41 ++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/hwmon/ltc2978.txt

diff --git a/Documentation/devicetree/bindings/hwmon/ltc2978.txt 
b/Documentation/devicetree/bindings/hwmon/ltc2978.txt
new file mode 100644
index 0000000..b2d9c4d
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/ltc2978.txt
@@ -0,0 +1,41 @@
+ltc2978
+
+Required properties:
+ - compatible: one of: ltc2974, ltc2977, ltc2978, ltc3880, ltc3883, ltm4676
+ - reg: I2C address
+
+Optional properties:
+ Name of the optional regulator subnode must be "regulators".
+  - #address-cells must be 1.
+  - #size-cells must be 0.
+
+ For each regulator:
+  - reg: regulator number
+  - regulator-compatible: must be vout_en<regulator number> such as vout_en3
+    valid range is:
+      ltc2977, ltc2978 : vout_en0 - vout_en7
+      ltc2974          : vout_en0 - vout_en3
+      ltc3880, ltm4676 : vout_en0 - vout_en1
+      ltc3883          : vout_en0 only
+  - regulator-name: arbitrary name for regulator
+
+Example:
+ltc2978@5e {
+       compatible = "ltc2978";
+       reg = <0x5e>;
+       regulators {
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               vdacp0_reg: regulator@0 {
+                       reg = <0>;
+                       regulator-compatible = "vout_en0";
+                       regulator-name = "FPGA-2.5V";
+               };
+               vdacp2_reg: regulator@2 {
+                       reg = <2>;
+                       regulator-compatible = "vout_en2";
+                       regulator-name = "FPGA-1.5V";
+               };
+       };
+};
-- 
1.7.9.5

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