On 09/20/2018 05:07 PM, Nicolin Chen wrote:
Texas Instruments INA3221 is a triple-channel shunt and bus
voltage monitor. This patch adds a DT binding doc for it.
Signed-off-by: Nicolin Chen <[email protected]>
---
.../devicetree/bindings/hwmon/ina3221.txt | 23 +++++++++++++++++++
1 file changed, 23 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwmon/ina3221.txt
diff --git a/Documentation/devicetree/bindings/hwmon/ina3221.txt
b/Documentation/devicetree/bindings/hwmon/ina3221.txt
new file mode 100644
index 000000000000..266c9586c9b1
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/ina3221.txt
@@ -0,0 +1,23 @@
+ina3221 properties
+
+Required properties:
+- compatible: Must be "ti,ina3221"
+- reg: I2C address
+
+Optional properties:
+
+- ti,channel1-name:
+- ti,channel2-name:
+- ti,channel3-name:
+ The names of the input sources (described in the schematics)
+ Set the names with "NC" to indicate not-connected channels
+
I don't really think this is a good idea - first to specify sensor
names this way, and much less specifying that "NC" means that a sensor
shall be disconnected/disabled.
Also, if we define devicetree support for this chip, it should include
all configuration options required to configure it. This should at
the very least include shunt resistor values.
Thanks,
Guenter
+Example:
+
+ina3221@40 {
+ compatible = "ti,ina3221";
+ reg = <0x40>;
+ ti,channel1-name = "NC";
+ ti,channel2-name = "VDD_5V0_EXT";
+ ti,channel3-name = "VDD_19V";
+};
