Re: [RFC PATCH v2 1/4] devicetree: hwmon: Add bindings for ADC128D818
From: Rob Herring <robh@kernel.org>
Date: 2017-01-03 15:38:15
Also in:
linux-hwmon, lkml
On Fri, Dec 23, 2016 at 11:12:02PM +0100, Alexander Koch wrote:
quoted hunk ↗ jump to hunk
Add bindings documentation for the ADC128D818 driver, featuring default I2C properties along with the optional 'mode' property for chip operation mode selection (see datasheet, sec. 8.4.1). Signed-off-by: Alexander Koch <redacted> --- .../devicetree/bindings/hwmon/adc128d818.txt | 39 ++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwmon/adc128d818.txtdiff --git a/Documentation/devicetree/bindings/hwmon/adc128d818.txt b/Documentation/devicetree/bindings/hwmon/adc128d818.txt new file mode 100644 index 000000000000..5e14aa36a696 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/adc128d818.txt@@ -0,0 +1,39 @@ +TI ADC128D818 ADC System Monitor With Temperature Sensor +-------------------------------------------------------- + +Operation modes: + + - Mode 0: 7 single-ended voltage readings (IN0-IN6), + 1 temperature reading (internal) + - Mode 1: 8 single-ended voltage readings (IN0-IN7), + no temperature + - Mode 2: 4 pseudo-differential voltage readings + (IN0-IN1, IN3-IN2, IN4-IN5, IN7-IN6), + 1 temperature reading (internal) + - Mode 3: 4 single-ended voltage readings (IN0-IN3), + 2 pseudo-differential voltage readings + (IN4-IN5, IN7-IN6), + 1 temperature reading (internal) + +If no operation mode is configured via device tree, the driver defaults +to Mode 0. + + +Required node properties: + + - compatible: must be set to "ti,adc128d818" + - reg: I2C address of the device + +Optional node properties: + + - mode: Operation mode (see above).
Needs a vendor prefix.
+
+
+Example (operation mode 2):
+
+ adc128d818@1d {
+ compatible = "ti,adc128d818";
+ reg = <0x1d>;
+ mode = /bits/ 8 <2>;Need to specify above this is an 8-bit value. Or just drop the size here as there's little gain to use a byte here.
+ }; + -- 2.11.0