linux-stable/Documentation/devicetree/bindings/hwmon/adc128d818.txt
Carlos Menin d3b018f757 dt-bindings: hwmon: (adc128d818) Specify ti,mode property size
By default, cells in DT are 32-bit in size. The driver reads "ti,mode"
using the function of_property_read_u8() which causes the value to be
read incorrectly in little-endian architectures if the size is not
specified.

Make it explicit in the binding documentation that this prorperty must
be set as a 8-bit value.

Signed-off-by: Carlos Menin <menin@carlosaurelio.net>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-03-29 09:52:00 -07:00

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Text

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 keeps the
currently active chip operation mode (default is mode 0).
Required node properties:
- compatible: must be set to "ti,adc128d818"
- reg: I2C address of the device
Optional node properties:
- ti,mode: Operation mode (u8) (see above).
Example (operation mode 2):
adc128d818@1d {
compatible = "ti,adc128d818";
reg = <0x1d>;
ti,mode = /bits/ 8 <2>;
};