Commit 27be1f64 authored Nov 04, 2018 by Martin Blumenstingl Committed by Jonathan Cameron Nov 11, 2018

dt-bindings: iio: adc: meson-saradc: add temperature sensor support

The 32-bit Meson8 SoC can use the SAR ADC to read the chip temperature.
This requires setting the correct TSC (temperature sensor coefficient),
which is programmed into the eFuse during the manufacturing process.
Meson8b and Meson8m2 are not supported yet because they have a 5-bit TSC
and only the first four bits are stored inside the SAR ADC registers.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

parent addacf3b

Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.txt

+6 −0

Original line number	Diff line number	Diff line
		@@ -22,6 +22,12 @@ Required properties:
		- vref-supply: the regulator supply for the ADC reference voltage
		- #io-channel-cells: must be 1, see ../iio-bindings.txt

		Optional properties:
		- nvmem-cells: phandle to the temperature_calib eFuse cells
		- nvmem-cell-names: if present (to enable the temperature sensor
		calibration) this must contain "temperature_calib"


		Example:
		saradc: adc@8680 {
		compatible = "amlogic,meson-gxl-saradc", "amlogic,meson-saradc";

Admin message