The X-Powers AXP20X and AXP22X PMICs have multiple ADCs. They expose the
battery voltage, battery charge and discharge currents, AC-in and VBUS
voltages and currents, 2 GPIOs muxable in ADC mode and PMIC temperature.
This adds the device tree binding documentation for the X-Powers AXP20X
and AXP22X PMICs ADCs.
Signed-off-by: Quentin Schulz <quentin.schulz@xxxxxxxxxxxxxxxxxx>
Acked-by: Rob Herring <robh@xxxxxxxxxx>
Acked-by: Chen-Yu Tsai <wens@xxxxxxxx>
Acked-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>
---
v2:
- removing io-channels from required properties,
- update AXP ADC DT node name from axp209_adc to simply adc,
.../devicetree/bindings/iio/adc/axp20x_adc.txt | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/adc/axp20x_adc.txt
diff --git a/Documentation/devicetree/bindings/iio/adc/axp20x_adc.txt b/Documentation/devicetree/bindings/iio/adc/axp20x_adc.txt
new file mode 100644
index 0000000..a071247
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/axp20x_adc.txt
@@ -0,0 +1,22 @@
+X-Powers AXP20X and AXP22X PMIC Analog to Digital Converter (ADC)
+
+The X-Powers AXP20X and AXP22X PMICs have multiple ADCs. They expose the
+battery voltage, battery charge and discharge currents, AC-in and VBUS
+voltages and currents, 2 GPIOs muxable in ADC mode and PMIC temperature.
+
+The AXP22X PMICs do not have all ADCs of the AXP20X though.
+
+Required properties:
+ - compatible, one of:
+ "x-powers,axp209-adc"
+ "x-powers,axp221-adc"
+
+This is a subnode of the AXP20X PMIC.
+
+Example:
+
+&axp209 {
+ axp209_adc: adc {
+ compatible = "x-powers,axp209-adc";
+ };
+};
--
2.9.3
--
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