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| author | Quentin Schulz <quentin.schulz@free-electrons.com> | 2018-01-15 11:33:36 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2018-01-30 18:33:23 +0000 |
| commit | 22042a6e694db118cdb27e8a9ead21df046458df (patch) | |
| tree | 6883c7f0f06f2a2bb9f3fbad5eb4c921bebb8ba1 /Documentation | |
| parent | 0659ecb5dfc10e4bb771d72e8b1b5c429f612082 (diff) | |
| download | linux-22042a6e694db118cdb27e8a9ead21df046458df.tar.gz linux-22042a6e694db118cdb27e8a9ead21df046458df.tar.bz2 linux-22042a6e694db118cdb27e8a9ead21df046458df.zip | |
dt-bindings: iio: adc: add binding for X-Powers AXP PMICs ADC
X-Powers PMICs have several ADC channels that can be used for different
purposes, e.g. PMIC internal temperature, battery voltage or AC current.
This is the documentation for AXP209, AXP221/223 and AXP813 ADC
bindings.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/iio/adc/axp20x_adc.txt | 48 |
1 files changed, 48 insertions, 0 deletions
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 000000000000..7a6313913923 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/axp20x_adc.txt @@ -0,0 +1,48 @@ +* X-Powers AXP ADC bindings + +Required properties: + - compatible: should be one of: + - "x-powers,axp209-adc", + - "x-powers,axp221-adc", + - "x-powers,axp813-adc", + - #io-channel-cells: should be 1, + +Example: + +&axp22x { + adc { + compatible = "x-powers,axp221-adc"; + #io-channel-cells = <1>; + }; +}; + +ADC channels and their indexes per variant: + +AXP209 +------ + 0 | acin_v + 1 | acin_i + 2 | vbus_v + 3 | vbus_i + 4 | pmic_temp + 5 | gpio0_v + 6 | gpio1_v + 7 | ipsout_v + 8 | batt_v + 9 | batt_chrg_i +10 | batt_dischrg_i + +AXP22x +------ + 0 | pmic_temp + 1 | batt_v + 2 | batt_chrg_i + 3 | batt_dischrg_i + +AXP813 +------ + 0 | pmic_temp + 1 | gpio0_v + 2 | batt_v + 3 | batt_chrg_i + 4 | batt_dischrg_i |