Messages in this thread Patch in this message | | | From | Billy Tsai <> | Subject | [v2 2/8] dt-bindings: iio: adc: Binding ast2600 adc. | Date | Fri, 23 Jul 2021 16:16:15 +0800 |
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This patch add more description about aspeed adc and add two property for ast2600: - vref: used to configure reference voltage. - battery-sensing: used to enable battery sensing mode for last channel.
Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com> --- .../bindings/iio/adc/aspeed,adc.yaml | 28 +++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/iio/adc/aspeed,adc.yaml b/Documentation/devicetree/bindings/iio/adc/aspeed,adc.yaml index 23f3da1ffca3..a562a7fbc30c 100644 --- a/Documentation/devicetree/bindings/iio/adc/aspeed,adc.yaml +++ b/Documentation/devicetree/bindings/iio/adc/aspeed,adc.yaml @@ -10,14 +10,26 @@ maintainers: - Joel Stanley <joel@jms.id.au> description: - This device is a 10-bit converter for 16 voltage channels. All inputs are - single ended. + • 10-bits resolution for 16 voltage channels. + At ast2400/ast2500 the device has only one engine with 16 voltage channels. + At ast2600 the device split into two individual engine and each contains 8 voltage channels. + • Channel scanning can be non-continuous. + • Programmable ADC clock frequency. + • Programmable upper and lower bound for each channels. + • Interrupt when larger or less than bounds for each channels. + • Support hysteresis for each channels. + • Buildin a compensating method. + Additional feature at ast2600 + • Internal or External reference voltage. + • Support 2 Internal reference voltage 1.2v or 2.5v. + • Integrate dividing circuit for battery sensing. properties: compatible: enum: - aspeed,ast2400-adc - aspeed,ast2500-adc + - aspeed,ast2600-adc reg: maxItems: 1 @@ -33,6 +45,18 @@ properties: "#io-channel-cells": const: 1 + vref: + minItems: 900 + maxItems: 2700 + default: 2500 + description: + ADC Reference voltage in millivolts. + + battery-sensing: + type: boolean + description: + Inform the driver that last channel will be used to sensor battery. + required: - compatible - reg -- 2.25.1
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