On Tue, Oct 13, 2020 at 06:32:45PM +0800, Billy Tsai wrote:
> At ast2600 ref_voltage becomes configurable and this property is board
> dependency.
>
> Signed-off-by: Billy Tsai <billy_tsai@xxxxxxxxxxxxxx>
> ---
> .../devicetree/bindings/iio/adc/aspeed_adc.txt | 16 +++++++++++++++-
> 1 file changed, 15 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/iio/adc/aspeed_adc.txt b/Documentation/devicetree/bindings/iio/adc/aspeed_adc.txt
> index 034fc2ba100e..0ba1980c4e06 100644
> --- a/Documentation/devicetree/bindings/iio/adc/aspeed_adc.txt
> +++ b/Documentation/devicetree/bindings/iio/adc/aspeed_adc.txt
> @@ -3,8 +3,11 @@ Aspeed ADC
> This device is a 10-bit converter for 16 voltage channels. All inputs are
> single ended.
>
> +At ast2600, this device split into two individual IPs and each contains 8 voltage channels.
> +
> +Chip level dtsi:
> Required properties:
> -- compatible: Should be "aspeed,ast2400-adc" or "aspeed,ast2500-adc"
> +- compatible: Should be "aspeed,ast2400-adc" or "aspeed,ast2500-adc" or "aspeed,ast2600-adc"
> - reg: memory window mapping address and length
> - clocks: Input clock used to derive the sample clock. Expected to be the
> SoC's APB clock.
> @@ -20,3 +23,14 @@ Example:
> resets = <&syscon ASPEED_RESET_ADC>;
> #io-channel-cells = <1>;
> };
> +
> +Board level dts:
This split is convention, but not relevant to the binding.
> +Required properties:
> +- ref_voltage: (ast2600 only)
s/_/-/
And needs a vendor prefix.
> + - Reference voltage in millivolts for the conversions.
> + - The range of value is 900 to 2700 mv.
> +
> +Example:
> +&adc0 {
> + ref_voltage = <2500>;
> +};
> \ No newline at end of file
Fix this.
> --
> 2.17.1
>
