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ARM: dts: imx6qdl-apalis: Pass 'io-channel-cells' to the ADC

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The STMPE811 ADC on the Apalis SoM board can be used as a provider
of ADC capabilities to other devices, for example, when a custom
baseboard has an SN74LV4051 analog mux.

Pass the 'io-channel-cells' parameter to indicate such possibility.

While at it, also pass a label for the adc device, so that it can
be referenced in the custom baseboard.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Fabio Estevam
2021-09-24 10:46:43 -03:00
committed by Shawn Guo
parent 56086b5e80
commit cdbaba8d72
1 changed files with 2 additions and 1 deletions
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3
arch/arm/boot/dts/imx6qdl-apalis.dtsi
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@@ -330,10 +330,11 @@ stmpe-touchscreen {
st,touch-det-delay = <5>;
};
stmpe-adc {
stmpe_adc: stmpe-adc {
compatible = "st,stmpe-adc";
/* forbid to use ADC channels 3-0 (touch) */
st,norequest-mask = <0x0F>;
#io-channel-cells = <1>;
};
};
};