From: Fabio Estevam <festevam@gmail.com>
Date: Fri, 24 Sep 2021 13:46:43 +0000 (-0300)
Subject: ARM: dts: imx6qdl-apalis: Pass 'io-channel-cells' to the ADC
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=cdbaba8d72dd68bab1185fe121f64bbf2d71eac2;p=linux.git

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

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>
---

diff --git a/arch/arm/boot/dts/imx6qdl-apalis.dtsi b/arch/arm/boot/dts/imx6qdl-apalis.dtsi
index 7c6d9c75d2bf1..4092af5f6999c 100644
--- a/arch/arm/boot/dts/imx6qdl-apalis.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-apalis.dtsi
@@ -330,10 +330,11 @@
 			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>;
 		};
 	};
 };