linux-kernel - [PATCH v3 10/10] ARM: dts: at91: sama7g5ek: enable ADC on the board

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Message-ID: <20210901123013.329792-11-eugen.hristev@microchip.com>
Date:   Wed, 1 Sep 2021 15:30:13 +0300
From:   Eugen Hristev <eugen.hristev@...rochip.com>
To:     <jic23@...nel.org>, <linux-iio@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <nicolas.ferre@...rochip.com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <robh+dt@...nel.org>,
        <ludovic.desroches@...rochip.com>,
        Eugen Hristev <eugen.hristev@...rochip.com>
Subject: [PATCH v3 10/10] ARM: dts: at91: sama7g5ek: enable ADC on the board

The ADC controller on the board is fed by a 2.5V reference voltage.
By default the channels #14 and #15 are dedicated to analog input
(marked AN on the board), on the connectors mikrobus1 and mikrobus2.

Signed-off-by: Eugen Hristev <eugen.hristev@...rochip.com>
---
 arch/arm/boot/dts/at91-sama7g5ek.dts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm/boot/dts/at91-sama7g5ek.dts b/arch/arm/boot/dts/at91-sama7g5ek.dts
index 4cbed98cc2f4..c46be165f2ba 100644
--- a/arch/arm/boot/dts/at91-sama7g5ek.dts
+++ b/arch/arm/boot/dts/at91-sama7g5ek.dts
@@ -122,6 +122,14 @@ spdif_out: spdif-out {
 	};
 };
 
+&adc {
+	vddana-supply = <&vddout25>;
+	vref-supply = <&vddout25>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_mikrobus1_an_default &pinctrl_mikrobus2_an_default>;
+	status = "okay";
+};
+
 &cpu0 {
 	cpu-supply = <&vddcpu>;
 };
-- 
2.25.1