linux-kernel - [PATCH 1/2] ARM: dts: socfpga: add ltc2497 on arria10 devkit

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Date:   Wed, 24 Apr 2019 10:39:15 -0500
From:   Alan Tull <atull@...nel.org>
To:     Dinh Nguyen <dinguyen@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        delicious.quinoa@...il.com, Alan Tull <atull@...nel.org>
Subject: [PATCH 1/2] ARM: dts: socfpga: add ltc2497 on arria10 devkit

Add the two ltc2497 devices that are on the SoCFPGA Arria10
Socdk board at addresses 0x14 and 0x16.

Signed-off-by: Alan Tull <atull@...nel.org>
---
 arch/arm/boot/dts/socfpga_arria10_socdk.dtsi | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm/boot/dts/socfpga_arria10_socdk.dtsi b/arch/arm/boot/dts/socfpga_arria10_socdk.dtsi
index 360dae5a5b12..0efbeccc5cd2 100644
--- a/arch/arm/boot/dts/socfpga_arria10_socdk.dtsi
+++ b/arch/arm/boot/dts/socfpga_arria10_socdk.dtsi
@@ -48,6 +48,13 @@
 		};
 	};
 
+	ref_033v: 033-v-ref {
+		compatible = "regulator-fixed";
+		regulator-name = "0.33V";
+		regulator-min-microvolt = <330000>;
+		regulator-max-microvolt = <330000>;
+	};
+
 	soc {
 		clkmgr@...04000 {
 			clocks {
@@ -128,6 +135,18 @@
 	i2c-sda-falling-time-ns = <6000>;
 	i2c-scl-falling-time-ns = <6000>;
 
+	adc@14 {
+		compatible = "lltc,ltc2497";
+		reg = <0x14>;
+		vref-supply = <&ref_033v>;
+	};
+
+	adc@16 {
+		compatible = "lltc,ltc2497";
+		reg = <0x16>;
+		vref-supply = <&ref_033v>;
+	};
+
 	eeprom@51 {
 		compatible = "atmel,24c32";
 		reg = <0x51>;
-- 
2.21.0