linux-kernel - [PATCH v2 3/5] ARM: dts: aspeed: harma: add ADC128D818 for voltage monitoring

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Message-Id: <20250611080514.3123335-4-peteryin.openbmc@gmail.com>
Date: Wed, 11 Jun 2025 16:05:12 +0800
From: Peter Yin <peteryin.openbmc@...il.com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Joel Stanley <joel@....id.au>,
	Andrew Jeffery <andrew@...econstruct.com.au>,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-aspeed@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org
Cc: peteryin.openbmc@...il.com
Subject: [PATCH v2 3/5] ARM: dts: aspeed: harma: add ADC128D818 for voltage monitoring

Add the ADC128D818 device to I2C bus 29 to support voltage monitoring
on the Harma platform. This enables accurate measurement of system
voltages through the onboard ADC.

Signed-off-by: Peter Yin <peteryin.openbmc@...il.com>
---
 .../boot/dts/aspeed/aspeed-bmc-facebook-harma.dts   | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-harma.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-harma.dts
index 344e20394665..25b873ace2ea 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-harma.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-harma.dts
@@ -529,6 +529,19 @@ eeprom@54 {
 				compatible = "atmel,24c64";
 				reg = <0x54>;
 			};
+
+			adc@1d {
+				compatible = "ti,adc128d818";
+				reg = <0x1d>;
+				ti,mode = /bits/ 8 <1>;
+			};
+
+			adc@1f {
+				compatible = "ti,adc128d818";
+				reg = <0x1f>;
+				ti,mode = /bits/ 8 <1>;
+			};
+
 		};
 		imux30: i2c@2 {
 			#address-cells = <1>;
-- 
2.25.1