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

From: Peter Yin
Date: Wed Jun 11 2025 - 04:06:21 EST


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@xxxxxxxxx>
---
.../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