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@gmail.com>
Link: https://patch.msgid.link/20250611080514.3123335-4-peteryin.openbmc@gmail.com
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>

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 344e20394665cfc9b75df5eeeef71791896c748a..25b873ace2eac862c048d6671602c7f09bfdba5a 100644 (file)
--- 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 @@
                                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>;