[PATCH v5 05/15] ARM: dts: aspeed: anacapa: Add additional EEPROM node for SCM

Colin Huang via B4 Relay devnull+u8813345.gmail.com at kernel.org
Thu Aug 13 04:59:35 PDT 2026


From: Colin Huang <u8813345 at gmail.com>

The SCM FRU EEPROM I2C address differs between SCM revisions:
- Rev B uses address 0x50
- Rev C/D/E/F and later use address 0x51

Add an additional AT24C128 EEPROM node at 0x51 on i2c9 so the same
device tree can support multiple SCM revisions.

Signed-off-by: Colin Huang <u8813345 at gmail.com>
---
 .../boot/dts/aspeed/aspeed-bmc-facebook-anacapa-evt2.dts   | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-anacapa-evt2.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-anacapa-evt2.dts
index 4a6ae7c6cbf8..1901a325c72c 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-anacapa-evt2.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-anacapa-evt2.dts
@@ -8,6 +8,20 @@ / {
 	compatible = "facebook,anacapa-bmc-evt2", "aspeed,ast2600";
 };
 
+// SCM
+&i2c9 {
+
+	// SCM FRU
+	// | DC-SCM Rev        | Slave address of eeprom  |
+	// |-------------------|--------------------------|
+	// | Rev B             | 0x50                     |
+	// | Rev C/D/E/F/above | 0x51                     |
+	eeprom at 51 {
+		compatible = "atmel,24c128";
+		reg = <0x51>;
+	};
+};
+
 &sgpiom0 {
 	ngpios = <128>;
 	bus-frequency = <2000000>;

-- 
2.34.1





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