[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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