[PATCH v2 4/5] imx8mn-var-som: read eth MAC address from EEPROM

Hugo Villeneuve
2023-05-25T21:04:33Z

Read ethernet MAC address from EEPROM located on the SOM.

Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
---
arch/arm/dts/imx8mn-var-som-symphony-u-boot.dtsi | 13 +++++++++++++
arch/arm/mach-imx/imx8m/Kconfig | 1 +
2 files changed, 14 insertions(+)

diff --git a/arch/arm/dts/imx8mn-var-som-symphony-u-boot.dtsi b/arch/arm/dts/imx8mn-var-som-symphony-u-boot.dtsi
index 7272fc2b4c..e0caf3179e 100644
--- a/arch/arm/dts/imx8mn-var-som-symphony-u-boot.dtsi
+++ b/arch/arm/dts/imx8mn-var-som-symphony-u-boot.dtsi
@@ -13,6 +13,19 @@
bootph-pre-ram;
};

+&eeprom_som {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ eth_mac_address: eth-mac-address@19 {
+ reg = <0x19 0x06>;
+ };
+};
+
+&fec1 {
+ nvmem-cells = <&eth_mac_address>;
+ nvmem-cell-names = "mac-address";
+};
+
&gpio1 {
bootph-pre-ram;
};
diff --git a/arch/arm/mach-imx/imx8m/Kconfig b/arch/arm/mach-imx/imx8m/Kconfig
index a940d8a950..67db3e46ec 100644
--- a/arch/arm/mach-imx/imx8m/Kconfig
+++ b/arch/arm/mach-imx/imx8m/Kconfig
@@ -248,6 +248,7 @@ config TARGET_IMX8MN_VAR_SOM
select MISC
select I2C_EEPROM
select DM_ETH_PHY
+ select NVMEM

config TARGET_KONTRON_PITX_IMX8M
bool "Support Kontron pITX-imx8m"
--
2.30.2