From: Fabio Estevam <feste...@denx.de>
Currently the eth0 MAC address is randomly assigned.
Retrieve the MAC address from EEPROM.
Signed-off-by: Fabio Estevam <<feste...@denx.de>
---
arch/arm/dts/imx8mm-cl-iot-gate.dts | 12 ++++-
.../imx8mm-cl-iot-gate/imx8mm-cl-iot-gate.c | 51 +++++++++++++++++++
configs/imx8mm-cl-iot-gate_defconfig | 2 +
3 files changed, 64 insertions(+), 1 deletion(-)
diff --git a/arch/arm/dts/imx8mm-cl-iot-gate.dts
b/arch/arm/dts/imx8mm-cl-iot-gate.dts
index 62e8d0394933..425701204a0c 100644
--- a/arch/arm/dts/imx8mm-cl-iot-gate.dts
+++ b/arch/arm/dts/imx8mm-cl-iot-gate.dts
@@ -17,6 +17,11 @@
stdout-path = &uart3;
};
+ aliases {
+ eeprom0 = &i2c_eeprom0;
+ eeprom1 = &i2c_eeprom1;
+ };
+
reg_vusb_5v: regulator-usdhc2 {
compatible = "regulator-fixed";
regulator-name = "VUSB_5V";
@@ -79,7 +84,7 @@
pinctrl-0 = <&pinctrl_i2c1>;
status = "okay";
- eeprom@54 {
+ i2c_eeprom0: eeprom@54 {
compatible = "atmel,24c08";
reg = <0x54>;
pagesize = <16>;
@@ -92,6 +97,11 @@
pinctrl-0 = <&pinctrl_i2c2>;
status = "okay";
+ i2c_eeprom1: eeprom@50 {
+ compatible = "atmel,24c08";
+ reg = <0x50>;
+ pagesize = <16>;
+ };
rtc@69 {
compatible = "abracon,ab1805";
reg = <0x69>;
diff --git a/board/compulab/imx8mm-cl-iot-gate/imx8mm-cl-iot-gate.c
b/board/compulab/imx8mm-cl-iot-gate/imx8mm-cl-iot-gate.c
index 7e2d88f449ce..779b64b140ad 100644
--- a/board/compulab/imx8mm-cl-iot-gate/imx8mm-cl-iot-gate.c
+++ b/board/compulab/imx8mm-cl-iot-gate/imx8mm-cl-iot-gate.c
@@ -12,6 +12,8 @@
#include <init.h>
#include <miiphy.h>
#include <netdev.h>
+#include <i2c_eeprom.h>
+#include <i2c.h>
#include <asm/arch/clock.h>
#include <asm/arch/imx8mm_pins.h>
@@ -418,12 +420,61 @@ int extension_board_scan(struct list_head *extension_list)
return ret;
}
+static int setup_mac_address(void)
+{
+ unsigned char enetaddr[6];
+ struct udevice *dev;
+ int ret, off;
+
+ ret = eth_env_get_enetaddr("ethaddr", enetaddr);
+ if (ret)
+ return 0;
+
+ off = fdt_path_offset(gd->fdt_blob, "eeprom1");
+ if (off < 0) {
+ printf("No eeprom0 path offset found in DT\n");
+ return off;
+ }
+
+ ret = uclass_get_device_by_of_offset(UCLASS_I2C_EEPROM, off, &dev);
+ if (ret) {
+ printf("%s: Could not find EEPROM\n", __func__);
+ return ret;
+ }
+
+ ret = i2c_set_chip_offset_len(dev, 1);
+ if (ret)
+ return ret;
+
+ ret = i2c_eeprom_read(dev, 4, enetaddr, sizeof(enetaddr));
+ if (ret) {
+ printf("%s: Could not read EEPROM\n", __func__);
+ return ret;
+ }
+
+ ret = is_valid_ethaddr(enetaddr);
+ if (!ret)
+ return -EINVAL;
+
+ ret = eth_env_set_enetaddr("ethaddr", enetaddr);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
int board_late_init(void)
{
+ int ret;
+
if (IS_ENABLED(CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG)) {
env_set("board_name", "IOT-GATE-IMX8");
env_set("board_rev", "SBC-IOTMX8");
}
+ ret = setup_mac_address();
+ if (ret < 0)
+ printf("Cannot set MAC address from EEPROM\n");
+
return 0;
}
diff --git a/configs/imx8mm-cl-iot-gate_defconfig
b/configs/imx8mm-cl-iot-gate_defconfig
index b72f219c786c..ee171f704ed9 100644
--- a/configs/imx8mm-cl-iot-gate_defconfig
+++ b/configs/imx8mm-cl-iot-gate_defconfig
@@ -84,6 +84,8 @@ CONFIG_FASTBOOT_FLASH_MMC_DEV=2
CONFIG_MXC_GPIO=y
CONFIG_DM_I2C=y
CONFIG_DM_KEYBOARD=y
+CONFIG_MISC=y
+CONFIG_I2C_EEPROM=y
CONFIG_SUPPORT_EMMC_RPMB=y
CONFIG_SUPPORT_EMMC_BOOT=y
CONFIG_FSL_USDHC=y
--
2.25.1
