Use DT /aliases node to establish a stable phandle to the configuration
EEPROM. This permits the configuration EEPROM to be moved e.g. to a
different address or a different bus. Adjust the board code to handle
new phandle lookup.
Reviewed-by: Patrice Chotard
Reviewed-by: Patrick Delaunay
Signed-off-by: Marek Vasut
Cc: Manivannan Sadhasivam
Cc: Patrick Delaunay
Cc: Patrice Chotard
---
V2: No change
V3: No change
---
arch/arm/dts/stm32mp15xx-dhcom.dtsi | 6 +-
board/dhelectronics/dh_stm32mp1/board.c | 15 +++
2 files changed, 12 insertions(+), 9 deletions(-)
diff --git a/arch/arm/dts/stm32mp15xx-dhcom.dtsi
b/arch/arm/dts/stm32mp15xx-dhcom.dtsi
index bed69c97b6..e5be0a79ac 100644
--- a/arch/arm/dts/stm32mp15xx-dhcom.dtsi
+++ b/arch/arm/dts/stm32mp15xx-dhcom.dtsi
@@ -10,6 +10,10 @@
#include
/ {
+ aliases {
+ eeprom0 = &eeprom0;
+ };
+
memory@c000 {
device_type = "memory";
reg = <0xC000 0x4000>;
@@ -187,7 +191,7 @@
};
};
- eeprom@50 {
+ eeprom0: eeprom@50 {
compatible = "atmel,24c02";
reg = <0x50>;
pagesize = <16>;
diff --git a/board/dhelectronics/dh_stm32mp1/board.c
b/board/dhelectronics/dh_stm32mp1/board.c
index 109d9ec935..a3458a2623 100644
--- a/board/dhelectronics/dh_stm32mp1/board.c
+++ b/board/dhelectronics/dh_stm32mp1/board.c
@@ -78,22 +78,21 @@ DECLARE_GLOBAL_DATA_PTR;
int setup_mac_address(void)
{
- struct udevice *dev;
- ofnode eeprom;
unsigned char enetaddr[6];
- int ret;
+ struct udevice *dev;
+ int off, ret;
ret = eth_env_get_enetaddr("ethaddr", enetaddr);
if (ret)/* ethaddr is already set */
return 0;
- eeprom = ofnode_path("/soc/i2c@5c002000/eeprom@50");
- if (!ofnode_valid(eeprom)) {
- printf("Invalid hardware path to EEPROM!\n");
- return -ENODEV;
+ off = fdt_path_offset(gd->fdt_blob, "eeprom0");
+ if (off < 0) {
+ printf("%s: No eeprom0 path offset\n", __func__);
+ return off;
}
- ret = uclass_get_device_by_ofnode(UCLASS_I2C_EEPROM, eeprom, &dev);
+ ret = uclass_get_device_by_of_offset(UCLASS_I2C_EEPROM, off, &dev);
if (ret) {
printf("Cannot find EEPROM!\n");
return ret;
--
2.25.1
