[PATCH v4 13/16] test: Load mac address with i2c eeprom

[Sean Anderson]

This uses an i2c eeprom to load a mac address using the nvmem interface.
Enable I2C_EEPROM for sandbox SPL since it is the only sandbox config
which doesn't enable it eeprom.

Signed-off-by: Sean Anderson <sean.anderson at seco.com>
Reviewed-by: Simon Glass <sjg at chromium.org>
---

Changes in v4:
- Enable CONFIG_I2C_EEPROM for sandbox_spl_defconfig

 arch/sandbox/dts/test.dts      | 9 ++++++++-
 configs/sandbox_spl_defconfig  | 1 +
 drivers/misc/i2c_eeprom_emul.c | 4 ++++
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index 318dc2dcb1..9aed071aa0 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -538,7 +538,8 @@
 	eth_3: sbe5 {
 		compatible = "sandbox,eth";
 		reg = <0x10005000 0x1000>;
-		mac-address = [ 02 00 11 22 33 45 ];
+		nvmem-cells = <&eth3_addr>;
+		nvmem-cell-names = "mac-address";
 	};
 
 	eth at 10004000 {
@@ -701,6 +702,8 @@
 		pinctrl-0 = <&pinmux_i2c0_pins>;
 
 		eeprom at 2c {
+			#address-cells = <1>;
+			#size-cells = <1>;
 			reg = <0x2c>;
 			compatible = "i2c-eeprom";
 			sandbox,emul = <&emul_eeprom>;
@@ -712,6 +715,10 @@
 					reg = <10 2>;
 				};
 			};
+
+			eth3_addr: mac-address at 24 {
+				reg = <24 6>;
+			};
 		};
 
 		rtc_0: rtc at 43 {
diff --git a/configs/sandbox_spl_defconfig b/configs/sandbox_spl_defconfig
index 0a32311f77..78d295f1f8 100644
--- a/configs/sandbox_spl_defconfig
+++ b/configs/sandbox_spl_defconfig
@@ -154,6 +154,7 @@ CONFIG_CROS_EC_SPI=y
 CONFIG_P2SB=y
 CONFIG_PWRSEQ=y
 CONFIG_SPL_PWRSEQ=y
+CONFIG_I2C_EEPROM=y
 CONFIG_MMC_SANDBOX=y
 CONFIG_SPI_FLASH_SANDBOX=y
 CONFIG_SPI_FLASH_ATMEL=y
diff --git a/drivers/misc/i2c_eeprom_emul.c b/drivers/misc/i2c_eeprom_emul.c
index 85b127c406..6f32087ede 100644
--- a/drivers/misc/i2c_eeprom_emul.c
+++ b/drivers/misc/i2c_eeprom_emul.c
@@ -171,11 +171,15 @@ static int sandbox_i2c_eeprom_probe(struct udevice *dev)
 {
 	struct sandbox_i2c_flash_plat_data *plat = dev_get_plat(dev);
 	struct sandbox_i2c_flash *priv = dev_get_priv(dev);
+	/* For eth3 */
+	const u8 mac[] = { 0x02, 0x00, 0x11, 0x22, 0x33, 0x45 };
 
 	priv->data = calloc(1, plat->size);
 	if (!priv->data)
 		return -ENOMEM;
 
+	memcpy(&priv->data[24], mac, sizeof(mac));
+
 	return 0;
 }
 
-- 
2.35.1.1320.gc452695387.dirty