[PATCH v4 2/3] ARM: dts: microchip: at91-sama7g5ek: add EEPROMs

[Andrei Simion]

From: Claudiu Beznea <claudiu.beznea at microchip.com>

Our main boot sequence is
(1) ROM BOOT -> AT91Bootstrap -> U-Boot -> Linux Kernel.
U-Boot is the stage where we set up the MAC address.
Also we can skip U-Boot and use the following boot sequence :
(2) ROM BOOT -> AT91Boostrap -> Linux Kernel.
Add EEPROMs and nvmem-layout to describe eui48 MAC address region
to be used for case (2).

Signed-off-by: Claudiu Beznea <claudiu.beznea at microchip.com>
[andrei.simion at microchip.com: Add nvmem-layout to describe eui48 mac region.
Align compatible name with datasheet. Reword commit message.]
Signed-off-by: Andrei Simion <andrei.simion at microchip.com>
---
v3 -> v4:
- reword commit message
- change commit title

v2 -> v3:
- change from atmel,24mac02e4 to microchip,24aa025e48 to align with datasheet
- drop co-developed-by to maintain the chronological order of the changes

v1 -> v2:
- remove unnecessary #address-cells #size-cells
---
 .../arm/boot/dts/microchip/at91-sama7g5ek.dts | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/arch/arm/boot/dts/microchip/at91-sama7g5ek.dts b/arch/arm/boot/dts/microchip/at91-sama7g5ek.dts
index 20b2497657ae..40f4480e298b 100644
--- a/arch/arm/boot/dts/microchip/at91-sama7g5ek.dts
+++ b/arch/arm/boot/dts/microchip/at91-sama7g5ek.dts
@@ -403,6 +403,42 @@ i2c8: i2c at 600 {
 		i2c-digital-filter;
 		i2c-digital-filter-width-ns = <35>;
 		status = "okay";
+
+		eeprom0: eeprom at 52 {
+			compatible = "microchip,24aa025e48";
+			reg = <0x52>;
+			size = <256>;
+			pagesize = <16>;
+			vcc-supply = <&vdd_3v3>;
+
+			nvmem-layout {
+				compatible = "fixed-layout";
+				#address-cells = <1>;
+				#size-cells = <1>;
+
+				eeprom0_eui48: eui48 at fa {
+					reg = <0xfa 0x6>;
+				};
+			};
+		};
+
+		eeprom1: eeprom at 53 {
+			compatible = "microchip,24aa025e48";
+			reg = <0x53>;
+			size = <256>;
+			pagesize = <16>;
+			vcc-supply = <&vdd_3v3>;
+
+			nvmem-layout {
+				compatible = "fixed-layout";
+				#address-cells = <1>;
+				#size-cells = <1>;
+
+				eeprom1_eui48: eui48 at fa {
+					reg = <0xfa 0x6>;
+				};
+			};
+		};
 	};
 };
 
@@ -440,6 +476,8 @@ &pinctrl_gmac0_mdio_default
 		     &pinctrl_gmac0_txck_default
 		     &pinctrl_gmac0_phy_irq>;
 	phy-mode = "rgmii-id";
+	nvmem-cells = <&eeprom0_eui48>;
+	nvmem-cell-names = "mac-address";
 	status = "okay";
 
 	ethernet-phy at 7 {
@@ -457,6 +495,8 @@ &gmac1 {
 		     &pinctrl_gmac1_mdio_default
 		     &pinctrl_gmac1_phy_irq>;
 	phy-mode = "rmii";
+	nvmem-cells = <&eeprom1_eui48>;
+	nvmem-cell-names = "mac-address";
 	status = "okay"; /* Conflict with pdmc0. */
 
 	ethernet-phy at 0 {
-- 
2.34.1