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From: <Ryan.Wanner@microchip.com>
To: <andrew+netdev@lunn.ch>, <davem@davemloft.net>, <edumazet@google.com>,
<kuba@kernel.org>, <pabeni@redhat.com>, <robh@kernel.org>,
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<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>, Ryan Wanner
<Ryan.Wanner@microchip.com>
Subject: [PATCH 6/6] ARM: dts: microchip: sama7d65_curiosity: add EEPROM
Date: Tue, 1 Apr 2025 09:13:22 -0700
Message-ID:
<96ee6832d9b55acfae8d3560f625798025dfd89c.1743523114.git.Ryan.Wanner@microchip.com>
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From: Ryan Wanner <Ryan.Wanner@microchip.com>
If the MAC address is not fetched and loaded by U-boot then Linux will
have to load the address. The EEPROM and nvmem-layout to describe
EUI48 MAC address regions.
Signed-off-by: Ryan Wanner <Ryan.Wanner@microchip.com>
---
.../dts/microchip/at91-sama7d65_curiosity.dts | 21 +++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts b/arch=
/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
index 81abc387112d..779412f04a11 100644
--- a/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
+++ b/arch/arm/boot/dts/microchip/at91-sama7d65_curiosity.dts
@@ -234,6 +234,24 @@ regulator-state-mem {
};
};
};
+
+ eeprom0: eeprom@51 {
+ compatible =3D "microchip,24aa025e48";
+ reg =3D <0x51>;
+ size =3D <256>;
+ pagesize =3D <16>;
+ vcc-supply =3D <&vdd_3v3>;
+
+ nvmem-layout {
+ compatible =3D "fixed-layout";
+ #address-cells =3D <1>;
+ #size-cells =3D <1>;
+
+ eeprom0_eui48: eui48@fa {
+ reg =3D <0xfa 0x6>;
+ };
+ };
+ };
};
=20
&main_xtal {
@@ -251,6 +269,9 @@ &pinctrl_gmac0_txck_default
phy-mode =3D "rgmii-id";
status =3D "okay";
=20
+ nvmem-cells =3D <&eeprom0_eui48>;
+ nvmem-cell-names =3D "mac-address";
+
ethernet-phy@7 {
reg =3D <0x7>;
interrupt-parent =3D <&pioa>;
--=20
2.43.0