[PATCH 2/4] riscv: dts: spacemit: add 24c02 eeprom on K3 Pico-ITX board

[E Shattow <e@freeshell.de>]

From: Aurelien Jarno <aurelien@aurel32.net>

The K3 Pico-ITX board includes a 24c02 eeprom, that stores the product
name, the part name, the MAC address of the network interfaces and the
board's serial number. These values are also exposed via an
onie,tlv-layout nvmem layout.

The eeprom is marked as read-only since its contents are not supposed to
be modified.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Yixun Lan <dlan@kernel.org>
Link: https://patch.msgid.link/20260623204431.498700-4-aurelien@aurel32.net
Signed-off-by: Yixun Lan <dlan@kernel.org>

[ upstream commit: 930491838c55c41317da9f263e3e9b013cb9aaa8 ]

(cherry picked from commit 3146b373c9699a456fa58b56a23d1127096cbc86)
---
 .../src/riscv/spacemit/k3-pico-itx.dts        | 30 +++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/dts/upstream/src/riscv/spacemit/k3-pico-itx.dts b/dts/upstream/src/riscv/spacemit/k3-pico-itx.dts
index dde6028a5ef3..143bf6f41260 100644
--- a/dts/upstream/src/riscv/spacemit/k3-pico-itx.dts
+++ b/dts/upstream/src/riscv/spacemit/k3-pico-itx.dts
@@ -47,6 +47,36 @@
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c2_1_cfg>;
 	status = "okay";
+
+	eeprom@50 {
+		compatible = "atmel,24c02";
+		reg = <0x50>;
+		pagesize = <8>;
+		read-only;
+		size = <256>;
+		status = "okay";
+
+		nvmem-layout {
+			compatible = "onie,tlv-layout";
+
+			mac-address {
+				#nvmem-cell-cells = <1>;
+			};
+
+			num-macs {
+			};
+
+			part-number {
+			};
+
+			product-name {
+			};
+
+			serial-number {
+			};
+
+		};
+	};
 };
 
 &i2c8 {
-- 
2.53.0