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From: Aurelien Jarno <aurelien@aurel32.net>
To: linux-kernel@vger.kernel.org, Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>, Yixun Lan <dlan@kernel.org>,
	Paul Walmsley <pjw@kernel.org>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Alexandre Ghiti <alex@ghiti.fr>
Cc: Aurelien Jarno <aurelien@aurel32.net>,
	devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND
	FLATTENED DEVICE TREE BINDINGS),
	linux-riscv@lists.infradead.org (open list:RISC-V ARCHITECTURE),
	spacemit@lists.linux.dev (open list:RISC-V SPACEMIT SoC Support)
Subject: [PATCH 3/5] riscv: dts: spacemit: add 24c02 eeprom on K3 Pico-ITX board
Date: Sat, 20 Jun 2026 08:22:04 +0200	[thread overview]
Message-ID: <20260620062238.3199108-4-aurelien@aurel32.net> (raw)
In-Reply-To: <20260620062238.3199108-1-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>
---
 arch/riscv/boot/dts/spacemit/k3-pico-itx.dts | 30 ++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts b/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
index 5fe9041ec5702..0a0c221c99e74 100644
--- a/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
+++ b/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
@@ -47,6 +47,36 @@ &i2c2 {
 	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


WARNING: multiple messages have this Message-ID (diff)
From: Aurelien Jarno <aurelien@aurel32.net>
To: linux-kernel@vger.kernel.org, Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>, Yixun Lan <dlan@kernel.org>,
	Paul Walmsley <pjw@kernel.org>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Alexandre Ghiti <alex@ghiti.fr>
Cc: Aurelien Jarno <aurelien@aurel32.net>,
	devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND
	FLATTENED DEVICE TREE BINDINGS),
	linux-riscv@lists.infradead.org (open list:RISC-V ARCHITECTURE),
	spacemit@lists.linux.dev (open list:RISC-V SPACEMIT SoC Support)
Subject: [PATCH 3/5] riscv: dts: spacemit: add 24c02 eeprom on K3 Pico-ITX board
Date: Sat, 20 Jun 2026 08:22:04 +0200	[thread overview]
Message-ID: <20260620062238.3199108-4-aurelien@aurel32.net> (raw)
In-Reply-To: <20260620062238.3199108-1-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>
---
 arch/riscv/boot/dts/spacemit/k3-pico-itx.dts | 30 ++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts b/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
index 5fe9041ec5702..0a0c221c99e74 100644
--- a/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
+++ b/arch/riscv/boot/dts/spacemit/k3-pico-itx.dts
@@ -47,6 +47,36 @@ &i2c2 {
 	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


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

  parent reply	other threads:[~2026-06-20  6:50 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-20  6:22 [PATCH 0/5] riscv: dts: spacemit: serial/i2c/ethernet improvements for the K3 Pico-ITX board Aurelien Jarno
2026-06-20  6:22 ` Aurelien Jarno
2026-06-20  6:22 ` [PATCH 1/5] riscv: dts: spacemit: set console baud rate on " Aurelien Jarno
2026-06-20  6:22   ` Aurelien Jarno
2026-06-20  9:03   ` Guodong Xu
2026-06-20  9:03     ` Guodong Xu
2026-06-20  6:22 ` [PATCH 2/5] riscv: dts: spacemit: enable the i2c2 adapter " Aurelien Jarno
2026-06-20  6:22   ` Aurelien Jarno
2026-06-20  6:29   ` sashiko-bot
2026-06-21 13:14     ` Aurelien Jarno
2026-06-21 13:14       ` Aurelien Jarno
2026-06-20  6:22 ` Aurelien Jarno [this message]
2026-06-20  6:22   ` [PATCH 3/5] riscv: dts: spacemit: add 24c02 eeprom " Aurelien Jarno
2026-06-20  6:22 ` [PATCH 4/5] riscv: dts: spacemit: add i2c aliases " Aurelien Jarno
2026-06-20  6:22   ` Aurelien Jarno
2026-06-20  6:22 ` [PATCH 5/5] riscv: dts: spacemit: improve RTL8211F PHY configuration " Aurelien Jarno
2026-06-20  6:22   ` Aurelien Jarno

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