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From: Troy Mitchell <troy.mitchell@linux.spacemit.com>
To: Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	 Conor Dooley <conor+dt@kernel.org>, Yixun Lan <dlan@kernel.org>,
	 Troy Mitchell <troy.mitchell@linux.spacemit.com>,
	 Paul Walmsley <pjw@kernel.org>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	 Albert Ou <aou@eecs.berkeley.edu>,
	Alexandre Ghiti <alex@ghiti.fr>
Cc: devicetree@vger.kernel.org, linux-riscv@lists.infradead.org,
	 spacemit@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: [PATCH 5/5] riscv: dts: spacemit: k3-com260: Set Ethernet MAC from EEPROM
Date: Thu, 05 Nov 2026 08:23:50 +0000	[thread overview]
Message-ID: <20261105-k3-com260-module-sd-nor-mac-v1-5-138b39d74602@linux.spacemit.com> (raw)
In-Reply-To: <20261105-k3-com260-module-sd-nor-mac-v1-0-138b39d74602@linux.spacemit.com>

The EEPROM on the K3 CoM260 module stores the board MAC address in its
ONIE TLV data. Assign it to the module's Ethernet controller, so that
every carrier board using the module gets a stable MAC address instead
of a random one.

Signed-off-by: Troy Mitchell <troy.mitchell@linux.spacemit.com>
---
 arch/riscv/boot/dts/spacemit/k3-com260.dtsi | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/riscv/boot/dts/spacemit/k3-com260.dtsi b/arch/riscv/boot/dts/spacemit/k3-com260.dtsi
index f94607cb2eeb..1f5c958c9d6d 100644
--- a/arch/riscv/boot/dts/spacemit/k3-com260.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k3-com260.dtsi
@@ -42,7 +42,7 @@ eeprom@50 {
 		nvmem-layout {
 			compatible = "onie,tlv-layout";
 
-			mac-address {
+			mac_address: mac-address {
 				#nvmem-cell-cells = <1>;
 			};
 
@@ -216,6 +216,8 @@ dldo7: dldo7 {
 };
 
 &eth1 {
+	nvmem-cells = <&mac_address 0>;
+	nvmem-cell-names = "mac-address";
 	pinctrl-names = "default";
 	pinctrl-0 = <&gmac1_rgmii_0_cfg>, <&gmac1_phy_0_cfg>;
 	phy-mode = "rgmii-id";

-- 
2.56.0


      parent reply	other threads:[~2026-11-05  8:24 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-11-05  8:23 [PATCH 0/5] riscv: dts: spacemit: k3-com260: Describe SD card, SPI NOR and MAC Troy Mitchell
2026-11-05  8:23 ` [PATCH 1/5] riscv: dts: spacemit: k3-com260-ifx: Drop wrong SD card vmmc-supply Troy Mitchell
2026-11-05  8:23 ` [PATCH 2/5] riscv: dts: spacemit: k3-com260: Move SD card to the module Troy Mitchell
2026-11-05  8:23 ` [PATCH 3/5] riscv: dts: spacemit: k3-com260: Add SPI NOR flash Troy Mitchell
2026-11-05  8:23 ` [PATCH 4/5] riscv: defconfig: Enable AT24 EEPROM and ONIE TLV layout Troy Mitchell
2026-11-05 10:42   ` E Shattow
2026-11-05 14:20     ` Troy Mitchell
2026-11-05  8:23 ` Troy Mitchell [this message]

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