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Mon, 27 Jul 2026 13:28:19 -0700 (PDT) Received: from ryzen.lan ([2601:644:8000:7a86::e34]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-314bc3e1290sm35391534eec.1.2026.07.27.13.28.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Jul 2026 13:28:18 -0700 (PDT) From: Rosen Penev To: devicetree@vger.kernel.org Cc: Florian Fainelli , Hauke Mehrtens , =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= , Broadcom internal kernel review list , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-arm-kernel@lists.infradead.org (moderated list:BROADCOM BCM5301X ARM ARCHITECTURE), linux-kernel@vger.kernel.org (open list) Subject: [PATCH] ARM: dts: BCM5301X: SR400AC: set WAN MAC from nvram Date: Mon, 27 Jul 2026 13:28:17 -0700 Message-ID: <20260727202817.22085-1-rosenp@gmail.com> X-Mailer: git-send-email 2.55.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The WAN MAC is offset by 1. Set in dts to avoid having to handle this in userspace. nvram size found from a random bootlog online. Signed-off-by: Rosen Penev --- .../dts/broadcom/bcm4708-smartrg-sr400ac.dts | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/arch/arm/boot/dts/broadcom/bcm4708-smartrg-sr400ac.dts b/arch/arm/boot/dts/broadcom/bcm4708-smartrg-sr400ac.dts index b226bef3369c..03f4a6d37a67 100644 --- a/arch/arm/boot/dts/broadcom/bcm4708-smartrg-sr400ac.dts +++ b/arch/arm/boot/dts/broadcom/bcm4708-smartrg-sr400ac.dts @@ -25,6 +25,16 @@ memory@0 { <0x88000000 0x08000000>; }; + nvram@1eff0000 { + compatible = "brcm,nvram"; + reg = <0x1eff0000 0x10000>; + + et0macaddr: et0macaddr { + #nvmem-cell-cells = <1>; + }; + }; + + leds { compatible = "gpio-leds"; @@ -118,6 +128,11 @@ &spi_nor { status = "okay"; }; +&gmac0 { + nvmem-cells = <&et0macaddr 0>; + nvmem-cell-names = "mac-address"; +}; + &srab { status = "okay"; @@ -140,6 +155,9 @@ port@3 { port@4 { label = "wan"; + + nvmem-cells = <&et0macaddr 1>; + nvmem-cell-names = "mac-address"; }; port@5 { -- 2.55.0