From nobody Mon Feb 9 03:00:08 2026 Received: from cstnet.cn (smtp81.cstnet.cn [159.226.251.81]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E4E1628DB46; Fri, 2 Jan 2026 15:53:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.226.251.81 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767369187; cv=none; b=Y10QmO2pcTxK9x0oz2B4EGdCRfikAQPoCtXlgusq1YimkWTqCoq0R9wdKOrUKs0ntN0qlYXLES+3qAR2d/6fjyOwM3qGnTbmGeGYwmd8KWO4JgB5fmYIiCKycirNI2Z+wqneEwUBUscpvfBBepBHytfZLNNm4tCr0mEgXQrQzOE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767369187; c=relaxed/simple; bh=6xwXaESbQDcoH6UquNWlaguH/ghPy1QEXupzkKp1O0w=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Gu25X7jS/rl/96Y3KYIclVeJTUVZbrQOPP6jDxS98IPGuLx5kGqZqsi3DMWF3Zq89ZewvgDqJrgoJoPmfk9jY7R8SkMei7vD8Dr2IAKlv9fKwZO+Fgq0wNiBxwX0BOFC3v/R7LhnlG9jDOvv91V5k/H3UIdbY60hHWrYPloLnec= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn; spf=pass smtp.mailfrom=iscas.ac.cn; arc=none smtp.client-ip=159.226.251.81 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=iscas.ac.cn Received: from edelgard.fodlan.icenowy.me (unknown [112.94.103.158]) by APP-03 (Coremail) with SMTP id rQCowABnaL_N6VdpJWUQAw--.54339S2; Fri, 02 Jan 2026 23:52:47 +0800 (CST) From: Icenowy Zheng To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Thomas Bogendoerfer , Huacai Chen , Jiaxun Yang Cc: devicetree@vger.kernel.org, linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Icenowy Zheng Subject: [PATCH] MIPS: Loongson64: dts: fix phy-related definition of LS7A GMAC Date: Fri, 2 Jan 2026 23:52:43 +0800 Message-ID: <20260102155243.3639731-1-zhengxingda@iscas.ac.cn> X-Mailer: git-send-email 2.52.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: rQCowABnaL_N6VdpJWUQAw--.54339S2 X-Coremail-Antispam: 1UD129KBjvJXoW7WF4DCr4DJw1fKF1ftr18Zrb_yoW8Wr4Dpa y3Cws7Xrn8ur1avay8CFyUXr4fAa98KFs5uF47C3y5Jw10vF10vr17JFyrtr1UGrWFqa40 qw109ayxX3Z7Cw7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUvE14x267AKxVW8JVW5JwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK02 1l84ACjcxK6xIIjxv20xvE14v26r1I6r4UM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26r4j 6F4UM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s 0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xII jxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr0_Gr 1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7M4IIrI8v6xkF7I0E8cxa n2IY04v7MxkF7I0En4kS14v26r1q6r43MxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4 AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE 17CEb7AF67AKxVWUtVW8ZwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMI IF0xvE2Ix0cI8IcVCY1x0267AKxVWUJVW8JwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4l IxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVWUJVW8JbIYCTnIWI evJa73UjIFyTuYvjfUonmRUUUUU X-CM-SenderInfo: x2kh0wp0lqwv3d6l2u1dvotugofq/ Content-Type: text/plain; charset="utf-8" Currently the LS7A GMAC device tree node lacks a proper phy-handle property pointing to the PHY node. In addition, the phy-mode property specifies "rgmii" without any internal delay information, which means the board trace needs to add 2ns delay to the RGMII data lines; but that isn't known to happen on any Loongson board. The ACPI-based initialization codepath, which is used on LoongArch-based 3A5000 + 7A1000 hardwares, specifies "rgmii-id" phy mode, which should be the one we are using. Add the lacking phy-handle property and set proper phy-mode. Tested on a LS3A4000_7A1000_NUC_BOARD_V2.1 board with YT8521S PHY. Signed-off-by: Icenowy Zheng Reviewed-by: Jiaxun Yang --- arch/mips/boot/dts/loongson/ls7a-pch.dtsi | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/mips/boot/dts/loongson/ls7a-pch.dtsi b/arch/mips/boot/dts= /loongson/ls7a-pch.dtsi index ee71045883e7e..6dee85909f5a6 100644 --- a/arch/mips/boot/dts/loongson/ls7a-pch.dtsi +++ b/arch/mips/boot/dts/loongson/ls7a-pch.dtsi @@ -199,7 +199,8 @@ gmac@3,0 { <13 IRQ_TYPE_LEVEL_HIGH>; interrupt-names =3D "macirq", "eth_lpi"; interrupt-parent =3D <&pic>; - phy-mode =3D "rgmii"; + phy-mode =3D "rgmii-id"; + phy-handle =3D <&phy0>; mdio { #address-cells =3D <1>; #size-cells =3D <0>; @@ -222,7 +223,8 @@ gmac@3,1 { <15 IRQ_TYPE_LEVEL_HIGH>; interrupt-names =3D "macirq", "eth_lpi"; interrupt-parent =3D <&pic>; - phy-mode =3D "rgmii"; + phy-mode =3D "rgmii-id"; + phy-handle =3D <&phy1>; mdio { #address-cells =3D <1>; #size-cells =3D <0>; --=20 2.52.0