From nobody Sun Feb 8 23:32:47 2026 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 4F67526C3AE; Sun, 1 Feb 2026 02:37:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.242.206.163 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769913440; cv=none; b=tt1X5OSU/lx+2Wbi86BGsvNijRRPrX4dUbQuLD5phBIqH3YxeDxrdO0RGd1tJST+PXWIcN6W17JBIr0HkwG9DG3MX89tINx3rlpaxRZjKi3UhAlhtkuhM90NcEJQmTiiB+XKIOjbRAbnKU25q09hgwWh4JGVqrdQV5z9NRIiEW0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769913440; c=relaxed/simple; bh=dfwtDsNZTVl508HHg0yruQEJKMr8pmWepXHXdV2sVEU=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=DIIqaQRursdQnt98TGmdILqK33dKV/1kdG32OP7e0CJlvoU6pJg3M4M/mD+2IINuqmSnNbjEVhSFyFMzKg38YC2DdmiWy/ERbGxEj185RRyCr0WYaOlvfogW5t7l+C+ukdJo7xWCd1sZMpsAwCfzwvHvxQjuBV9Zm0chIKlLAf4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn; spf=pass smtp.mailfrom=loongson.cn; arc=none smtp.client-ip=114.242.206.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=loongson.cn Received: from loongson.cn (unknown [223.64.69.42]) by gateway (Coremail) with SMTP id _____8DxPMNcvH5p+6kOAA--.47756S3; Sun, 01 Feb 2026 10:37:16 +0800 (CST) Received: from localhost.localdomain (unknown [223.64.69.42]) by front1 (Coremail) with SMTP id qMiowJCxecFVvH5pCI48AA--.22277S2; Sun, 01 Feb 2026 10:37:13 +0800 (CST) From: Huacai Chen To: Huacai Chen , Andrew Lunn , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Yanteng Si , Alexandre Torgue , Jose Abreu , Serge Semin , loongarch@lists.linux.dev, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Huacai Chen , stable@vger.kernel.org, Hongliang Wang Subject: [PATCH net-next] net: stmmac: dwmac-loongson: Set clk_csr_i to 100-150MHz Date: Sun, 1 Feb 2026 10:37:00 +0800 Message-ID: <20260201023700.366531-1-chenhuacai@loongson.cn> X-Mailer: git-send-email 2.47.3 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: qMiowJCxecFVvH5pCI48AA--.22277S2 X-CM-SenderInfo: hfkh0x5xdftxo6or00hjvr0hdfq/ X-Coremail-Antispam: 1Uk129KBj93XoW7CrWDtF13CrWrKFW7ArW3twc_yoW8Gr1fpr Z7Aa47W3yayr17K3Z5Xw1UZFy5ua90gFZ7WFsrJws3WFs2y34jqry5tFZ8uFW7uFWrCF1a vF1qkr43CF1DCwbCm3ZEXasCq-sJn29KB7ZKAUJUUUUk529EdanIXcx71UUUUU7KY7ZEXa sCq-sGcSsGvfJ3Ic02F40EFcxC0VAKzVAqx4xG6I80ebIjqfuFe4nvWSU5nxnvy29KBjDU 0xBIdaVrnRJUUUBYb4IE77IF4wAFF20E14v26r1j6r4UM7CY07I20VC2zVCF04k26cxKx2 IYs7xG6rWj6s0DM7CIcVAFz4kK6r1Y6r17M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48v e4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_Xr0_Ar1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI 0_Gr0_Cr1l84ACjcxK6I8E87Iv67AKxVW8JVWxJwA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_ Gr0_Gr1UM2kKe7AKxVWUtVW8ZwAS0I0E0xvYzxvE52x082IY62kv0487Mc804VCY07AIYI kI8VC2zVCFFI0UMc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUtVWr XwAv7VC2z280aVAFwI0_Gr0_Cr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI4 8JMxkF7I0En4kS14v26r1q6r43MxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j 6r4UMxCIbckI1I0E14v26r1q6r43MI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwV AFwI0_JrI_JrWlx4CE17CEb7AF67AKxVW8ZVWrXwCIc40Y0x0EwIxGrwCI42IY6xIIjxv2 0xvE14v26ryj6F1UMIIF0xvE2Ix0cI8IcVCY1x0267AKxVW8JVWxJwCI42IY6xAIw20EY4 v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Gr0_Cr1lIxAIcVC2z280aVCY1x0267AK xVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa7IU0L0ePUUUUU== Content-Type: text/plain; charset="utf-8" Current clk_csr_i setting of Loongson STMMAC (including LS7A1000/2000 and LS2K1000/2000/3000) are copy & paste from other drivers. In fact, Loongson STMMAC use 125MHz clocks and need 62 freq division to within 2.5MHz, meeting most PHY MDC requirement. So fix by setting clk_csr_i to 100-150MHz. Cc: stable@vger.kernel.org Signed-off-by: Hongliang Wang Signed-off-by: Huacai Chen --- drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c b/drivers= /net/ethernet/stmicro/stmmac/dwmac-loongson.c index 107a7c84ace8..c05e3e7a539c 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c @@ -91,8 +91,8 @@ static void loongson_default_data(struct pci_dev *pdev, /* Get bus_id, this can be overwritten later */ plat->bus_id =3D pci_dev_id(pdev); =20 - /* clk_csr_i =3D 20-35MHz & MDC =3D clk_csr_i/16 */ - plat->clk_csr =3D STMMAC_CSR_20_35M; + /* clk_csr_i =3D 100-150MHz & MDC =3D clk_csr_i/62 */ + plat->clk_csr =3D STMMAC_CSR_100_150M; plat->core_type =3D DWMAC_CORE_GMAC; plat->force_sf_dma_mode =3D 1; =20 --=20 2.47.3