From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A6FF02ECE9B; Thu, 12 Mar 2026 20:22:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773346943; cv=none; b=aeHFY7A34NU/tra+zBM0aqU5lc64+JbEMl1LMM9cKG6MKRk1KCGG0Ne1xLM6cxBV+DNO404GRQOw9LFUdrhZl735cqAraozSpJC5NZOxsrVrfiGvU7MHeQcLacd+ev+trn21Ea9uMAC36Cy88JOQu1EM3b84Jv5lnncA2jyvwf4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773346943; c=relaxed/simple; bh=gifU353o9J35v/g1Q4nXFtEwKKx027Bx+obysLiul0k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=VypqhSmdALzh1q+667jQcZvB5o2OvJC9LPvOFnH3y1BNGqmqTih03C3VmTCZkaZiSwOlAMATb+aV4S5ehWvRLHJQguPeOZnj/0nBYZJseUR9THG21vrenRulLg8XPgcuGGdtfO8Y53Y4anhwhWV3tkgvApvKBb03eIWaCdve0Ic= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=M45kXNda; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="M45kXNda" Received: by smtp.kernel.org (Postfix) with ESMTPSA id ED702C4CEF7; Thu, 12 Mar 2026 20:22:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1773346943; bh=gifU353o9J35v/g1Q4nXFtEwKKx027Bx+obysLiul0k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=M45kXNda9CRokvzKCKoZ4LNAg7kjHjGDzCScFoPwnuS8k9d+osC2Z5mAbnH4uXdkQ iq1fBhxpMhzI7C2dxepzN2Ozi99x3W15VSGgAWk2A5hY4Go8o0ndvz9QlstRXvn2ak nQX8CUn0o00lKgL84rGJQ5+7syvsJDZObc76nA1c= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Hongliang Wang , Huacai Chen , Jakub Kicinski Subject: [PATCH 6.12 165/265] net: stmmac: dwmac-loongson: Set clk_csr_i to 100-150MHz Date: Thu, 12 Mar 2026 21:09:12 +0100 Message-ID: <20260312201024.236580943@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260312201018.128816016@linuxfoundation.org> References: <20260312201018.128816016@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Huacai Chen commit e1aa5ef892fb4fa9014a25e87b64b97347919d37 upstream. 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, otherwise some PHYs may link fail. Cc: stable@vger.kernel.org Fixes: 30bba69d7db40e7 ("stmmac: pci: Add dwmac support for Loongson") Signed-off-by: Hongliang Wang Signed-off-by: Huacai Chen Link: https://patch.msgid.link/20260203062901.2158236-1-chenhuacai@loongson.cn Signed-off-by: Jakub Kicinski Signed-off-by: Huacai Chen Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c @@ -86,7 +86,7 @@ static void loongson_default_data(struct /* Get bus_id, this can be overwritten later */ plat->bus_id = pci_dev_id(pdev); - plat->clk_csr = 2; /* clk_csr_i = 20-35MHz & MDC = clk_csr_i/16 */ + plat->clk_csr = 1; /* clk_csr_i = 100-150MHz & MDC = clk_csr_i/62 */ plat->has_gmac = 1; plat->force_sf_dma_mode = 1;