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 490EA2C21F2; Sun, 1 Mar 2026 01:53:50 +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=1772330030; cv=none; b=doylR8jUOjKuMe/goi0sGS1Qj8P/4+TumBO4fRg6i8eZZpO0qzbpsv61XgPvoCB0CjmIOCGgtinK09btUUXwTN7Ykku894UQ5rhsc6HmGsSVj9xIG/8tQdvx3BrROLtc2ZShmme25WUXnOfpF5oWAY+EVEHfovO0ndB1YlLb2hc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772330030; c=relaxed/simple; bh=tU83mg14wxZWjnXUfKEv83yCfZxM4LKLY9c1OLpO47s=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=NJ2DX3sLDPvrI6ntuo05zp62s9iKApcrkahQ33vamsLLme+YXeqXRJYOB7pahlRf42OuvzDoBdc2MafRZaAPMnBqFCWz+GUPdg6gWDSZEV4ah3JoBfxIHTisUJk1ir36LBS0AUudA6W/p8TTRFhJB2s2itAzwJzE8qwHCTlATuY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=AuZHyJ/O; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="AuZHyJ/O" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5075AC19421; Sun, 1 Mar 2026 01:53:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772330030; bh=tU83mg14wxZWjnXUfKEv83yCfZxM4LKLY9c1OLpO47s=; h=From:To:Cc:Subject:Date:From; b=AuZHyJ/O0ZH83wVGBBRSQC/rcyKAOvUJ6aTj/uS2UUiUA1zuB+ZwE+d+EfNNMuOtb 1/meZ14tea/eUGpS/il8UTrDSrmLt56MXZ4nmfamksX3Kflo18vIN7+bl5R+PG7gB0 I3uj5IKsVHNjbTrrzZxcTaTQIbGFwPsOPvwTpdUd7V/TFFJjxVo3UP7zURvwZZpcO7 ZDHDxN/g2eleDcJMv2Q9VerPPh88ulfcgnx8t0kYFnTjYQukCS5mnBnRL4j3OLZNPs WhPS/3CPsa5kv2+9bLhyfM6NTe/q72rWKP4C0sdWlPN7IBhvSRLulaz6dcocIRxuUo eAqIL4j3ItS4Q== From: Sasha Levin To: stable@vger.kernel.org, chenhuacai@kernel.org Cc: Hongliang Wang , Huacai Chen , Jakub Kicinski , netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Subject: FAILED: Patch "net: stmmac: dwmac-loongson: Set clk_csr_i to 100-150MHz" failed to apply to 5.15-stable tree Date: Sat, 28 Feb 2026 20:53:47 -0500 Message-ID: <20260301015348.1720657-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Hint: ignore X-stable: review Content-Transfer-Encoding: 8bit The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . Thanks, Sasha ------------------ original commit in Linus's tree ------------------ >From e1aa5ef892fb4fa9014a25e87b64b97347919d37 Mon Sep 17 00:00:00 2001 From: Huacai Chen Date: Tue, 3 Feb 2026 14:29:01 +0800 Subject: [PATCH] net: stmmac: dwmac-loongson: Set clk_csr_i to 100-150MHz 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 --- 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 107a7c84ace80..c05e3e7a539cf 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 = pci_dev_id(pdev); - /* clk_csr_i = 20-35MHz & MDC = clk_csr_i/16 */ - plat->clk_csr = STMMAC_CSR_20_35M; + /* clk_csr_i = 100-150MHz & MDC = clk_csr_i/62 */ + plat->clk_csr = STMMAC_CSR_100_150M; plat->core_type = DWMAC_CORE_GMAC; plat->force_sf_dma_mode = 1; -- 2.51.0