netdev - Re: [PATCH V2 net-next] net: stmmac: dwmac-loongson: Set clk_csr

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Message-ID: <d4329f05-b9c1-46ef-b2fe-a078f9618892@redhat.com>
Date: Thu, 5 Feb 2026 15:39:28 +0100
From: Paolo Abeni <pabeni@...hat.com>
To: Huacai Chen <chenhuacai@...ngson.cn>, Huacai Chen
 <chenhuacai@...nel.org>, Andrew Lunn <andrew+netdev@...n.ch>,
 "David S . Miller" <davem@...emloft.net>, Eric Dumazet
 <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>
Cc: Yanteng Si <si.yanteng@...ux.dev>,
 Alexandre Torgue <alexandre.torgue@...s.st.com>,
 Jose Abreu <joabreu@...opsys.com>, Serge Semin <fancer.lancer@...il.com>,
 loongarch@...ts.linux.dev, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org, stable@...r.kernel.org,
 Hongliang Wang <wanghongliang@...ngson.cn>
Subject: Re: [PATCH V2 net-next] net: stmmac: dwmac-loongson: Set clk_csr_i to
 100-150MHz

On 2/3/26 7:29 AM, Huacai Chen wrote:
> 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@...r.kernel.org
> Fixes: 30bba69d7db40e7 ("stmmac: pci: Add dwmac support for Loongson")
> Signed-off-by: Hongliang Wang <wanghongliang@...ngson.cn>
> Signed-off-by: Huacai Chen <chenhuacai@...ngson.cn>

This should go via the 'net' tree right?

/P