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Message-ID: <Y8Vt9vfEa4w8HXHQ@shell.armlinux.org.uk>
Date: Mon, 16 Jan 2023 15:32:06 +0000
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: Bjørn Mork <bjorn@...k.no>
Cc: Frank Wunderlich <frank-w@...lic-files.de>,
Frank Wunderlich <linux@...web.de>,
linux-mediatek@...ts.infradead.org,
Alexander Couzens <lynxis@...0.eu>,
Felix Fietkau <nbd@....name>, John Crispin <john@...ozen.org>,
Sean Wang <sean.wang@...iatek.com>,
Mark Lee <Mark-MC.Lee@...iatek.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Matthias Brugger <matthias.bgg@...il.com>,
netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] net: mtk_sgmii: implement mtk_pcs_ops
On Mon, Jan 16, 2023 at 04:21:30PM +0100, Bjørn Mork wrote:
> [ 54.539438] mtk_soc_eth 15100000.ethernet wan: Link is Down
> [ 56.619937] mtk_sgmii_select_pcs: id=1
> [ 56.623690] mtk_pcs_config: interface=4
> [ 56.627511] offset:0 0x140
> [ 56.627513] offset:4 0x4d544950
> [ 56.630215] offset:8 0x20
> [ 56.633340] forcing AN
> [ 56.638292] mtk_pcs_config: rgc3=0x0, advertise=0x1 (changed), link_timer=1600000, sgm_mode=0x103, bmcr=0x1000, use_an=1
> [ 56.649226] mtk_pcs_link_up: interface=4
> [ 56.653135] offset:0 0x81140
> [ 56.653137] offset:4 0x4d544950
> [ 56.656001] offset:8 0x1
> [ 56.659137] mtk_soc_eth 15100000.ethernet wan: Link is Up - 1Gbps/Full - flow control rx/tx
Thanks - there seems to be something weird with the bmcr value printed
above in the mtk_pcs_config line.
You have bmcr=0x1000, but the code sets two bits - SGMII_AN_RESTART and
SGMII_AN_ENABLE which are bits 9 and 12, so bmcr should be 0x1200, not
0x1000. Any ideas why?
Can you also hint at what the bits in the PHY register you quote mean
please?
Thanks.
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
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