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From: Choong Yong Liang <yong.liang.choong@linux.intel.com>
To: "Russell King (Oracle)" <linux@armlinux.org.uk>
Cc: Rajneesh Bhardwaj <irenic.rajneesh@gmail.com>,
	David E Box <david.e.box@linux.intel.com>,
	Hans de Goede <hdegoede@redhat.com>,
	Mark Gross <markgross@kernel.org>,
	Alexandre Torgue <alexandre.torgue@foss.st.com>,
	Jose Abreu <Jose.Abreu@synopsys.com>,
	"David S . Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Maxime Coquelin <mcoquelin.stm32@gmail.com>,
	Richard Cochran <richardcochran@gmail.com>,
	Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Jesper Dangaard Brouer <hawk@kernel.org>,
	John Fastabend <john.fastabend@gmail.com>,
	Andrew Lunn <andrew@lunn.ch>,
	Heiner Kallweit <hkallweit1@gmail.com>,
	Philipp Zabel <p.zabel@pengutronix.de>,
	Andrew Halaney <ahalaney@redhat.com>,
	Simon Horman <simon.horman@corigine.com>,
	Serge Semin <fancer.lancer@gmail.com>,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-stm32@st-md-mailman.stormreply.com,
	linux-arm-kernel@lists.infradead.org,
	platform-driver-x86@vger.kernel.org, linux-hwmon@vger.kernel.org,
	bpf@vger.kernel.org, Voon Wei Feng <weifeng.voon@intel.com>,
	Michael Sit Wei Hong <michael.wei.hong.sit@intel.com>,
	Lai Peter Jun Ann <jun.ann.lai@intel.com>,
	Abdul Rahim Faizal <faizal.abdul.rahim@intel.com>
Subject: Re: [PATCH net-next v4 06/11] net: stmmac: resetup XPCS according to the new interface mode
Date: Thu, 1 Feb 2024 13:10:05 +0800	[thread overview]
Message-ID: <9e23671e-788c-4191-bdb4-94915ff7da5a@linux.intel.com> (raw)
In-Reply-To: <ZbjNn+C/VHegH2t7@shell.armlinux.org.uk>



On 30/1/2024 6:21 pm, Russell King (Oracle) wrote:
> NAK. Absolutely not. You haven't read the phylink documentation, nor
> understood how phylink works.
> 
> Since you haven't read the phylink documentation, I'm not going to
> waste any more time reviewing this series since you haven't done your
> side of the bargin here.
> 
Hi Russell,

Sorry that previously I only studied the phylink based on the `phylink.h` 
itself. I think it might not be sufficient. I did search through the 
internet and found the phylink document from kernel.org 
(https://docs.kernel.org/networking/sfp-phylink.html). Kindly let me know 
if there are any other phylink documents I might have overlooked.

According to the phylink document from kernel.org, it does mention that 
"phylink is a mechanism to support hot-pluggable networking modules 
directly connected to a MAC without needing to re-initialise the adapter on 
hot-plug events." I realize I should not destroy and reinitialize the PCS.
Instead, I plan to follow the implementation in "net: macb: use 
.mac_select_pcs() interface" 
(https://lore.kernel.org/netdev/E1n568J-002SZX-Gr@rmk-PC.armlinux.org.uk/T/). 
This involves initializing the required PCS during the MAC probe and 
querying the PCS based on the interface.

Kindly let me know if I've overlooked anything in this proposed solution.

  reply	other threads:[~2024-02-01  5:10 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-01-29 13:02 [PATCH net-next v4 00/11] Enable SGMII and 2500BASEX interface mode switching for Intel platforms Choong Yong Liang
2024-01-29 13:02 ` [PATCH net-next v4 01/11] net: phylink: publish ethtool link modes that supported and advertised Choong Yong Liang
2024-01-30  9:27   ` Russell King (Oracle)
2024-01-29 13:02 ` [PATCH net-next v4 02/11] net: stmmac: provide allow_switch_interface flag Choong Yong Liang
2024-01-29 13:02 ` [PATCH net-next v4 03/11] net: phylink: provide mac_get_pcs_neg_mode() function Choong Yong Liang
2024-01-29 13:02 ` [PATCH net-next v4 04/11] net: phylink: add phylink_pcs_neg_mode() declaration into phylink.h Choong Yong Liang
2024-01-29 13:02 ` [PATCH net-next v4 05/11] net: stmmac: select PCS negotiation mode according to the interface mode Choong Yong Liang
2024-01-29 13:02 ` [PATCH net-next v4 06/11] net: stmmac: resetup XPCS according to the new " Choong Yong Liang
2024-01-30 10:21   ` Russell King (Oracle)
2024-02-01  5:10     ` Choong Yong Liang [this message]
2024-02-01  8:38       ` Russell King (Oracle)
2024-02-02  3:00         ` Choong Yong Liang
2024-02-02  8:50           ` Russell King (Oracle)
2024-02-15  3:14             ` Choong Yong Liang
2024-01-29 13:02 ` [PATCH net-next v4 07/11] arch: x86: Add IPC mailbox accessor function and add SoC register access Choong Yong Liang
2024-01-31 10:54   ` Ilpo Järvinen
2024-02-02  3:04     ` Choong Yong Liang
2024-01-29 13:02 ` [PATCH net-next v4 08/11] stmmac: intel: configure SerDes according to the interface mode Choong Yong Liang
2024-01-30  8:48   ` kernel test robot
2024-01-31 10:58   ` Ilpo Järvinen
2024-02-02  3:06     ` Choong Yong Liang
2024-01-29 13:02 ` [PATCH net-next v4 09/11] net: stmmac: configure SerDes on mac_finish Choong Yong Liang
2024-01-29 13:02 ` [PATCH net-next v4 10/11] stmmac: intel: interface switching support for EHL platform Choong Yong Liang
2024-01-29 13:02 ` [PATCH net-next v4 11/11] stmmac: intel: interface switching support for ADL-N platform Choong Yong Liang

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