From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: Serge Semin <fancer.lancer@gmail.com>
Cc: Yanteng Si <siyanteng@loongson.cn>,
andrew@lunn.ch, hkallweit1@gmail.com, peppe.cavallaro@st.com,
alexandre.torgue@foss.st.com, joabreu@synopsys.com,
Jose.Abreu@synopsys.com, chenhuacai@kernel.org,
guyinggang@loongson.cn, netdev@vger.kernel.org,
chris.chenfeiyang@gmail.com, siyanteng01@gmail.com
Subject: Re: [PATCH net-next v12 09/15] net: stmmac: dwmac-loongson: Add phy_interface for Loongson GMAC
Date: Tue, 7 May 2024 09:22:18 +0100 [thread overview]
Message-ID: <ZjnkuhmefxaySh1Z@shell.armlinux.org.uk> (raw)
In-Reply-To: <eycodyo57suhzb4jgxjn5fmltzxogo6nszgnkvgak6lqarsw72@lz47ughdxy5r>
On Sat, May 04, 2024 at 12:01:42AM +0300, Serge Semin wrote:
> Absolutely correct. Moreover AFAICS from the databooks the PCS module
> is only available for the DW GMACs with the TBI, RTBI and SGMII
> interfaces. So the STMMAC_PCS_RGMII PCS flag seems misleading. The only
> info about the link state that could be runtime detected on the MAC
> side is: link speed, duplex mode and link status. It's done by means
> of the RGMII in-band status signals. That's what is implemented in the
> dwmac1000_rgsmii() method.
... which you've now made me look at, look at the whole
pcs_link/pcs_speed/pcs_duplex and made me wonder why the hell stmmac
is making this so figgin difficult, messing with the carrier behind
phylink's back (which is a no-no), and why it needs to have separate
paths for this.
It doesn't.
Just because it doesn't have something called an official "PCS" does
not mean you _can't_ use a phylink_pcs to represent something that
has PCS-like properties - such as the RGMII in-band status which is
no different to what Cisco SGMII does.
This isn't something new... this is something that mvneta has
supported since before phylink was a thing, and so phylink had to
allow it as well.
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!
next prev parent reply other threads:[~2024-05-07 8:22 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-25 13:01 [PATCH net-next v12 00/15] stmmac: Add Loongson platform support Yanteng Si
2024-04-25 13:01 ` [PATCH net-next v12 01/15] net: stmmac: Move the atds flag to the stmmac_dma_cfg structure Yanteng Si
2024-05-02 19:10 ` Serge Semin
2024-05-09 12:44 ` Yanteng Si
2024-04-25 13:01 ` [PATCH net-next v12 02/15] net: stmmac: Add multi-channel support Yanteng Si
2024-05-02 22:02 ` Serge Semin
2024-05-10 10:13 ` Yanteng Si
2024-05-13 9:45 ` Serge Semin
2024-05-13 9:49 ` Yanteng Si
2024-04-25 13:01 ` [PATCH net-next v12 03/15] net: stmmac: Export dwmac1000_dma_ops Yanteng Si
2024-05-03 10:27 ` Serge Semin
2024-05-13 9:46 ` Yanteng Si
2024-04-25 13:04 ` [PATCH net-next v12 04/15] net: stmmac: dwmac-loongson: Drop useless platform data Yanteng Si
2024-05-03 10:55 ` Serge Semin
2024-05-03 14:47 ` Serge Semin
2024-05-13 9:47 ` Yanteng Si
2024-05-13 9:46 ` Yanteng Si
2024-04-25 13:04 ` [PATCH net-next v12 05/15] net: stmmac: dwmac-loongson: Use PCI_DEVICE_DATA() macro for device identification Yanteng Si
2024-05-03 13:43 ` Serge Semin
2024-05-13 9:50 ` Yanteng Si
2024-04-25 13:04 ` [PATCH net-next v12 06/15] net: stmmac: dwmac-loongson: Split up the platform data initialization Yanteng Si
2024-05-03 18:08 ` Serge Semin
2024-05-13 11:07 ` Yanteng Si
2024-05-13 12:42 ` Huacai Chen
2024-05-13 14:04 ` Serge Semin
2024-05-18 10:38 ` yanteng si
2024-04-25 13:06 ` [PATCH net-next v12 07/15] net: stmmac: dwmac-loongson: Add ref and ptp clocks for Loongson Yanteng Si
2024-05-03 18:21 ` Serge Semin
2024-05-09 13:01 ` Yanteng Si
2024-04-25 13:06 ` [PATCH net-next v12 08/15] net: stmmac: dwmac-loongson: Add phy mask for Loongson GMAC Yanteng Si
2024-05-03 18:28 ` Serge Semin
2024-05-13 10:23 ` Yanteng Si
2024-04-25 13:06 ` [PATCH net-next v12 09/15] net: stmmac: dwmac-loongson: Add phy_interface " Yanteng Si
2024-04-25 14:36 ` Russell King (Oracle)
2024-04-26 10:16 ` Yanteng Si
2024-04-26 11:00 ` Russell King (Oracle)
2024-05-03 21:01 ` Serge Semin
2024-05-07 8:22 ` Russell King (Oracle) [this message]
2024-04-25 13:10 ` [PATCH net-next v12 10/15] net: stmmac: dwmac-loongson: Add full PCI support Yanteng Si
2024-05-04 20:46 ` Serge Semin
2024-05-13 10:49 ` Yanteng Si
2024-04-25 13:10 ` [PATCH net-next v12 11/15] net: stmmac: dwmac-loongson: Add loongson_dwmac_config_legacy Yanteng Si
2024-05-04 21:28 ` Serge Semin
2024-05-13 10:12 ` Yanteng Si
2024-04-25 13:10 ` [PATCH net-next v12 12/15] net: stmmac: dwmac-loongson: Fixed failure to set network speed to 1000 Yanteng Si
2024-05-04 22:13 ` Serge Semin
2024-05-13 10:16 ` Yanteng Si
2024-04-25 13:11 ` [PATCH net-next v12 13/15] net: stmmac: dwmac-loongson: Add Loongson GNET support Yanteng Si
2024-04-26 5:12 ` Yanteng Si
2024-05-05 21:50 ` Serge Semin
2024-05-17 8:12 ` Yanteng Si
2024-05-17 9:48 ` Serge Semin
2024-05-17 11:14 ` yanteng si
2024-05-06 10:39 ` Serge Semin
2024-05-07 13:35 ` Yanteng Si
2024-05-08 14:38 ` Serge Semin
2024-05-08 14:58 ` Huacai Chen
2024-05-08 15:10 ` Serge Semin
2024-05-09 8:57 ` Yanteng Si
2024-05-13 10:56 ` Serge Semin
2024-05-13 13:26 ` Huacai Chen
2024-05-13 16:11 ` Serge Semin
2024-05-14 4:58 ` Huacai Chen
2024-05-14 11:33 ` Serge Semin
2024-05-14 12:53 ` Huacai Chen
2024-05-15 8:40 ` Serge Semin
2024-05-15 13:55 ` Huacai Chen
2024-05-17 8:42 ` Yanteng Si
2024-05-17 9:07 ` Serge Semin
2024-05-17 10:37 ` Yanteng Si
2024-05-17 16:37 ` Serge Semin
2024-05-18 10:47 ` yanteng si
2024-04-25 13:11 ` [PATCH net-next v12 14/15] net: stmmac: dwmac-loongson: Move disable_force flag to _gnet_date Yanteng Si
2024-05-05 21:53 ` Serge Semin
2024-05-13 10:20 ` Yanteng Si
2024-04-25 13:11 ` [PATCH net-next v12 15/15] net: stmmac: dwmac-loongson: Add loongson module author Yanteng Si
2024-05-06 2:12 ` Huacai Chen
2024-05-06 4:44 ` Serge Semin
2024-04-25 13:19 ` [PATCH net-next v12 00/15] stmmac: Add Loongson platform support Serge Semin
2024-04-26 4:55 ` Yanteng Si
2024-04-26 11:51 ` Serge Semin
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