linux-kernel - Re: [PATCH net-next 0/3] net: stmmac: Convert to phylink

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Date:   Mon, 22 Jul 2019 14:42:40 +0200
From:   Ondřej Jirman <megi@....cz>
To:     Jose Abreu <Jose.Abreu@...opsys.com>
Cc:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        Joao Pinto <Joao.Pinto@...opsys.com>,
        "David S . Miller" <davem@...emloft.net>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Russell King <linux@...linux.org.uk>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>
Subject: Re: [PATCH net-next 0/3] net: stmmac: Convert to phylink

Hello Jose,

On Tue, Jun 11, 2019 at 05:18:44PM +0200, Jose Abreu wrote:
> [ Hope this diff looks better (generated with --minimal) ]
> 
> This converts stmmac to use phylink. Besides the code redution this will
> allow to gain more flexibility.

I'm testing 5.3-rc1 and on Orange Pi 3 (uses stmmac-sun8i.c glue) compared to
5.2 it fails to detect 1000Mbps link and the driver negotiates just a 10Mbps speed.

After going through stmmac patches since 5.2, I think it may be realted to this
series, but I'm not completely sure. You'll probably have a better understanding
of the changes. Do you have an idea what might be wrong? Please, see some logs
below.

thank you and regards,
	Ondrej

On 5.3-rc1 I see:

[    6.116512] dwmac-sun8i 5020000.ethernet eth0: PHY [stmmac-0:01] driver [RTL8211E Gigabit Ethernet]
[    6.116522] dwmac-sun8i 5020000.ethernet eth0: phy: setting supported 00,00000000,000062cf advertising 00,00000000,000062cf
[    6.118714] dwmac-sun8i 5020000.ethernet eth0: No Safety Features support found
[    6.118725] dwmac-sun8i 5020000.ethernet eth0: No MAC Management Counters available
[    6.118730] dwmac-sun8i 5020000.ethernet eth0: PTP not supported by HW
[    6.118738] dwmac-sun8i 5020000.ethernet eth0: configuring for phy/rgmii link mode
[    6.118747] dwmac-sun8i 5020000.ethernet eth0: phylink_mac_config: mode=phy/rgmii/Unknown/Unknown adv=00,00000000,000062cf pause=10 link=0 an=1
[    6.126099] dwmac-sun8i 5020000.ethernet eth0: phy link down rgmii/Unknown/Unknown
[    6.276325] random: crng init done
[    6.276338] random: 7 urandom warning(s) missed due to ratelimiting
[    7.543987] zram0: detected capacity change from 0 to 402653184
[    7.667702] Adding 393212k swap on /dev/zram0.  Priority:10 extents:1 across:393212k SS

... delay due to other causes ...

[   28.640234] dwmac-sun8i 5020000.ethernet eth0: phy link up rgmii/10Mbps/Full
[   28.640295] dwmac-sun8i 5020000.ethernet eth0: phylink_mac_config: mode=phy/rgmii/10Mbps/Full adv=00,00000000,00000000 pause=0f link=1 an=0
[   28.640324] dwmac-sun8i 5020000.ethernet eth0: Link is Up - 10Mbps/Full - flow control rx/tx

Settings for eth0:
	Supported ports: [ TP MII ]
	Supported link modes:   10baseT/Half 10baseT/Full 
	                        100baseT/Half 100baseT/Full 
	Supported pause frame use: Symmetric Receive-only
	Supports auto-negotiation: Yes
	Supported FEC modes: Not reported
	Advertised link modes:  10baseT/Half 10baseT/Full 
	                        100baseT/Half 100baseT/Full 
	Advertised pause frame use: Symmetric Receive-only
	Advertised auto-negotiation: Yes
	Advertised FEC modes: Not reported
	Link partner advertised link modes:  10baseT/Half 10baseT/Full 
	Link partner advertised pause frame use: Symmetric Receive-only
	Link partner advertised auto-negotiation: Yes
	Link partner advertised FEC modes: Not reported
	Speed: 10Mb/s
	Duplex: Full
	Port: MII
	PHYAD: 1
	Transceiver: internal
	Auto-negotiation: on
	Supports Wake-on: d
	Wake-on: d
	Current message level: 0x0000003f (63)
			       drv probe link timer ifdown ifup
	Link detected: yes

On 5.2 it looks like this:

[    1.153596] dwmac-sun8i 5020000.ethernet: PTP uses main clock
[    1.416221] dwmac-sun8i 5020000.ethernet: PTP uses main clock
[    1.522735] dwmac-sun8i 5020000.ethernet: Current syscon value is not the default 58000 (expect 50000)
[    1.522750] dwmac-sun8i 5020000.ethernet: No HW DMA feature register supported
[    1.522753] dwmac-sun8i 5020000.ethernet: RX Checksum Offload Engine supported
[    1.522755] dwmac-sun8i 5020000.ethernet: COE Type 2
[    1.522758] dwmac-sun8i 5020000.ethernet: TX Checksum insertion supported
[    1.522761] dwmac-sun8i 5020000.ethernet: Normal descriptors
[    1.522763] dwmac-sun8i 5020000.ethernet: Chain mode enabled
[    5.352833] dwmac-sun8i 5020000.ethernet eth0: No Safety Features support found
[    5.352842] dwmac-sun8i 5020000.ethernet eth0: No MAC Management Counters available
[    5.352846] dwmac-sun8i 5020000.ethernet eth0: PTP not supported by HW
[   10.463072] dwmac-sun8i 5020000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off

Settings for eth0:
	Supported ports: [ TP MII ]
	Supported link modes:   10baseT/Half 10baseT/Full
	                        100baseT/Half 100baseT/Full
	                        1000baseT/Half 1000baseT/Full
	Supported pause frame use: Symmetric Receive-only
	Supports auto-negotiation: Yes
	Supported FEC modes: Not reported
	Advertised link modes:  10baseT/Half 10baseT/Full
	                        100baseT/Half 100baseT/Full
	                        1000baseT/Half 1000baseT/Full
	Advertised pause frame use: No
	Advertised auto-negotiation: Yes
	Advertised FEC modes: Not reported
	Link partner advertised link modes:  10baseT/Half 10baseT/Full
	                                     100baseT/Half 100baseT/Full
	                                     1000baseT/Full
	Link partner advertised pause frame use: Symmetric Receive-only
	Link partner advertised auto-negotiation: Yes
	Link partner advertised FEC modes: Not reported
	Speed: 1000Mb/s
	Duplex: Full
	Port: MII
	PHYAD: 1
	Transceiver: internal
	Auto-negotiation: on
	Supports Wake-on: d
	Wake-on: d
	Current message level: 0x0000003f (63)
			       drv probe link timer ifdown ifup
	Link detected: yes


> Cc: Joao Pinto <jpinto@...opsys.com>
> Cc: David S. Miller <davem@...emloft.net>
> Cc: Giuseppe Cavallaro <peppe.cavallaro@...com>
> Cc: Alexandre Torgue <alexandre.torgue@...com>
> Cc: Russell King <linux@...linux.org.uk>
> Cc: Andrew Lunn <andrew@...n.ch>
> Cc: Florian Fainelli <f.fainelli@...il.com>
> Cc: Heiner Kallweit <hkallweit1@...il.com>
> 
> Jose Abreu (3):
>   net: stmmac: Prepare to convert to phylink
>   net: stmmac: Start adding phylink support
>   net: stmmac: Convert to phylink and remove phylib logic
> 
>  drivers/net/ethernet/stmicro/stmmac/Kconfig   |   3 +-
>  drivers/net/ethernet/stmicro/stmmac/stmmac.h  |   7 +-
>  .../ethernet/stmicro/stmmac/stmmac_ethtool.c  |  81 +---
>  .../net/ethernet/stmicro/stmmac/stmmac_main.c | 391 ++++++++----------
>  .../ethernet/stmicro/stmmac/stmmac_platform.c |  21 +-
>  5 files changed, 190 insertions(+), 313 deletions(-)
> 
> -- 
> 2.21.0
> 

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