linux-kernel - Re: [PATCH 3/3] net: stmmac: Add DWMAC glue layer for Renesas GBETH

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Message-ID: <CAMuHMdVQkzDhJmkpGah7omE7UqTgM3GSpVVDE-1mh9wW7O8vBA@mail.gmail.com>
Date: Tue, 4 Mar 2025 15:04:47 +0100
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: "Russell King (Oracle)" <linux@...linux.org.uk>
Cc: Biju Das <biju.das.jz@...renesas.com>, 
	"Lad, Prabhakar" <prabhakar.csengg@...il.com>, Andrew Lunn <andrew+netdev@...n.ch>, 
	"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Philipp Zabel <p.zabel@...gutronix.de>, Giuseppe Cavallaro <peppe.cavallaro@...com>, 
	Jose Abreu <joabreu@...opsys.com>, Alexandre Torgue <alexandre.torgue@...s.st.com>, 
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>, 
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>, 
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, 
	"linux-renesas-soc@...r.kernel.org" <linux-renesas-soc@...r.kernel.org>, 
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>, 
	Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>, 
	Emil Renner Berthing <kernel@...il.dk>
Subject: Re: [PATCH 3/3] net: stmmac: Add DWMAC glue layer for Renesas GBETH

Hi Russell,

On Tue, 4 Mar 2025 at 11:00, Russell King (Oracle)
<linux@...linux.org.uk> wrote:
> For the failure to happen, you need to check whether EEE is being used:
>
> # ethtool --show-eee ethX

Doh, that's also not supported on Starlight (BeagleV beta).

I tried unbind/rebind regardless, and it works (sort of),
using the old Beagle V Fedora rootfs on microSD:

[root@...ora-starfive starfive-dwmac]# echo 10020000.ethernet > unbind
starfive-dwmac 10020000.ethernet eth0: stmmac_dvr_remove: removing driver
starfive-dwmac 10020000.ethernet eth0: Link is Down
[root@...ora-starfive starfive-dwmac]# echo 10020000.ethernet > bind
starfive-dwmac 10020000.ethernet: IRQ eth_lpi not found
starfive-dwmac 10020000.ethernet: IRQ sfty not found
starfive-dwmac 10020000.ethernet: Hash table entries set to unexpected value 32
starfive-dwmac 10020000.ethernet: User ID: 0x59, Synopsys ID: 0x37
starfive-dwmac 10020000.ethernet:        DWMAC1000
starfive-dwmac 10020000.ethernet: DMA HW capability register supported
starfive-dwmac 10020000.ethernet: RX Checksum Offload Engine supported
starfive-dwmac 10020000.ethernet: COE Type 2
starfive-dwmac 10020000.ethernet: Wake-Up On Lan supported
starfive-dwmac 10020000.ethernet: Enhanced/Alternate descriptors
starfive-dwmac 10020000.ethernet: Enabled extended descriptors
starfive-dwmac 10020000.ethernet: Chain mode enabled
starfive-dwmac 10020000.ethernet: Enable RX Mitigation via HW Watchdog Timer
starfive-dwmac 10020000.ethernet: device MAC address fa:58:39:0a:37:37
libphy: get_phy_c22_id: mii_bus stmmac phy_id = 0x00221622
starfive-dwmac 10020000.ethernet eth0: Register MEM_TYPE_PAGE_POOL RxQ-0
starfive-dwmac 10020000.ethernet eth0: PHY [stmmac-0:07] driver
[Micrel KSZ9031 Gigabit PHY] (irq=POLL)
dwmac1000: Master AXI performs fixed burst length
starfive-dwmac 10020000.ethernet eth0: No Safety Features support found
starfive-dwmac 10020000.ethernet eth0: No MAC Management Counters available
starfive-dwmac 10020000.ethernet eth0: IEEE 1588-2008 Advanced
Timestamp supported
starfive-dwmac 10020000.ethernet eth0: configuring for phy/rgmii-id link mode
starfive-dwmac 10020000.ethernet eth0: Link is Up - 1Gbps/Full - flow
control off

Apparently the MAC address has changed, so the board got a different
IP address from my DHCP server :-(

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds