Re: [PATCH net v5 2/3] net: stmmac: check if MAC needs to attach to a PHY

From: Shahab Vahedi
Date: Wed Apr 05 2023 - 05:07:28 EST


Fixing the CC header. Apologies for the inconvenience.

------

Same happens on ARC HSDK [1]:

# dmesg | grep stmmaceth
stmmaceth f0008000.ethernet: use coherent DMA ops
stmmaceth f0008000.ethernet: IRQ eth_wake_irq not found
stmmaceth f0008000.ethernet: IRQ eth_lpi not found
stmmaceth f0008000.ethernet: PTP uses main clock
stmmaceth f0008000.ethernet: User ID: 0x10, Synopsys ID: 0x37
stmmaceth f0008000.ethernet: DWMAC1000
stmmaceth f0008000.ethernet: DMA HW capability register supported
stmmaceth f0008000.ethernet: RX Checksum Offload Engine supported
stmmaceth f0008000.ethernet: COE Type 2
stmmaceth f0008000.ethernet: TX Checksum insertion supported
stmmaceth f0008000.ethernet: Normal descriptors
stmmaceth f0008000.ethernet: Ring mode enabled
stmmaceth f0008000.ethernet: Enable RX Mitigation via HW Watchdog Timer
stmmaceth f0008000.ethernet: device MAC address 7e:14:df:5f:b8:78
stmmaceth f0008000.ethernet eth0: Register MEM_TYPE_PAGE_POOL RxQ-0
stmmaceth f0008000.ethernet eth0: PHY [stmmac-0:00] driver [Micrel KSZ9031 Gigabit PHY] (irq=POLL)
stmmaceth f0008000.ethernet eth0: no phy found
stmmaceth f0008000.ethernet eth0: __stmmac_open: Cannot attach to PHY (error: -19)

After reverting this patch:

# dmesg | grep stmmaceth
stmmaceth f0008000.ethernet: use coherent DMA ops
stmmaceth f0008000.ethernet: IRQ eth_wake_irq not found
stmmaceth f0008000.ethernet: IRQ eth_lpi not found
stmmaceth f0008000.ethernet: PTP uses main clock
stmmaceth f0008000.ethernet: User ID: 0x10, Synopsys ID: 0x37
stmmaceth f0008000.ethernet: DWMAC1000
stmmaceth f0008000.ethernet: DMA HW capability register supported
stmmaceth f0008000.ethernet: RX Checksum Offload Engine supported
stmmaceth f0008000.ethernet: COE Type 2
stmmaceth f0008000.ethernet: TX Checksum insertion supported
stmmaceth f0008000.ethernet: Normal descriptors
stmmaceth f0008000.ethernet: Ring mode enabled
stmmaceth f0008000.ethernet: Enable RX Mitigation via HW Watchdog Timer
stmmaceth f0008000.ethernet: device MAC address 26:05:ea:c0:66:16
stmmaceth f0008000.ethernet eth0: Register MEM_TYPE_PAGE_POOL RxQ-0
stmmaceth f0008000.ethernet eth0: PHY [stmmac-0:00] driver [Micrel KSZ9031
Gigabit PHY] (irq=POLL)
stmmaceth f0008000.ethernet eth0: No Safety Features support found
stmmaceth f0008000.ethernet eth0: PTP not supported by HW
stmmaceth f0008000.ethernet eth0: configuring for phy/rgmii-id link mode
stmmaceth f0008000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off

[1]
arch/arc/boot/dts/hsdk.dts

--
Shahab