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From: Atish Patra <atish.patra@wdc.com>
To: Andreas Schwab <schwab@suse.de>,
	Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
	"linux-riscv@lists.infradead.org"
	<linux-riscv@lists.infradead.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: macb: probe of 10090000.ethernet failed with error -110
Date: Wed, 28 Nov 2018 10:15:28 -0800	[thread overview]
Message-ID: <f1e5d078-bc4d-910e-8717-f5870a0e994a@wdc.com> (raw)
Message-ID: <20181128181528.YpIqPpp9KgjCFD6WK5JEZIX2ln_iV8ZgrpvI0sNQoks@z> (raw)
In-Reply-To: <mvmefb5fr6d.fsf@suse.de>

On 11/28/18 2:11 AM, Andreas Schwab wrote:
> The PHY probing of the macb driver appears to be rather unreliable.
> Most of the time it doesn't work the first time, I have to reload the
> module several times to let it succeed.
> 
> [   40.530000] macb: GEM doesn't support hardware ptp.
> [   40.530000] libphy: MACB_mii_bus: probed
> [   41.450000] macb 10090000.ethernet (unnamed net_device) (uninitialized): Could not attach to PHY
> [   41.510000] macb: probe of 10090000.ethernet failed with error -110
> [ 1354.400000] macb: GEM doesn't support hardware ptp.
> [ 1354.410000] libphy: MACB_mii_bus: probed
> [ 1355.260000] macb 10090000.ethernet (unnamed net_device) (uninitialized): Could not attach to PHY
> [ 1355.300000] macb: probe of 10090000.ethernet failed with error -110
> [ 1358.100000] macb: GEM doesn't support hardware ptp.
> [ 1358.110000] libphy: MACB_mii_bus: probed
> [ 1358.310000] Microsemi VSC8541 SyncE 10090000.ethernet-ffffffff:00: attached PHY driver [Microsemi VSC8541 SyncE] (mii_bus:phy_addr=10090000.ethernet-ffffffff:00, irq=POLL)
> [ 1358.320000] macb 10090000.ethernet eth0: Cadence GEM rev 0x10070109 at 0x10090000 irq 12 (70:b3:d5:92:f1:07)
> 
> This is 4.20-rc4 on a HiFive-U.
> 
> Andreas.
> 

Here is my previous analysis on the issue.
http://lists.infradead.org/pipermail/linux-riscv/2018-September/001503.html

Not sure if you have tried the hack already. But here it is anyways.
https://github.com/atishp04/riscv-linux/commit/aa230e7dc2ab01db5b630f427e57297ffc25c884


Regards,
Atish

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  parent reply	other threads:[~2018-11-28 18:15 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-28 10:10 macb: probe of 10090000.ethernet failed with error -110 Andreas Schwab
2018-11-28 10:10 ` Andreas Schwab
2018-11-28 18:15 ` Atish Patra [this message]
2018-11-28 18:15   ` Atish Patra
2018-11-28 21:33   ` Florian Fainelli
2018-11-28 21:33     ` Florian Fainelli
2018-11-29  2:08     ` Palmer Dabbelt
2018-11-29  2:08       ` Palmer Dabbelt
2018-11-29  2:28       ` Andrew Lunn
2018-11-29  2:28         ` Andrew Lunn
2018-11-29  3:01         ` Palmer Dabbelt
2018-11-29  3:01           ` Palmer Dabbelt
2018-11-29  5:55       ` Andrew Lunn
2018-11-29  5:55         ` Andrew Lunn
2018-11-29 11:55         ` Andreas Schwab
  -- strict thread matches above, loose matches on Subject: below --
2018-08-24 17:18 Atish Patra
2018-09-15  0:07 ` Atish Patra
2019-04-10  9:50   ` Andreas Schwab

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