netdev - Re: [PATCH net 0/3] Add I2C bus lock for Wangxun

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Message-ID: <888f78a9-dea9-4f66-a4d0-00a57039733d@lunn.ch>
Date: Mon, 26 Aug 2024 03:32:34 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Jiawen Wu <jiawenwu@...stnetic.com>
Cc: andi.shyti@...nel.org, jarkko.nikula@...ux.intel.com,
	andriy.shevchenko@...ux.intel.com, mika.westerberg@...ux.intel.com,
	jsd@...ihalf.com, davem@...emloft.net, edumazet@...gle.com,
	kuba@...nel.org, pabeni@...hat.com, rmk+kernel@...linux.org.uk,
	piotr.raczynski@...el.com, linux-i2c@...r.kernel.org,
	netdev@...r.kernel.org, mengyuanlou@...-swift.com,
	duanqiangwen@...-swift.com
Subject: Re: [PATCH net 0/3] Add I2C bus lock for Wangxun

On Fri, Aug 23, 2024 at 11:02:39AM +0800, Jiawen Wu wrote:
> Sometimes the driver can not get the SFP information because the I2C bus
> is accessed by the firmware at the same time.

Please could you explain this some more. What firmware?

There some registers which are clear on read. They don't work when you
have multiple entities reading them.

	Andrew