linux-kernel - Re: [net-next v2] net: ethernet: adi: adin1110: Reduce the MDIO

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Date: Tue, 27 Feb 2024 10:30:30 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Ciprian Regus <ciprian.regus@...log.com>
Cc: linux-kernel@...r.kernel.org, nuno.sa@...log.com, davem@...emloft.net,
 edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com, horms@...nel.org,
 michal.simek@....com, broonie@...nel.org, yangyingliang@...wei.com,
 amit.kumar-mahapatra@....com, dell.jin.code@...look.com,
 netdev@...r.kernel.org
Subject: Re: [net-next v2] net: ethernet: adi: adin1110: Reduce the MDIO_TRDONE
 poll interval

Hello:

This patch was applied to netdev/net-next.git (main)
by Paolo Abeni <pabeni@...hat.com>:

On Fri, 23 Feb 2024 18:21:27 +0200 you wrote:
> In order to do a clause 22 access to the PHY registers of the ADIN1110,
> we have to write the MDIO frame to the ADIN1110_MDIOACC register, and
> then poll the MDIO_TRDONE bit (for a 1) in the same register. The
> device will set this bit to 1 once the internal MDIO transaction is
> done. In practice, this bit takes ~50 - 60 us to be set.
> 
> The first attempt to poll the bit is right after the ADIN1110_MDIOACC
> register is written, so it will always be read as 0. The next check will
> only be done after 10 ms, which will result in the MDIO transactions
> taking a long time to complete. Reduce this polling interval to 100 us.
> Since this interval is short enough, switch the poll function to
> readx_poll_timeout_atomic() instead.
> 
> [...]

Here is the summary with links:
  - [net-next,v2] net: ethernet: adi: adin1110: Reduce the MDIO_TRDONE poll interval
    https://git.kernel.org/netdev/net-next/c/2322467a0f5d

You are awesome, thank you!
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