linux-kernel - Re: [PATCH net-next v1] net: microchip: lan743x: Reduce PTP timeout on HW failure

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Date: Mon, 06 May 2024 10:00:27 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Rengarajan S <rengarajan.s@...rochip.com>
Cc: bryan.whitehead@...rochip.com, UNGLinuxDriver@...rochip.com,
 davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
 richardcochran@...il.com, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v1] net: microchip: lan743x: Reduce PTP timeout on HW
 failure

Hello:

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

On Thu, 2 May 2024 10:33:00 +0530 you wrote:
> The PTP_CMD_CTL is a self clearing register which controls the PTP clock
> values. In the current implementation driver waits for a duration of 20
> sec in case of HW failure to clear the PTP_CMD_CTL register bit. This
> timeout of 20 sec is very long to recognize a HW failure, as it is
> typically cleared in one clock(<16ns). Hence reducing the timeout to 1 sec
> would be sufficient to conclude if there is any HW failure observed. The
> usleep_range will sleep somewhere between 1 msec to 20 msec for each
> iteration. By setting the PTP_CMD_CTL_TIMEOUT_CNT to 50 the max timeout
> is extended to 1 sec.
> 
> [...]

Here is the summary with links:
  - [net-next,v1] net: microchip: lan743x: Reduce PTP timeout on HW failure
    https://git.kernel.org/netdev/net-next/c/b1de3c0df7ab

You are awesome, thank you!
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