From: Richard Cochran <richardcochran@gmail.com>
To: Vladimir Oltean <olteanv@gmail.com>
Cc: Mark Brown <broonie@kernel.org>,
Hubert Feurstein <h.feurstein@gmail.com>,
Miroslav Lichvar <mlichvar@redhat.com>,
Andrew Lunn <andrew@lunn.ch>,
Florian Fainelli <f.fainelli@gmail.com>,
linux-spi@vger.kernel.org, netdev <netdev@vger.kernel.org>
Subject: Re: [PATCH spi for-5.4 0/5] Deterministic SPI latency with NXP DSPI driver
Date: Thu, 22 Aug 2019 22:22:17 -0700 [thread overview]
Message-ID: <20190823052217.GD2502@localhost> (raw)
In-Reply-To: <CA+h21hrELeUKbfGD3n=BL741QN9m3SaoJJ0y+q_uthdxvSFVRg@mail.gmail.com>
On Thu, Aug 22, 2019 at 07:13:12PM +0300, Vladimir Oltean wrote:
> You do think that I understand the problem? But I don't!
;^)
> > And who generates Local_sync_resp?
> >
>
> Local_sync_resp is the same as Local_sync_req except maybe with a
> custom tag added by the switch. Irrelevant as long as the DSA master
> can timestamp it.
So this is point why it won't work. The time stamping logic in the
switch only recognizes PTP frames.
Thanks,
Richard
next prev parent reply other threads:[~2019-08-23 5:22 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-18 18:25 [PATCH spi for-5.4 0/5] Deterministic SPI latency with NXP DSPI driver Vladimir Oltean
2019-08-18 18:25 ` [PATCH spi for-5.4 1/5] spi: Use an abbreviated pointer to ctlr->cur_msg in __spi_pump_messages Vladimir Oltean
2019-08-20 18:21 ` Mark Brown
2019-08-20 19:36 ` Vladimir Oltean
2019-08-21 11:01 ` Mark Brown
2019-08-18 18:25 ` [PATCH spi for-5.4 2/5] spi: Add a PTP system timestamp to the transfer structure Vladimir Oltean
2019-08-22 17:11 ` Mark Brown
2019-08-24 12:38 ` Vladimir Oltean
2019-08-27 19:01 ` Mark Brown
2019-08-18 18:25 ` [PATCH spi for-5.4 3/5] spi: spi-fsl-dspi: Use poll mode in case the platform IRQ is missing Vladimir Oltean
2019-08-22 17:38 ` Mark Brown
2019-08-18 18:25 ` [PATCH spi for-5.4 4/5] spi: spi-fsl-dspi: Implement the PTP system timestamping for TCFQ mode Vladimir Oltean
2019-08-18 18:26 ` [PATCH spi for-5.4 5/5] spi: spi-fsl-dspi: Disable interrupts and preemption during poll mode transfer Vladimir Oltean
2019-08-20 15:57 ` [PATCH spi for-5.4 0/5] Deterministic SPI latency with NXP DSPI driver Vladimir Oltean
2019-08-20 16:57 ` Andrew Lunn
2019-08-21 4:38 ` Richard Cochran
2019-08-21 14:08 ` Richard Cochran
2019-08-21 20:17 ` Vladimir Oltean
2019-08-22 14:16 ` Richard Cochran
2019-08-22 14:56 ` Andrew Lunn
2019-08-22 14:58 ` Vladimir Oltean
2019-08-22 16:05 ` Richard Cochran
2019-08-22 16:13 ` Vladimir Oltean
2019-08-23 5:22 ` Richard Cochran [this message]
2019-08-24 12:13 ` Vladimir Oltean
2019-08-22 16:10 ` Richard Cochran
2019-08-21 4:42 ` Richard Cochran
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