From: Richard Cochran <richardcochran@gmail.com>
To: Johannes Zink <j.zink@pengutronix.de>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>,
Jose Abreu <joabreu@synopsys.com>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Russell King <linux@armlinux.org.uk>,
patchwork-jzi@pengutronix.de, netdev@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, kernel@pengutronix.de,
kernel test robot <lkp@intel.com>
Subject: Re: [PATCH v2] net: stmmac: correct MAC propagation delay
Date: Thu, 27 Jul 2023 06:36:43 -0700 [thread overview]
Message-ID: <ZMJy6yt4CL250x6Q@hoboy.vegasvil.org> (raw)
In-Reply-To: <729dd79e-83aa-0237-1edd-1662a6ae28cd@pengutronix.de>
On Thu, Jul 27, 2023 at 09:20:10AM +0200, Johannes Zink wrote:
> Hi Richard,
>
> On 7/26/23 22:57, Richard Cochran wrote:
> > On Mon, Jul 24, 2023 at 12:01:31PM +0200, Johannes Zink wrote:
> >
> > Earlier versions of the IP core return zero from these...
> >
> > > +#define PTP_TS_INGR_LAT 0x68 /* MAC internal Ingress Latency */
> > > +#define PTP_TS_EGR_LAT 0x6c /* MAC internal Egress Latency */
> >
>
> good catch. Gonna send a v3 with a check to and set the values for dwmac v5 only.
AFAICT there is no feature bit that indicates the presence or absence
of these two registers.
Are you sure that *all* v5 IP cores have these?
I am not sure.
Thanks,
Richard
next prev parent reply other threads:[~2023-07-27 13:36 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-24 10:01 Johannes Zink
2023-07-26 3:06 ` Jakub Kicinski
2023-07-26 3:22 ` Richard Cochran
2023-07-26 3:39 ` Jakub Kicinski
2023-07-26 6:04 ` Marc Kleine-Budde
2023-07-26 15:34 ` Richard Cochran
2023-07-27 6:40 ` Johannes Zink
2023-07-27 13:30 ` Richard Cochran
2023-07-26 6:10 ` Johannes Zink
2023-07-26 15:43 ` Richard Cochran
2023-07-27 6:39 ` Johannes Zink
2023-07-27 6:55 ` Johannes Zink
2023-07-27 7:41 ` Johannes Zink
2023-07-27 7:15 ` Kurt Kanzenbach
2023-07-27 7:18 ` Johannes Zink
2023-07-26 5:50 ` Marc Kleine-Budde
2023-07-26 3:50 ` patchwork-bot+netdevbpf
2023-07-26 18:00 ` Richard Cochran
2023-07-27 6:42 ` Johannes Zink
2023-07-27 13:34 ` Richard Cochran
2023-07-26 20:57 ` Richard Cochran
2023-07-27 7:20 ` Johannes Zink
2023-07-27 13:36 ` Richard Cochran [this message]
2023-07-31 7:00 ` Johannes Zink
2023-07-31 13:44 ` Richard Cochran
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