From: Fabio Estevam <festevam@gmail.com>
To: Marc Kleine-Budde <mkl@pengutronix.de>
Cc: linux-can@vger.kernel.org,
Oliver Hartkopp <socketcan@hartkopp.net>,
"Paul E . McKenney" <paulmck@kernel.org>
Subject: Re: Testing two MCP2518FD's on i.MX8MM
Date: Mon, 21 Jun 2021 10:07:22 -0300 [thread overview]
Message-ID: <CAOMZO5BgUHHsT_abpPgOdgVXNSrDApouhtWydvS9soYH65PJww@mail.gmail.com> (raw)
In-Reply-To: <20210621123704.yc7ohwbuedofoq53@pengutronix.de>
Hi Marc,
On Mon, Jun 21, 2021 at 9:37 AM Marc Kleine-Budde <mkl@pengutronix.de> wrote:
> Can you test if
> https://lore.kernel.org/r/20210621123436.2897023-1-mkl@pengutronix.de
> fixes your problem? We still have to check if lockdep complains...
I tested your series and I don't see the initial RCU errors after
launching the application, but
now it causes a storm of cansequence errors:
root@verdin-imx8mm:~# ./cantest.sh start
root@verdin-imx8mm:~# interface = can1, family = 29, type = 3, proto = 1
interface = can1, family = 29, type = 3, proto = 1
interface = can0, family = 29, type = 3, proto = 1
interface = can0, family = 29, type = 3, proto = 1
2020-02-12 19:36:05:161 sequence CNT: 1304, RX: 39 expected:
24 missing: 15 skt overfl d: 0 a: 0 delta: 15
incident: 1 seq_wrap RX: 5 sequ_wrap_expected: 5 overall
lost: 15
2020-02-12 19:36:05:406 sequence CNT: 3015, RX: 230 expected:
199 missing: 31 skt overfl d: 0 a: 0 delta: 31
incident: 1 seq_wrap RX: 11 sequ_wrap_expected: 11 overall
lost: 31
2020-02-12 19:36:05:455 sequence CNT: 742, RX: 238 expected:
230 missing: 8 skt overfl d: 0 a: 0 delta: 8
incident: 2 seq_wrap RX: 7 sequ_wrap_expected: 7 overall
lost: 23
2020-02-12 19:36:05:730 sequence CNT: 1287, RX: 8 expected:
7 missing: 1 skt overfl d: 0 a: 0 delta: 1
incident: 3 seq_wrap RX: 12 sequ_wrap_expected: 12 overall
lost: 24
2020-02-12 19:36:05:746 sequence CNT: 991, RX: 228 expected:
223 missing: 5 skt overfl d: 0 a: 0 delta: 5
incident: 4 seq_wrap RX: 15 sequ_wrap_expected: 15 overall
lost: 29
....
For mcp2518fd usage with imx8mm: would you recommend SPI in PIO or DMA mode?
Looking at your imx6dl devicetree it seems you use DMA.
Thanks
prev parent reply other threads:[~2021-06-21 13:07 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAOMZO5CwS-cO3W148YHVYFwcL3QC8oFJfeQBb+WN=QgEPU7AsQ@mail.gmail.com>
2021-06-12 15:10 ` Testing two MCP2518FD's on i.MX8MM Fabio Estevam
2021-06-15 7:15 ` Marc Kleine-Budde
2021-06-21 12:24 ` Fabio Estevam
2021-06-21 12:37 ` Marc Kleine-Budde
2021-06-21 13:07 ` Fabio Estevam [this message]
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