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Message-ID: <CAOAjy5RNz8mGi4XjP_8x-aZo5VhXRFF446R7NgcQGEKWVpUV1Q@mail.gmail.com>
Date: Fri, 17 Jul 2020 12:50:07 +0000
From: Martin Rowe <martin.p.rowe@...il.com>
To: Russell King - ARM Linux admin <linux@...linux.org.uk>
Cc: Andrew Lunn <andrew@...n.ch>, netdev@...r.kernel.org,
davem@...emloft.net, vivien.didelot@...il.com
Subject: Re: bug: net: dsa: mv88e6xxx: unable to tx or rx with Clearfog GT 8K
(with git bisect)
On Fri, 17 Jul 2020 at 09:22, Russell King - ARM Linux admin
<linux@...linux.org.uk> wrote:
> The key file is /sys/kernel/debug/mv88e6xxx.0/regs - please send the
> contents of that file.
$ cat regs.broken
GLOBAL GLOBAL2 SERDES 0 1 2 3 4 5
0: c800 0 ffff 9e07 9e4f 100f 100f 9e4f 170b
1: 0 803e ffff 3 3 3 3 3 201f
2: 0 0 ffff ff00 0 0 0 0 0
3: 0 0 ffff 3400 3400 3400 3400 3400 3400
4: 40a8 258 ffff 7c 43f 43c 43c 43f 373f
5: 1000 4f0 ffff 0 0 0 0 0 0
6: 0 1f0f ffff 7e 7c 7a 76 6e 5f
7: 0 703f ffff 1 0 0 0 0 0
8: 0 7800 ffff 2080 2080 2080 2080 2080 2080
9: 0 1500 ffff 1 1 1 1 1 1
a: 509 0 ffff 8000 0 0 0 0 0
b: 3000 31ff ffff 1 2 4 8 10 0
c: 207 0 ffff 0 0 0 0 0 0
d: 3333 50f ffff 0 0 0 0 0 0
e: 1 4 ffff 0 0 0 0 0 0
f: 3 f00 ffff 9100 9100 9100 9100 9100 dada
10: 0 0 ffff 0 0 0 0 0 0
11: 0 0 ffff 0 0 0 0 0 0
12: 5555 0 ffff 0 0 0 0 0 0
13: 5555 300 ffff 0 0 0 0 0 0
14: aaaa 0 ffff 0 0 0 0 0 0
15: aaaa 0 ffff 0 0 0 0 0 0
16: ffff 0 0 0 33 33 33 33 0
17: ffff 0 ffff 0 0 0 0 0 0
18: fa41 15f6 ffff 3210 3210 3210 3210 3210 3210
19: 0 0 ffff 7654 7654 7654 7654 7654 7654
1a: 3ff 0 ffff 0 0 0 0 1ea0 a100
1b: 1fc 110f ffff 8000 8000 8000 8000 8000 8000
1c: 7c0 0 ffff 0 0 0 0 0 0
1d: 1400 0 ffff 0 0 0 0 0 0
1e: 0 0 ffff f000 f000 f000 f000 f000 f000
1f: 0 0 ffff 0 2f 0 0 2e 1
$ cat regs.reverted
GLOBAL GLOBAL2 SERDES 0 1 2 3 4 5
0: c800 0 ffff 9e07 9e4f 100f 100f 9e4f 1f0b
1: 0 803e ffff 3 3 3 3 3 203f
2: 0 0 ffff ff00 0 0 0 0 0
3: 0 0 ffff 3400 3400 3400 3400 3400 3400
4: 40a8 258 ffff 7c 43d 43c 43c 43f 373f
5: 1000 4f0 ffff 0 0 0 0 0 0
6: 0 1f0f ffff 7e 7c 7a 76 6e 5f
7: 0 703f ffff 1 0 0 0 0 0
8: 0 7800 ffff 2080 2080 2080 2080 2080 2080
9: 0 1500 ffff 1 1 1 1 1 1
a: 509 0 ffff 8000 0 0 0 0 0
b: 3000 31ff ffff 1 2 4 8 10 0
c: 207 0 ffff 0 0 0 0 0 0
d: 3333 58b ffff 0 0 0 0 0 0
e: 1 4 ffff 0 0 0 0 0 0
f: 3 f00 ffff 9100 9100 9100 9100 9100 dada
10: 0 0 ffff 0 0 0 0 0 0
11: 0 0 ffff 0 0 0 0 0 0
12: 5555 0 ffff 0 0 0 0 0 0
13: 5555 300 ffff 0 0 0 0 0 0
14: aaaa 0 ffff 0 0 0 0 0 0
15: aaaa 0 ffff 0 0 0 0 0 0
16: ffff 0 0 0 33 33 33 33 0
17: ffff 0 ffff 0 0 0 0 0 0
18: fa41 15f6 ffff 3210 3210 3210 3210 3210 3210
19: 0 0 ffff 7654 7654 7654 7654 7654 7654
1a: 3ff 0 ffff 0 0 0 0 1ea0 a100
1b: 1fc 110f ffff 8000 8000 8000 8000 8000 8000
1c: 7c0 0 ffff 0 0 0 0 0 0
1d: 1400 0 ffff 0 0 0 0 0 0
1e: 0 0 ffff f000 f000 f000 f000 f000 f000
1f: 0 0 ffff 0 91 0 0 7b 34
Both with 5.8.0-rc4, broken is just mainline, reverted has the one
commit reverted.
Martin
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