On 11 August 2025 at 06:12 pm, Sven Peter wrote:
hi,
On 10.08.25 18:47, Christian Zigotzky wrote:
Hello Sven,
Since the kernel 6.16 we have the following messages during the boot.
[ 9.459706] i2c-pasemi 0000:00:1c.0: NACK, status 0x08210100
[ 9.649736] i2c-pasemi 0000:00:1c.0: Issuing reset due to status
0x08210100 (xfstatus 0x00000001)
[ 9.690696] i2c-pasemi 0000:00:1c.1: NACK, status 0x08210100
[ 9.708651] i2c-pasemi 0000:00:1c.1: Issuing reset due to status
0x08210100 (xfstatus 0x00000001)
[ 9.892693] i2c-pasemi 0000:00:1c.2: NACK, status 0x08210100
[ 9.911535] i2c-pasemi 0000:00:1c.2: Issuing reset due to status
0x08210100 (xfstatus 0x00000001)
What exactly do these messages mean?
Do you just see these messages or are there also any other issues like a
device on the i2c bus not working anymore when it worked fine before?
We added some additional logging recently and I suspect that this has
always been happening and no one noticed.
Sven
Hello Sven,
Thank you for your answer.
I just see these messages. There aren't any other issues.
Further information:
$ cat /proc/version
Linux version 6.12.22-powerpc64-smp (geeko@buildhost)
(powerpc64-suse-linux-gcc (SUSE Linux) 7.5.0, GNU ld (GNU Binutils;
devel:gcc / SLE-15) 2.43.1.20240828-150300.536) #1 SMP Tue Apr 8
09:47:26 CEST 2025
$ sudo dmesg | grep -i i2c
[ 5.032840] i2c_dev: i2c /dev entries driver
[ 5.440998] i2c i2c-9: Detected TI TMP423 chip at 0x4c
$ sudo i2cdetect -l
[sudo] password for christian:
i2c-3 i2c Radeon i2c bit bus 0x93 I2C adapter
i2c-10 i2c PA Semi SMBus adapter (0000:00:1c.1) I2C adapter
i2c-1 i2c Radeon i2c bit bus 0x91 I2C adapter
i2c-8 i2c card0-DP-1 I2C adapter
i2c-6 i2c Radeon i2c bit bus 0x96 I2C adapter
i2c-4 i2c Radeon i2c bit bus 0x94 I2C adapter
i2c-11 i2c PA Semi SMBus adapter (0000:00:1c.2) I2C adapter
i2c-2 i2c Radeon i2c bit bus 0x92 I2C adapter
i2c-0 i2c Radeon i2c bit bus 0x90 I2C adapter
i2c-9 i2c PA Semi SMBus adapter (0000:00:1c.0) I2C adapter
i2c-7 i2c Radeon i2c bit bus 0x97 I2C adapter
i2c-5 i2c Radeon i2c bit bus 0x95 I2C adapter
$ cat /proc/version
Linux version 6.16.0-powerpc64-smp (geeko@buildhost)
(powerpc64-suse-linux-gcc (SUSE Linux) 11.5.0, GNU ld (GNU Binutils;
devel:gcc / SLE-15) 2.43.1.20240828-150300.536) #1 SMP Mon Jul 28
06:44:21 CEST 2025
$ sudo dmesg | grep -i i2c
[sudo] password for christian:
[ 3.381852] i2c_dev: i2c /dev entries driver
[ 3.591326] i2c-pasemi 0000:00:1c.0: NACK, status 0x08210100
[ 3.604687] i2c-pasemi 0000:00:1c.0: Issuing reset due to status
0x08210100 (xfstatus 0x00000001)
[ 3.623181] i2c i2c-9: Detected TI TMP423 chip at 0x4c
[ 3.640313] i2c-pasemi 0000:00:1c.0: NACK, status 0x08210100
[ 3.653561] i2c-pasemi 0000:00:1c.0: Issuing reset due to status
0x08210100 (xfstatus 0x00000001)
[ 3.667314] i2c-pasemi 0000:00:1c.0: NACK, status 0x08210100
[ 3.680416] i2c-pasemi 0000:00:1c.0: Issuing reset due to status
0x08210100 (xfstatus 0x00000001)
[ 3.694312] i2c-pasemi 0000:00:1c.0: NACK, status 0x08210100
[ 3.708309] i2c-pasemi 0000:00:1c.1: NACK, status 0x08210100
[ 3.721268] i2c-pasemi 0000:00:1c.1: Issuing reset due to status
0x08210100 (xfstatus 0x00000001)
[ 3.735309] i2c-pasemi 0000:00:1c.1: NACK, status 0x08210100
[ 3.748276] i2c-pasemi 0000:00:1c.1: Issuing reset due to status
0x08210100 (xfstatus 0x00000001)
[ 3.762309] i2c-pasemi 0000:00:1c.1: NACK, status 0x08210100
[ 3.775289] i2c-pasemi 0000:00:1c.1: Issuing reset due to status
0x08210100 (xfstatus 0x00000001)
[ 3.789309] i2c-pasemi 0000:00:1c.1: NACK, status 0x08210100
[ 3.802265] i2c-pasemi 0000:00:1c.1: Issuing reset due to status
0x08210100 (xfstatus 0x00000001)
[ 3.816315] i2c-pasemi 0000:00:1c.1: NACK, status 0x08210100
[ 3.830308] i2c-pasemi 0000:00:1c.2: NACK, status 0x08210100
[ 3.843392] i2c-pasemi 0000:00:1c.2: Issuing reset due to status
0x08210100 (xfstatus 0x00000001)
[ 3.857308] i2c-pasemi 0000:00:1c.2: NACK, status 0x08210100
[ 3.870637] i2c-pasemi 0000:00:1c.2: Issuing reset due to status
0x08210100 (xfstatus 0x00000001)
[ 3.884307] i2c-pasemi 0000:00:1c.2: NACK, status 0x08210100
[ 3.897148] i2c-pasemi 0000:00:1c.2: Issuing reset due to status
0x08210100 (xfstatus 0x00000001)
[ 3.911309] i2c-pasemi 0000:00:1c.2: NACK, status 0x08210100
[ 3.924874] i2c-pasemi 0000:00:1c.2: Issuing reset due to status
0x08210100 (xfstatus 0x00000001)
[ 3.939307] i2c-pasemi 0000:00:1c.2: NACK, status 0x08210100
[ 9.335546] i2c-pasemi 0000:00:1c.0: Issuing reset due to status
0x08210100 (xfstatus 0x00000001)
sudo i2cdetect -l
[sudo] password for christian:
i2c-3 i2c Radeon i2c bit bus 0x93 I2C adapter
i2c-10 i2c PA Semi SMBus adapter (0000:00:1c.1) I2C adapter
i2c-1 i2c Radeon i2c bit bus 0x91 I2C adapter
i2c-8 i2c card0-DP-1 I2C adapter
i2c-6 i2c Radeon i2c bit bus 0x96 I2C adapter
i2c-4 i2c Radeon i2c bit bus 0x94 I2C adapter
i2c-11 i2c PA Semi SMBus adapter (0000:00:1c.2) I2C adapter
i2c-2 i2c Radeon i2c bit bus 0x92 I2C adapter
i2c-0 i2c Radeon i2c bit bus 0x90 I2C adapter
i2c-9 i2c PA Semi SMBus adapter (0000:00:1c.0) I2C adapter
i2c-7 i2c Radeon i2c bit bus 0x97 I2C adapter
i2c-5 i2c Radeon i2c bit bus 0x95 I2C adapter
Cheers,
Christian
