# Re: Errant readings on LM81 with T2080 SoC

- From: Wolfram Sang \<wsa@kernel.org\>
- Date: 2021-03-11 08:19:55 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2021/03/6296372
- Thread: https://ratatoskr.run/linux-hwmon/2021/03/6291506/t.md

```text

> Bummer. What is really weird is that you see clock stretching under
> CPU load. Normally clock stretching is triggered by the device, not
> by the host.

One example: Some hosts need an interrupt per byte to know if they
should send ACK or NACK. If that interrupt is delayed, they stretch the
clock.

```

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