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TPS65070 Clock stretching

Other Parts Discussed in Thread: TPS65070

Hi,

I would like to know if someone encountered a clock stretching issue with TPS65070.

I'm using it to control my touchscreen and I receive a lot of errors from linux i2c driver. I investigated and found that the TPS is doing clock stretching.

The PMIC (tps65070) is rated to work at 400khz, but even at 20khz it seems to need more time to response (sometime).

On a test that I did there was 2 successive reads to register 02h with a delay of 85 msec between. The first went right but while the next read, the salve put the clock low to stretch it. It sounds like a problem to me because the chip was not receiving a lot of messages and it stretched the clock. I cannot find any place in the datasheet that is talking about that issue.

Any ideas?

Thank you.

Regards,

Nicolas