Re: [PATCH v2 1/2] i2c: enable buses to save their clock frequency in adapter

From: Wolfram Sang
Date: Sun Mar 24 2019 - 18:09:36 EST


Hi Tudor,

thanks for your patience! Now that the at91 refactoring for the I2C
slave support is merged, we can keep going forward with your patches. As
I told you personally, I am positive in general about this change.

> + u32 bus_freq_hz;

Why not unsigned int?

I also think we should have accessor functions for this new member. They
will be very simple currently because we don't really support changing
the bus frequency at runtime. However, I can see that it could be added
somewhen on top of this change, and then we need to extend the accessor
functions with some locking.

For now, I think this can be solved with simple policy: The value has to
be set before calling i2c_add_adapter(). Also, we should define that '0'
means 'value not set'.

So far about my thoughts. Any more comments from the list are welcome!

Thanks,

Wolfram

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