Re: [lm-sensors] [PATCH] I2C: i2c_bit_add_bus should initialize SDA and SCL lines

[Krzysztof Halasa]

Hi,

"Mark M. Hoffman" <mhoffman@xxxxxxxxxxxxx> writes:

> If you can't read the line state... well, that's not actually a proper
> I2C bus anyway.

Actually you only have to be able to read SDA state, it might not be
true WRT SCL. I think most implementations use a single master and
a fixed access timing and thus only read SDA (SCL can as well be
a simple 2-state normal output from master instead of open
drain/collector or 3-state).

I'm not sure initializing the bus (in terms of ~ handshaking)
belongs to hw driver and not to the algorithm but such is live.

Thanks.
-- 
Krzysztof Halasa
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