[PATCH v3] i2c:at91: Add device tree property to set clock-frequency

[Wolfram Sang]

> > Examples :
> > @@ -23,6 +24,7 @@ i2c0: i2c at fff84000 {
> > 	#address-cells = <1>;
> > 	#size-cells = <0>;
> > 	clocks = <&twi0_clk>;
> > +	clock-frequency = <400000>;
> > 
> The bindings is wrong it’s not the bus frequency but the max frequency
> 
> as you describe the bus not the device frequency. And this is this one that limit the bus

It is not wrong, it is since "the beginning" the way i2c bus speeds are
described. It is well known that, in fact, the devices should have a
speed limiting property, yet nobody has sent in patches so far.

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