Re: [PATCH net-next v2 2/2] net: ethtool: Add support for writing firmware blocks using EPL payload

[Andrew Lunn]

> Hi Andrew,
> 
> In both cases we transfer the same size of data, which corresponds to the size of the firmware image, to the module.
> Moreover, in both cases the same size of data is passing on the wire, which depends on the wire obligations.
> 
> But, instead of running #n "0103h: Write FW Block LPL" commands (see section 9.7.4 in CMIS 5.2) with up to 128 bytes, we are running #n/16 "0104h: Write FW Block EPL" commands (see section 9.7.5 in CMIS 5.2) with up to 2048 bytes.
> That means that instead of processing #n commands and sending back to the core the status for each one, we do it for only #n/16.

O.K, thanks.

> The standard does not say anything about the I2C layer, but the
> speedup doesn’t lie in that.

What does your hardware do? Can it do 2048 byte I2C bus transfers? Or
is it getting chopped up into smaller chunks?

Thanks
	Andrew