[RFC 1/9] regmap: Add USB support

[Mark Brown]

On Mon, Feb 17, 2020 at 10:33:58PM +0100, Noralf Trønnes wrote:
> Den 17.02.2020 13.11, skrev Mark Brown:

> > This looks like you just don't support a straight write operation, if
> > you need to do this emulation push it up the stack.

> After going through the stack I realise that I have a problem.
> What I have failed to fully comprehend is this regmap requirement:

> 	if (val_len % map->format.val_bytes)
> 		return -EINVAL;

> There will be a spi and i2c driver down the line which will transfer
> buffers of any size, and having to use 8-bit register values will not be
> great.

Out of interest why are 8 bit registers going to be a problem?
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