Re: [PATCH net-next] ptp: add debugfs support for IDT family of timing devices

[Andrew Lunn]

On Fri, Jul 10, 2020 at 11:41:25AM -0400, min.li.xe@xxxxxxxxxxx wrote:
> From: Min Li <min.li.xe@xxxxxxxxxxx>
> 
> This patch is to add debugfs support for ptp_clockmatrix and ptp_idt82p33.
> It will create a debugfs directory called idtptp{x} and x is the ptp index.
> Three inerfaces are present, which are cmd, help and regs. help is read
> only and will display a brief help message. regs is read only amd will show
> all register values.

You can get register dumps for free in debugfs if you use regmap. And
i2c devices are well supported by regmap.

    Andrew