Re: [PATCH -next 4/4] spi: mockup: Add documentation

[Mark Brown]

On Fri, Aug 26, 2022 at 02:43:41PM +0000, Wei Yongjun wrote:

> +The typical use-case is like this:
> +        1. load this module
> +        2. use bpftool to load BPF program
> +        3. load the target chip driver module

This needs to go into a bit more detail on how one is expected to
obtain a copy of bpftool I think (or point to some good
documentation, I can't seem to find any in tree right now),
things may have changed since the last time I looked into this
but in the past the userspace tooling for BPF had some extremely
ambitious build dependencies which would be a fairly substantial
barrier to entry.

> +Compile your copy of the kernel source. Make sure to configure the spi-mockup
> +and the target chip driver as a module. Prepare a dts described the spi-mockup
> +device.

As I said in another mail the DT part of this appears to be
inappropriate, the driver should just allow the creation of
virtual devices.

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