On Fri, Jun 4, 2021 at 5:31 AM Steven Lee [off-list ref] wrote:

However, it might affect users who update kernel/driver from the
old kernel/driver as they may expect the gpio output pin base is start
from 80(MAX_NR_HW_SGPIO).

Why? What users? In-kernel, out-of-tree-kernel or userspace users?

In-kernel users can be fixed, out-of-tree kernels we don't care about
and userspace should be using the character device.

Just change it.

Yours,
Linus Walleij