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SubjectRe: [PATCH] clk: create write_enable file to control clk rate write and other dangerous ops permission
Hi Stephen,
---- On Thu, 12 Jan 2023 02:37:29 +0800 Stephen Boyd wrote ---
> Quoting Li Chen (2023-01-10 03:45:39)
> > From: Li Chen lchen@ambarella.com>
> >
> > It's common requirement for bsp debug/test to change clk rate from userspace.
> >
> > Currently, we must define CLKOCK_ALLOW_WRITE_DEBUGFS then re-compile kernel
> > to allow this feature. Let's replace it with a "write_enable" file to
> > allow enable it at runtime.
>
> Nak. This design is intentional.

Thanks for your reply. Got it. But sometimes re-compile is somewhat low efficient. Is it acceptable to provide
a write_enable to clk_core(not enable by default), and allow clk driver to enable it inside clk_ops->init
via clk_hw->core->write_enable = 1?

Regards,
Li

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