Messages in this thread | ![/](/images/icornerl.gif) | | Date | Thu, 12 Jan 2023 11:05:34 +0800 | From | Li Chen <> | Subject | Re: [PATCH] clk: create write_enable file to control clk rate write and other dangerous ops permission |
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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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