Messages in this thread | | | Subject | Re: [PATCH] clk: create write_enable file to control clk rate write and other dangerous ops permission | From | Stephen Boyd <> | Date | Thu, 12 Jan 2023 11:18:11 -0800 |
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Quoting Li Chen (2023-01-11 19:05:34) > 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? >
No
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