Messages in this thread | | | Subject | Re: [RFC 1/1] ARM: print MHz in /proc/cpuinfo | From | Sudeep Holla <> | Date | Wed, 8 Jun 2016 09:34:06 +0100 |
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On 07/06/16 22:08, Jon Mason wrote: > Query the CPU core clock in the device tree to determine the core clock > speed.
How do guarantee that it's the current frequency of the CPU ? It doesn't even represent the mix or max frequency, so it's incorrect. Some DTs have boot frequency in that entry.
> Output this clock rate in /proc/cpuinfo to match the output > from other architectures. The output is intentionally patterned after > the x86 output, to match existing (and possibly expected) convention. > > If any errors are encountered in querying the clock (or the speed is > erroneously zero), nothing will be printed out. Thus any existing > devices that do not have CPU clocks defined in the device tree will > work as before. >
What if they just don't have in DT but have DVFS support ?
Also whey do we need this support when the user-space can query the CPUFreq sysfs which is more accurate and maintains the current running frequency ?
-- Regards, Sudeep
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