Messages in this thread | | | Date | Wed, 27 Sep 2017 19:51:30 +0800 | From | icenowy@aosc ... | Subject | Re: [PATCH 0/3] Simple DVFS support for Allwinner A64 SoC |
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在 2017-09-25 18:27,Maxime Ripard 写道: > On Mon, Sep 25, 2017 at 10:12:09AM +0000, Icenowy Zheng wrote: >> 于 2017年9月25日 GMT+08:00 下午6:10:27, Maxime Ripard >> <maxime.ripard@free-electrons.com> 写到: >> >Hi, >> > >> >On Sat, Sep 23, 2017 at 12:15:28AM +0000, Icenowy Zheng wrote: >> >> This patchset imports simple DVFS support for Allwinner A64 SoC. >> >> >> >> As the thermal sensor driver is not yet implemented and some boards >> >> have still no AXP PMIC support, now only two OPPs are present -- >> >> 648MHz@1.04V and 816MHz@1.1V to prevent overheat or undervoltage. >> >> >> >> PATCH 1 is a fix to the CCU driver of A64, and the remaining patches >> >> set up the device tree bits of the DVFS on Pine64. >> > >> >How has this been tested? >> > >> >What tasks did you run, with what governor, etc... >> >> I only tested manual frequency switching between 648MHz and >> 816MHz, and tested the PLL stuck issue by change the OPPs to >> some random value. > > Ideally, we should test that it's actually reliable. Poorly chosen > OPPs might lead to corrupt data that you might not get before a while. > > Please test using: > https://linux-sunxi.org/Hardware_Reliability_Tests#Reliability_of_cpufreq_voltage.2Ffrequency_settings > > And post the report.
``` root@p64 [ cpuburn-arm@master ] # ./cpuburn-a53 & [1] 2543 root@p64 [ cpuburn-arm@master ] # ./cpufreq-ljt-stress-test Creating './whitenoise-1920x1080.jpg' ... done CPU stress test, which is doing JPEG decoding by libjpeg-turbo at different cpufreq operating points.
Testing CPU 0 816 MHz ............................................................ OK 648 MHz ............................................................ OK
Testing CPU 1 816 MHz ............................................................ OK 648 MHz ............................................................ OK
Testing CPU 2 816 MHz ............................................................ OK 648 MHz ............................................................ OK
Testing CPU 3 816 MHz ............................................................ OK 648 MHz ............................................................ OK
Overall result : PASSED ```
> > Maxime
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