On Montag, 29. Juli 2019 11:07:35 CEST Brian Masney wrote: > On Sat, Jul 27, 2019 at 12:58:54PM +0530, Amit Kucheria wrote: > > On Fri, Jul 26, 2019 at 4:59 PM Brian Masney <masneyb@xxxxxxxxxxxxx> wrote: > > > On Fri, Jul 26, 2019 at 04:40:16PM +0530, Amit Kucheria wrote: > > > > How well does cpufreq work on 8974? I haven't looked at it yet but > > > > we'll need it for thermal throttling. > > > > > > I'm not sure how to tell if the frequency is dynamically changed during > > > runtime on arm. x86-64 shows this information in /proc/cpuinfo. Here's > > > > > the /proc/cpuinfo on the Nexus 5: > > Nah. /proc/cpuinfo won't show what we need. > > > > Try the following: > > > > $ grep "" /sys/devices/system/cpu/cpufreq/policy?/* > > > > More specifically, the following files have the information you need. > > Run watch -n1 on them. > > > > $ grep "" /sys/devices/system/cpu/cpufreq/policy?/scaling_*_freq > > There's no cpufreq directory on msm8974: > > # ls -1 /sys/devices/system/cpu/ > cpu0 > cpu1 > cpu2 > cpu3 > cpuidle > hotplug > isolated > kernel_max > modalias > offline > online > possible > power > present > smt > uevent > > I'm using qcom_defconfig. > > Brian Hi Brian, cpufreq isn't supported on msm8974 yet. I have these patches [0] in my tree but I'm not sure they work correctly, but I haven't tested much with them. Feel free to try them on hammerhead. Luca [0] https://github.com/z3ntu/linux/compare/b0917f53ada0e929896a094b451219cd8091366e...6459ca6aff498c9d12acd35709b4903effc4c3f8
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