Results for SigmaStar SSD202D on SBC2D70 sbc

[fifteenhex]

| SBC2D70 (SSD202D) | 1700 MHz | 5.16 | Sid armhf | 1950 | 26240 | 33120 | 770 | 3190 | - | http://ix.io/3MZY |

[ThomasKaiser]

Hi Daniel,

curious: Willy's mhz utility and /sys/devices/system/cpu/cpufreq/policy0/scaling_available_frequencies show 1296 MHz while /sys/devices/system/cpu/cpufreq/policy0/cpuinfo_max_freq claims 1700 MHz. What's correct? :)

[fifteenhex]

mm not sure what is going on there.
In the opp table there is up to 1296MHz as normal modes and then some 100MHz bumps after that as turbos.
The spec'd frequency for the chip is 1200MHz but it runs fine at 1800MHz as long as the voltage is high enough.
This board crashed at 1800MHz so I took it down to 1700MHz.

mhz seems to be showing the right values when I run it manually.

root@sbc2d70:~# /usr/local/src/mhz/mhz 
count=807053 us50=24254 us250=119279 diff=95025 cpu_MHz=1698.612

Willy actually fixed the clock driver to make the frequency match mhz. ;)

[ThomasKaiser]

Can you please provide output of grep . /sys/devices/system/cpu/cpufreq/policy0/*?

[fifteenhex]

root@sbc2d70:~# grep . /sys/devices/system/cpu/cpufreq/policy0/*
/sys/devices/system/cpu/cpufreq/policy0/affected_cpus:0 1
/sys/devices/system/cpu/cpufreq/policy0/cpuinfo_cur_freq:599999
/sys/devices/system/cpu/cpufreq/policy0/cpuinfo_max_freq:1700000
/sys/devices/system/cpu/cpufreq/policy0/cpuinfo_min_freq:240000
/sys/devices/system/cpu/cpufreq/policy0/cpuinfo_transition_latency:305000
/sys/devices/system/cpu/cpufreq/policy0/related_cpus:0 1
/sys/devices/system/cpu/cpufreq/policy0/scaling_available_frequencies:240000 400000 600000 800000 1008000 1080000 1188000 1296000 
/sys/devices/system/cpu/cpufreq/policy0/scaling_available_governors:ondemand performance 
/sys/devices/system/cpu/cpufreq/policy0/scaling_boost_frequencies:1350000 1404000 1458000 1512000 1600000 1700000 
/sys/devices/system/cpu/cpufreq/policy0/scaling_cur_freq:599999
/sys/devices/system/cpu/cpufreq/policy0/scaling_driver:cpufreq-dt
/sys/devices/system/cpu/cpufreq/policy0/scaling_governor:ondemand
/sys/devices/system/cpu/cpufreq/policy0/scaling_max_freq:1700000
/sys/devices/system/cpu/cpufreq/policy0/scaling_min_freq:240000
/sys/devices/system/cpu/cpufreq/policy0/scaling_setspeed:<unsupported>
root@sbc2d70:~# 

[ThomasKaiser]

Alright, handling of scaling_boost_frequencies is entirely missing. I'm going to prepare a v0.9.2 soon but right now enjoying the good weather for the next hours...

Ah, which .dts are you currently using (just to to check OPP nodes there and get a better understanding of what I'm doing)?

[fifteenhex]

.dts is on the top of this .dtsi with the opp stuff: https://github.com/linux-chenxing/linux/blob/mstar_v5_17_rebase/arch/arm/boot/dts/mstar-infinity2m.dtsi

Currently running with the 1800MHz frequency commented out.

[ThomasKaiser]

Could you give v0.9.2 a try please?

Would be great if you could also test a quick sbc-bench -m on bigboy too with the new version since I hope I got identifying CN8890 right (cluster/NUMA detection still broken though).

[fifteenhex]

Running now..

[fifteenhex]

| SBC2D70 (SSD202D) | 1700 MHz | 5.16 | Sid armhf | 1960 | 26240 | 33120 | 770 | 3190 | - | http://ix.io/3N1U |