On 6/28/21 2:10 AM, Shane Synan wrote: > On 6/27/21 6:10 PM, Ansuel Smith wrote: >> It's good but consider that also the dts changes are required and also there >> is a pending pr that has to be merged or ipq8065 device will run at lower >> speed. >> The new cpufreq have changed the node definition >> This is the pr I'm talking about. >> https://github.com/openwrt/openwrt/pull/4192 >> >> So in short this backport lacks the dts changes and the pr4192 is mandatory >> or >> we will introduce perf regression in 21 >> > > Thank you for pointing out the details of the DTS changes and CPU > performance. Originally I was trying to achieve the smallest > backport, but in hindsight, it makes far more sense to avoid > frankensteining with partial changes. I appreciate your patience and > advice! > > Meanwhile, until PR #4192 can be reviewed/merged to master (so there's > commits to actually backport), I've thrown together a rough draft of > what changes would need backported:
Now that https://github.com/openwrt/openwrt/pull/4192 is merged, including four successful tests on Linux kernel v5.4, I've tried backporting all the CPU frequency/DTS/etc changes that appeared relevant, as shown here: https://github.com/openwrt/openwrt/compare/openwrt-21.02...digitalcircuit:openwrt-21.02-cpufreq-dtsivolt-cache (some commits were modified to drop kernel v5.10 patches) Unfortunately, my initial attempt is unstable again. I've gotten 3 reboots so far within a few hours of SFTP testing. Unlike before, nothing displays on the router's soldered-on serial console headers. Given these commits work just fine on the "master" branch, and on "21.02" it worked to change the CPU governor *without* the DTSI backports and cache (i.e. only the first commit), I strongly suspect I goofed up and missed backporting something important. Ansuel, do you have any suggestions on what else I should look for or try tinkering with? Meanwhile, just to see what happens in an attempt to narrow things down, I'm testing a build without the DTSI backports (all commits linked above except for "ipq806x: refresh dtsi patches" and "ipq806x: apply correct voltage tolerance"). So far, it boots, though I haven't run a full test. Regardless, it's not a proper solution, just a troubleshooting attempt. _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
