> -----Original Message----- > From: arm_ml@xxxxxxxxxxx [mailto:arm_ml@xxxxxxxxxxx] > Sent: Friday, August 24, 2018 1:39 PM > To: Vince Geze <vincegeze@xxxxxxxxx> > Cc: arm@xxxxxxxxxxxxxxxxxxxxxxx > Subject: Re: [fedora-arm] Re: F28 on odroid XU4 > > Am 2018-08-24 12:09, schrieb Vince Geze: > --snip-- > > > > Well, after countless reboots it seems to be even more simple. > > - USB3: preloading xhci-plat-hcd, which already is in the initramfs, > > is sufficient to get proper USB3 operation and the r8152 at full speed > > as well > > - CPU HMP: this one I already knew was linked to the > > CONFIG_BL_SWITCHER. On [1] it is mentioned there are both sysfs and > > kernel boot options to control this behavior. The sysfs path exists > > and with lscpu you can see all 8 cores being put online. The kernel > > boot command however turned out to be incorrect, but after some > > digging I found you only need "no_bL_switcher" as boot option. > > > > Since the board will be used headless, I also enabled the blinking led > > by preloading ledtrig-heartbeat, but this needs to be included in a > > /etc/dracut.conf.d/ conf file with 'add_drivers+=" ledtrig-heartbeat > > "'. The blinking frequency also gives an indication of the load. > > > > The final boot line now looks like this: > > append ro rd.driver.pre=ledtrig-heartbeat,xhci-plat-hcd > > root=UUID=your_UUID cpuidle.off=1 no_bL_switcher console=tty1 > > console=ttySAC2,115200n8 > > > > Result: > > - systematically correct detection of USB3 > > - performance improvement by enabling all cpus > > - indication whether the system is alive or not > > - no need for recompiling kernels, only boot time options and an > > optional dracut inclusion > > > > Best regards, > > > > Vince > > > > [1] > > https://wiki.linaro.org/projects/big.LITTLE.MP/Big.Little.Switcher/Doc > > s/porting-guide > _______________________________________________ > > arm mailing list -- arm@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an > > email to arm-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: > > https://getfedora.org/code-of-conduct.html > > List Guidelines: > > https://fedoraproject.org/wiki/Mailing_list_guidelines > > List Archives: > > https://lists.fedoraproject.org/archives/list/arm@lists.fedoraproject. > > org/message/Y7EMT5B5HYSV3SX533YZZHOOEOMRHNFZ/ > > Hello Vince, > > I must say thank you ! > > With your work I can enable all 8 CPUs on my Odroid HC1. > > lscpu before: > [root@odroidh1 ~]# lscpu > Architektur: armv7l > Byte-Reihenfolge: Little Endian > CPU(s): 8 > Liste der Online-CPU(s): 0-3 > Liste der Offline-CPU(s): 4-7 > Thread(s) pro Kern: 1 > Kern(e) pro Socket: 4 > Sockel: 1 > > lscpu after: > Architektur: armv7l > Byte-Reihenfolge: Little Endian > CPU(s): 8 > Liste der Online-CPU(s): 0-7 > Thread(s) pro Kern: 1 > Kern(e) pro Socket: 4 > Sockel: 2 > > Greetings > Andreas Hi Andreas, Glad to hear it's working on your side as well. Could you also check the number at the end of the r8152 line in lsusb -t with the default boot line without preloads? Is it 480M or 5000M? Best regards, Vince _______________________________________________ arm mailing list -- arm@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to arm-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/arm@xxxxxxxxxxxxxxxxxxxxxxx/message/PBWN5YWQDTURFYSWXMSRQUH4NFCGOQU4/
