[fedora-arm] Re: F28 on odroid XU4

> -----Original Message-----
> From: arm_ml@rirasoft.de [mailto:arm_ml@rirasoft.de]
> Sent: Friday, August 24, 2018 2:27 PM
> To: Vince Geze <vincegeze@gmail.com>
> Cc: arm@lists.fedoraproject.org
> Subject: Re: [fedora-arm] Re: F28 on odroid XU4
>
> Am 2018-08-24 14:17, schrieb Vince Geze:
> >> -----Original Message-----
> >> From: arm_ml@rirasoft.de [mailto:arm_ml@rirasoft.de]
> >> Sent: Friday, August 24, 2018 1:39 PM
> >> To: Vince Geze <vincegeze@gmail.com>
> >> Cc: arm@lists.fedoraproject.org
> >> 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
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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
>
> System without your modifikation:
>
> [root@odroidh1 ~]# lsusb -t
> /: Bus 06.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
> /: Bus 05.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
> |__ Port 1: Dev 2, If 0, Class=Vendor Specific Class, Driver=r8152,
480M
> /: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
> |__ Port 1: Dev 2, If 0, Class=Mass Storage, Driver=uas, 5000M
> /: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
> /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=exynos-ehci/3p, 480M
> /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=exynos-ohci/3p, 12M
> [root@odroidh1 ~]#
>
> System with your modifikation:
>
> [root@odroidh2 ~]# lsusb -t
> /: Bus 06.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
> /: Bus 05.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
> |__ Port 1: Dev 2, If 0, Class=Vendor Specific Class, Driver=r8152,
480M
> /: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
> |__ Port 1: Dev 2, If 0, Class=Mass Storage, Driver=uas, 5000M
> /: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
> /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=exynos-ehci/3p, 480M
> /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=exynos-ohci/3p, 12M
> [root@odroidh2 ~]#
>
> Systems are identical: Odroid HC1 with update Fedora 28
>
> Andreas

Hi Andreas,

Looks like the storage is working at USB3 speed, but the Ethernet at USB2.
Have you included the xhci preload at the modified boot line?

Best regards,

Vince
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