Re: F28 on odroid XU4

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Am 24.08.2018 um 15:15 schrieb Vince Geze:

-----Original Message-----
From: arm_ml@xxxxxxxxxxx [mailto:arm_ml@xxxxxxxxxxx]
Sent: Friday, August 24, 2018 2:45 PM
To: Vince Geze <vincegeze@xxxxxxxxx>
Cc: arm@xxxxxxxxxxxxxxxxxxxxxxx
Subject: Re: [fedora-arm] Re: F28 on odroid XU4

Am 2018-08-24 14:37, schrieb Vince Geze:
-----Original Message-----
From: arm_ml@xxxxxxxxxxx [mailto:arm_ml@xxxxxxxxxxx]
Sent: Friday, August 24, 2018 2:27 PM
To: Vince Geze <vincegeze@xxxxxxxxx>
Cc: arm@xxxxxxxxxxxxxxxxxxxxxxx
Subject: Re: [fedora-arm] Re: F28 on odroid XU4

Am 2018-08-24 14:17, schrieb Vince Geze:
-----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.Switch
er/
Doc
s/porting-guide
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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
Yes of course:
[root@odroidh2 ~]# cat /boot/extlinux/extlinux.conf # extlinux.conf
generated by appliance-creator ui menu.c32 menu autoboot Welcome to
Fedora-Minimal-armhfp-28-1.1. Automatic boot in # second{,s}. Press a key
for options.
menu title Fedora-Minimal-armhfp-28-1.1 Boot Options.
menu hidden
timeout 20
totaltimeout 600

default=Fedora (4.17.14-202.fc28.armv7hl) 28 (Twenty Eight) label Fedora
(4.17.14-202.fc28.armv7hl) 28 (Twenty Eight)
          kernel /vmlinuz-4.17.14-202.fc28.armv7hl
          append ro rd.driver.pre=ledtrig-heartbeat,xhci-plat-hcd
root=UUID=cf0c90a1-25e4-429b-a77e-b9b4f3802258 cpuidle.off=1
LANG=de_DE.UTF-8 no_bL_switcher console=tty1 console=ttySAC2,1152
00n8
          fdtdir /dtb-4.17.14-202.fc28.armv7hl/
          initrd /initramfs-4.17.14-202.fc28.armv7hl.img

[root@odroidh2 ~]#

I've edit this line with the older kernel before I updated the system this
kernel.

Andreas
Hi Andreas,

Have you removed power completely between reboots, meaning physically unplug
power at board side for 5-10 seconds such that all leds are dimmed? I have
the impression not every component is fully or correctly reset if you just
do an init 6. It would be quite interesting to know if that could be the
issue with the r8152 driver, since, except for the heartbeat, adding those
options to the original 4.16 kernel of the F28 image without any dracut
initramfs regeneration was sufficient on my device.

Best regards,

Vince


Hello Vince,
after newest kernel update and poweroff for 1 minute:

[root@odroidh2 ~]# lsusb -t
/:  Bus 06.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
    |__ Port 1: Dev 2, If 0, Class=Vendor Specific Class, Driver=r8152, 5000M
/:  Bus 05.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 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 ~]# uname -a
Linux odroidh2.reschke.lan 4.17.17-200.fc28.armv7hl #1 SMP Mon Aug 20 17:31:32 UTC 2018 armv7l armv7l armv7l GNU/Linux
[root@odroidh2 ~]#

Greetings
Andreas
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