[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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>>
>> 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
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