problems with odroid c2 support with kernel 4.10 from master

Michał Zegan webczat_200 at
Thu Dec 29 04:29:49 PST 2016

Okay, the issue with scpi was that I did not load mailbox.
About issues with usb, I was investigating them a little on the irc
channel yesterday, I know the problem I've reported is not necessarily
odroid c2 specific and there are more usb problems, that have been
recognized already and are on the todo list.

W dniu 29.12.2016 o 10:05, Neil Armstrong pisze:
> On 12/28/2016 04:06 AM, Michał Zegan wrote:
>> Hello.
>> I have kernel 4.10 from master, with most thing compiled as modules
>> (personal preference), running on odroid c2.
>> I am now in a basic/test initramfs with a shell and modules at hand,
>> trying to load them.
>> There seem to be few problems there with usb.
>> Fixed regulator is now loaded. I load the phy-meson8b-usb2 first, then dwc2.
>> I get so: note the errors at the beginning. usb0 does not start, usb1
>> does start.
>> c9000000.usb supply vusb_d not found, using dummy regulator
>> c9000000.usb supply vusb_a not found, using dummy regulator
>> phy phy-c0000000.phy.0: USB ID detect failed!
>> phy phy-c0000000.phy.0: phy poweron failed --> -22
>> dwc2: probe of c9000000.usb failed with error -22
>> c9100000.usb supply vusb_d not found, using dummy regulator
>> c9100000.usb supply vusb_a not found, using dummy regulator
>> dwc2 c9100000.usb: DWC OTG Controller
>> dwc2 c9100000.usb: new USB bus registered, assigned bus number 1
>> dwc2 c9100000.usb: irq 20, io mem 0x00000000
>> usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
>> usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
>> usb usb1: Product: DWC OTG Controller
>> usb usb1: Manufacturer: Linux 4.10.0-rc1 dwc2_hsotg
>> usb usb1: SerialNumber: c9100000.usb
>> hub 1-0:1.0: USB hub found
>> hub 1-0:1.0: 1 port detected
>> Also another thing: trying to load arm-scpi and things like cpufreq or
>> hwmon modules for scpi, it seems scpi is not detected, not sure what is
>> missing?
> Is all this working using the default arm64 defconfig ?
> Neil
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> linux-amlogic at

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