Hello everyone,
I'm trying out a SoC with a brand new USB controller, which is (supposedly)
a standard XHCI controller. In theory, I would just need to build the right
driver, and everything would auto-magically work, right?
So my defconfig contains:
CONFIG_USB=y
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
CONFIG_USB_XHCI_HCD=y
CONFIG_USB_XHCI_PLATFORM=y
CONFIG_USB_STORAGE=y
CONFIG_USB_STORAGE_DEBUG=y
And my device tree contains:
usb3@30040000 {
compatible = "generic-xhci";
reg = <0x30040000 0x10000>;
interrupts = <SIGMA_HWIRQ 67 IRQ_TYPE_LEVEL_HIGH>;
};
The boot messages I get:
[ 1.618214] xhci-hcd 30040000.usb3: xHCI Host Controller
[ 1.623611] xhci-hcd 30040000.usb3: new USB bus registered, assigned bus number 1
[ 1.631181] reset function is xhci_plat_setup
[ 1.635588] xhci_plat_setup from usb_add_hcd
[ 1.640109] xhci-hcd 30040000.usb3: hcc params 0x30003192 hci version 0x100 quirks 0x00010010
[ 1.648766] xhci-hcd 30040000.usb3: irq 22, io mem 0x30040000
[ 1.654572] xhci_plat_start from usb_add_hcd
[ 1.659086] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 1.665943] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.673228] usb usb1: Product: xHCI Host Controller
[ 1.678154] usb usb1: Manufacturer: Linux 4.7.0-rc6 xhci-hcd
[ 1.683865] usb usb1: SerialNumber: 30040000.usb3
[ 1.689391] hub 1-0:1.0: USB hub found
[ 1.693227] hub 1-0:1.0: 1 port detected
[ 1.697601] xhci-hcd 30040000.usb3: xHCI Host Controller
[ 1.702983] xhci-hcd 30040000.usb3: new USB bus registered, assigned bus number 2
[ 1.710545] reset function is xhci_plat_setup
[ 1.714950] xhci_plat_setup from usb_add_hcd
[ 1.719265] xhci_plat_start from usb_add_hcd
[ 1.723653] usb usb2: We don't know the algorithms for LPM for this host, disabling LPM.
[ 1.731956] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003
[ 1.738814] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.746100] usb usb2: Product: xHCI Host Controller
[ 1.751025] usb usb2: Manufacturer: Linux 4.7.0-rc6 xhci-hcd
[ 1.756736] usb usb2: SerialNumber: 30040000.usb3
[ 1.762195] hub 2-0:1.0: USB hub found
[ 1.766027] hub 2-0:1.0: 1 port detected
[ 1.770661] usbcore: registered new interface driver usb-storage
[ 1.784584] usbcore: registered new interface driver usbhid
[ 1.790213] usbhid: USB HID core driver
Which looks encouraging, right?
Am I supposed to have had USB interrupts at that point?
# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
20: 609 365 393 356 GIC-0 29 Edge twd
21: 101 0 0 0 INTC 1 Level serial
22: 0 0 0 0 INTC 67 Level xhci-hcd:usb1
IPI0: 0 0 0 0 CPU wakeup interrupts
IPI1: 0 0 0 0 Timer broadcast interrupts
IPI2: 794 620 1223 1045 Rescheduling interrupts
IPI3: 0 37 37 37 Function call interrupts
IPI4: 0 0 0 0 CPU stop interrupts
IPI5: 0 0 0 0 IRQ work interrupts
IPI6: 0 0 0 0 completion interrupts
Err: 0
When I insert a USB key, nothing happens :-(
# lsusb -v
Bus 001 Device 001: ID 1d6b:0002
Bus 002 Device 001: ID 1d6b:0003
I'd like to hear suggestions about what I can tweak to fix the problem.
Regards.
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