Hi All, -----Original Message----- From: Robin Murphy [mailto:robin.murphy@xxxxxxx] Sent: Tuesday, September 27, 2016 9:53 PM To: Hanjun Guo <hanjun.guo@xxxxxxxxxx>; Sudeep Holla <sudeep.holla@xxxxxxx>; Sajjan, Vikas C <vikas.cha.sajjan@xxxxxxx>; Vikas Sajjan <sajjan.linux@xxxxxxxxx>; linux-usb@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; linux-acpi@xxxxxxxxxxxxxxx Cc: mark.rutland@xxxxxxx; lorenzo.pieralisi@xxxxxxx Subject: Re: ARM juno R2 board USB Issue (EHCI probe failed) On 27/09/16 17:13, Hanjun Guo wrote: > On 09/27/2016 05:07 PM, Sudeep Holla wrote: >> >> >> On 27/09/16 09:55, Sajjan, Vikas C wrote: >>> Hi Sudeep, >>> >>> -----Original Message----- >>> From: Sudeep Holla [mailto:sudeep.holla@xxxxxxx] >>> Sent: Tuesday, September 27, 2016 2:21 PM >>> To: Vikas Sajjan <sajjan.linux@xxxxxxxxx>; >>> linux-usb@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; >>> linux-acpi@xxxxxxxxxxxxxxx >>> Cc: Sudeep Holla <sudeep.holla@xxxxxxx>; mark.rutland@xxxxxxx; >>> lorenzo.pieralisi@xxxxxxx; Sajjan, Vikas C >>> <vikas.cha.sajjan@xxxxxxx> >>> Subject: Re: ARM juno R2 board USB Issue (EHCI probe failed) >>> >>> Hi Vikas, >>> >>> On 27/09/16 09:14, Vikas Sajjan wrote: >>>> Adding USB mailing list. >>>> >>>> >>>> On Tue, Sep 27, 2016 at 12:33 PM, Sajjan, Vikas C >>>> <vikas.cha.sajjan@xxxxxxx> wrote: >>>>> Hi All, >>>>> >>>>> I working on ARM juno R2 board, with latest kernel 4.8.rc7 and I >>>>> get below USB EHCI probe error while booting with acpi=force. >>>>> >>> >>> Are you using the latest UEFI EDK2 ? >>> No, I am still using the UEFI binary which came as part of the Juno >>> board. >>> >>> >>>>> [ 1.223662] VFIO - User Level meta-driver version: 0.3 >>>>> [ 1.229335] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) >>>>> Driver >>>>> [ 1.235882] ehci-pci: EHCI PCI platform driver >>>>> [ 1.240359] ehci-platform: EHCI generic platform driver >>>>> [ 1.245619] ehci-platform ARMH0D20:00: Error: DMA mask >>>>> configuration failed >>>>> [ 1.272491] ehci-platform: probe of ARMH0D20:00 failed with >>>>> error -5 >>>>> [ 1.278876] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver >>>>> [ 1.285071] ohci-pci: OHCI PCI platform driver >>>>> [ 1.289548] ohci-platform: OHCI generic platform driver >>>>> [ 1.294884] usbcore: registered new interface driver usb-storage >>>>> [ 1.301231] mousedev: PS/2 mouse device common for all mice >>>>> [ 1.307197] rtc-efi rtc-efi: rtc core: registered rtc-efi as rtc0 >>>>> >>>>> But this error goes off, if I don't force ACPI booting, i.e., if I >>>>> remove acpi=force from kernel command line , USB is detected and >>>>> my RFS which is in the usb drive, gets mounted successfully. >>>>> >>> >>> As I mentioned in private, I do get the same error if I drop _CCA in >>> USB object of ACPI DSDT. Can you give it a spin with latest UEFI ? >>> >>> Sure, will try with latest UEFI. >>> >> >> I bet that's 8-12 months old. It puts the banner during boot with the >> build date. You can try to follow [1] or access it from [2] > > Agree. > > D03 is using the same IP (EHCI) and the USB works fine with _CCA in > the device node. _CCA is mandatory on arm64 (see CONFIG_ACPI_CCA_REQUIRED). Any devices without it are going to end up with the dummy DMA ops which intentionally fail if a driver tries to use them - i.e. the error seen above is by design. Thank you for the clarification. Thanks and Regards Vikas Sajjan Robin. > > Thanks > Hanjun > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
