Hi Roger, > Am 05.12.2018 um 16:27 schrieb Roger Quadros <rogerq@xxxxxx>: > > Nikolaus, > > On 05/12/18 17:21, H. Nikolaus Schaller wrote: >> Hi Roger, >> >>> Am 30.11.2018 um 15:36 schrieb Roger Quadros <rogerq@xxxxxx>: >>> >>> On 30/11/18 15:38, H. Nikolaus Schaller wrote: >>>> Hi Roger, >>>> >>>>> Am 30.11.2018 um 13:40 schrieb Roger Quadros <rogerq@xxxxxx>: >>>>> >>>>> Nikolaus, >>>>> >>>>> On 29/11/18 12:00, H. Nikolaus Schaller wrote: >>>>>> Hi, >>>>>> I finally got some USB3 OTG cable (said to be compatible with Samsung Galaxy Note 3). >>>>>> Unfortunately devices do not enumerate (don't show up in lsusb -t) and don't even >>>>>> fall back to USB2 speed. >>>>>> If I use a pure USB2 OTG cable all devices work in USB2 mode. >>>>>> >>>>>> This is all the same on OMAP5EVM and Pyra. >>>>>> >>>>>> Is this known or does USB3-OTG work for someone? >>>>> >>>>> I can give it a try. Do you have any patches to enable the VBUS regulator on omap5-uevm? >>>> >>>> I think everything is already upstream and I have not used a special patch for it. >>>> See extcon_usb3 and &usb in omap5-board-common.dtsi. This seems to connect the ID pin to the smps10. >>>> >>>> The dwc3 role patch is also upstream >>>> >>>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v4.20-rc4&id=656c1a65ab555ee5c7cd0d6aee8ab82ca3c1795f >>>> >>>> so that it should work out of the box for USB2 (or 3) with mainline kernel >>>> Unless I did miss something important I am not aware of. >>> >>> I think I found the problem. >>> >>> Can you please try with the below patch? Super-speed host works for me [1]. >>> >>> diff --git a/arch/arm/boot/dts/omap5-board-common.dtsi b/arch/arm/boot/dts/omap5-board-common.dtsi >>> index bf7ca00..bc853eb 100644 >>> --- a/arch/arm/boot/dts/omap5-board-common.dtsi >>> +++ b/arch/arm/boot/dts/omap5-board-common.dtsi >>> @@ -701,6 +701,7 @@ >>> }; >>> >>> &dwc3 { >>> + extcon = <&extcon_usb3>; >>> dr_mode = "otg"; >>> }; >>> >>> cheers, >>> -roger >>> >>> >>> [1] >>> >>> [ 115.105743] xhci-hcd xhci-hcd.2.auto: xHCI Host Controller >>> [ 115.111384] xhci-hcd xhci-hcd.2.auto: new USB bus registered, assigned bus number 3 >>> [ 115.120903] xhci-hcd xhci-hcd.2.auto: hcc params 0x0220f04c hci version 0x100 quirks 0x0000000002010010 >>> [ 115.130545] xhci-hcd xhci-hcd.2.auto: irq 166, io mem 0x4a030000 >>> [ 115.139082] usb usb3: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 4.20 >>> [ 115.147491] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1 >>> [ 115.154783] usb usb3: Product: xHCI Host Controller >>> [ 115.159757] usb usb3: Manufacturer: Linux 4.20.0-rc1-00048-gd8e2769-dirty xhci-hcd >>> [ 115.167401] usb usb3: SerialNumber: xhci-hcd.2.auto >>> [ 115.173794] hub 3-0:1.0: USB hub found >>> [ 115.177959] hub 3-0:1.0: 1 port detected >>> [ 115.183078] xhci-hcd xhci-hcd.2.auto: xHCI Host Controller >>> [ 115.188707] xhci-hcd xhci-hcd.2.auto: new USB bus registered, assigned bus number 4 >>> [ 115.196513] xhci-hcd xhci-hcd.2.auto: Host supports USB 3.0 SuperSpeed >>> [ 115.203304] omap-dwc3 4a020000.omap_dwc3: mailbox: VBUS valid >>> [ 115.209465] usb usb4: We don't know the algorithms for LPM for this host, disabling LPM. >>> [ 115.218228] usb usb4: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 4.20 >>> [ 115.226691] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1 >>> [ 115.234052] usb usb4: Product: xHCI Host Controller >>> [ 115.239118] usb usb4: Manufacturer: Linux 4.20.0-rc1-00048-gd8e2769-dirty xhci-hcd >>> [ 115.246871] usb usb4: SerialNumber: xhci-hcd.2.auto >>> [ 115.252711] hub 4-0:1.0: USB hub found >>> [ 115.256697] hub 4-0:1.0: 1 port detected >>> [ 115.626660] usb 4-1: new SuperSpeed Gen 1 USB device number 2 using xhci-hcd >>> [ 115.662809] usb 4-1: New USB device found, idVendor=8564, idProduct=1000, bcdDevice=11.00 >>> [ 115.671093] usb 4-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 >>> [ 115.678346] usb 4-1: Product: Mass Storage Device >>> [ 115.683082] usb 4-1: Manufacturer: JetFlash >>> [ 115.687362] usb 4-1: SerialNumber: 04NWK12LVFGUCOCZ >>> [ 115.696634] usb-storage 4-1:1.0: USB Mass Storage device detected >>> [ 115.703795] scsi host1: usb-storage 4-1:1.0 >>> [ 117.070850] scsi 1:0:0:0: Direct-Access JetFlash Transcend 32GB 1100 PQ: 0 ANSI: 6 >>> [ 117.082607] sd 1:0:0:0: [sda] 61702144 512-byte logical blocks: (31.6 GB/29.4 GiB) >>> [ 117.091254] sd 1:0:0:0: [sda] Write Protect is off >>> [ 117.097436] sd 1:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA >>> [ 117.113372] sda: sda1 sda2 sda3 >>> [ 117.121578] sd 1:0:0:0: [sda] Attached SCSI removable disk >>> >>> root@rockdesk:~# lsusb -t >>> /: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M >>> |__ Port 1: Dev 2, If 0, Class=stor., Driver=usb-storage, 5000M >> >> 5000M looks good! >> >>> /: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M >>> /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ohci-platform/3p, 12M >>> /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-omap/3p, 480M >>> |__ Port 2: Dev 2, If 0, Class=hub, Driver=hub/3p, 480M >>> |__ Port 3: Dev 3, If 0, Class=vend., Driver=smsc95xx, 480M >> >> I stil could not get more than on the Pyra (haven't tried on OMAP5EVM yet): >> >> [ 262.100006] bq24296_otg_enable(1) >> [ 262.182273] xhci-hcd xhci-hcd.2.auto: xHCI Host Controller >> [ 262.188886] xhci-hcd xhci-hcd.2.auto: new USB bus registered, assigned bus number 2 >> [ 262.198343] xhci-hcd xhci-hcd.2.auto: hcc params 0x0220f04c hci version 0x100 quirks 0x0000000002010010 >> [ 262.208389] xhci-hcd xhci-hcd.2.auto: irq 187, io mem 0x4a030000 >> [ 262.215165] bq24296_usb_detect: r8=c0 OTG r9=00 >> [ 262.220610] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 4.20 >> [ 262.229383] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 >> [ 262.237027] usb usb2: Product: xHCI Host Controller >> [ 262.242248] usb usb2: Manufacturer: Linux 4.20.0-rc5-letux+ xhci-hcd >> [ 262.248979] usb usb2: SerialNumber: xhci-hcd.2.auto >> [ 262.266002] hub 2-0:1.0: USB hub found >> [ 262.269957] hub 2-0:1.0: 1 port detected >> [ 262.286712] xhci-hcd xhci-hcd.2.auto: xHCI Host Controller >> [ 262.292760] xhci-hcd xhci-hcd.2.auto: new USB bus registered, assigned bus number 3 >> [ 262.300847] xhci-hcd xhci-hcd.2.auto: Host supports USB 3.0 SuperSpeed >> [ 262.307990] usb usb3: We don't know the algorithms for LPM for this host, disabling LPM. >> [ 262.316739] usb usb3: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 4.20 >> [ 262.325481] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1 >> [ 262.333134] usb usb3: Product: xHCI Host Controller >> [ 262.338335] usb usb3: Manufacturer: Linux 4.20.0-rc5-letux+ xhci-hcd >> [ 262.345206] usb usb3: SerialNumber: xhci-hcd.2.auto >> [ 262.362092] hub 3-0:1.0: USB hub found >> [ 262.366095] hub 3-0:1.0: 1 port detected >> [ 266.903658] usb usb3-port1: Cannot enable. Maybe the USB cable is bad? >> [ 271.222539] usb usb3-port1: Cannot enable. Maybe the USB cable is bad? >> >> At least the mesaage about the bad USB cable is new. So the patch has some effect. >> >> What I am missing is something like >> >> [ 115.203304] omap-dwc3 4a020000.omap_dwc3: mailbox: VBUS valid > > This was from my local debug patch so you won't see it. Ah, I see. Maybe I should add a similar debug command... >> >> Maybe this is just different on the Pyra. We do not use the SMPS10 but an >> external bq24297 with an out-of tree driver we have hacked together and >> it might have to send some mail. > > Were you able to get High-speed devices working on the xhci port? No, they simply don't appear in lsusb besides the above shown log (unless I use an USB2 only cable where devices fall back to 480M) So I think the USB PHY recognizes that there is a device and also that there is an USB3 cable - but can't establish communication. I have never seen something like: >>> [ 115.626660] usb 4-1: new SuperSpeed Gen 1 USB device number 2 using xhci-hcd Maybe the cable is really bad. I still have to do the test with the OMAP5EVM. BR, Nikolaus
