Hi to All, Some time after making USB OTG to work in 'host' mode I have observed that from time to time the port stops working. I use it to connect STM-H405 board powered from USB OTG with ChibiOS based FW and USB CDC. Everything works fine but very rarely without identified reason USB OTG get disconnected.
After such disconnection only Linux reboot makes it to start working again. This behavior is observer at all Linux kernel versions till last used 4.6.3. Can somebody help me to idevtify and / or solve the problem? Best regards Chris On Wednesday, May 4, 2016 at 5:24:32 PM UTC+3, Christo Radev wrote: > > Hi to All, > > Following Michal Suchanek's post and applying Maxime Ripard's advice > <https://groups.google.com/d/msg/linux-sunxi/uulK5lf7XrU/WPFYKVpSAQAJ> > USB OTG started working in host only mode. > > Unfortunately, it solves the problem in a half so any ideas are welcome. > > Best regards > Chris > > On Wednesday, May 4, 2016 at 1:48:40 PM UTC+3, CodeKipper wrote: >> >> On 4 May 2016 at 11:44, Christo Radev <[email protected]> wrote: >> > Hi to All, >> > >> > >> > I am trying to use USB OTG on A20-Olinuxino-Lime2-eMMC with own build >> of >> > Armbian 5.11, U-Boot 2016.05--rec1, mainline kernel 4.5.2 and Debian >> Jessie >> > without success. I have tested: >> >> I don't think Wens changes for OTG is in 4.5.2. >> The following should be in arch/arm/configs/sunxi_defconfig >> >> CONFIG_USB_MUSB_HDRC=y >> CONFIG_USB_MUSB_SUNXI=y >> CONFIG_NOP_USB_XCEIV=y >> CONFIG_USB_GADGET=y >> >> They're in linux-next, >> >> CK >> >> > >> > both 'host' and 'otg' types for dr_mode in device tree; >> > connect USB OTG to other board's USB Host; >> > attach USB mass storage and other devices; >> > attach other self powered devices; >> > try to load modules like extcon_gpio, extcon_usb_gpio, u_serial, >> u_ether; >> > rebuild kernel with CONFIG_USB_GPIO_VBUS=y and many others without any >> > success. >> > >> > I have verified the HW is working fine as 'host' and 'device' with >> latest >> > Olimex image with Debian Jessie and kermel 3.4.103. >> > >> > Some time ago I have also tested it to work with Armbian 5.07 and >> kernel >> > 3.4.111 (with modified fex file). >> > >> > I have also verify that device tree seams to be o.k. according to posts >> in >> > this forum. >> > >> > >> > In the boot messages USB OTG is recognized by sunxi musb driver but >> > usb0-vbus is finally disabled. >> > >> > There are few confusing messages as well: >> > >> > >> > [ 3.254996] reg-fixed-voltage usb0-vbus: could not find pctldev for >> node >> > /soc@01c00000/pinctrl@01c20800 usb0_vbus_pin@0, deferring probe >> > [ 3.255033] reg-fixed-voltage usb1-vbus: could not find pctldev for >> node >> > /soc@01c00000/pinctrl@01c20800/usb1_vbus_pin@0, deferring probe >> > [ 3.255067] reg-fixed-voltage usb2-vbus: could not find pctldev for >> node >> > /soc@01c00000/pinctrl@01c20800/usb2_vbus_pin@0, deferring probe >> > [ 3.257948] usbcore: registered new interface driver usbfs >> > [ 3.258023] usbcore: registered new interface driver hub >> > [ 3.258127] usbcore: registered new device driver usb >> > [ 3.369469] sun4i-usb-phy 1c13400.phy: could not find pctldev for >> node >> > /soc@01c00000/pinctrl@01c20800/usb0_id_detect_pin@0, deferring probe >> > >> > >> > ... >> > >> > >> > [ 3.846532] usb_phy_generic.0.auto supply vcc not found, using dummy >> > regulator >> > [ 3.847087] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver >> > [ 3.847109] musb-hdrc musb-hdrc.1.auto: new USB bus registered, >> assigned >> > bus number 5 >> > [ 3.847554] usb usb5: New USB device found, idVendor=1d6b, >> idProduct=0002 >> > [ 3.847569] usb usb5: New USB device strings: Mfr=3, Product=2, >> > SerialNumber=1 >> > [ 3.847579] usb usb5: Product: MUSB HDRC host driver >> > [ 3.847588] usb usb5: Manufacturer: Linux 4.5.2-sunxi musb-hcd >> > [ 3.847598] usb usb5: SerialNumber: musb-hdrc.1.auto >> > [ 3.848439] hub 5-0:1.0: USB hub found >> > [ 3.848513] hub 5-0:1.0: 1 port detected >> > [ 3.877070] usb0-vbus: disabling >> > >> > >> > I have also verified usb0_id_det and usb0_vbus_det wotk fine as inputs >> (cat >> > /sys/kernel/debug/gpio) >> > >> > GPIOs 0-287, platform/1c20800.pinctrl, 1c20800.pinctrl: >> > gpio-50 ( |sysfs ) in hi >> > gpio-67 ( |ahci-5v ) out hi >> > gpio-81 ( |usb0-vbus ) out lo >> > gpio-87 ( |sysfs ) out lo >> > gpio-88 ( |sysfs ) out hi >> > gpio-225 ( |cd ) in hi IRQ >> > gpio-226 ( |? ) out hi >> > gpio-227 ( |usb2-vbus ) out hi >> > gpio-228 ( |usb0_id_det ) in hi IRQ >> > gpio-229 ( |usb0_vbus_det ) in lo IRQ >> > gpio-230 ( |usb1-vbus ) out hi >> > but usb0-vbus is always low and the USB OTG behaves like a dead. >> > >> > The only reaction was when USB OTG with dr_mode = 'host' was connected >> (by >> > error) to other board USB Host. >> > >> > In this situation USB OTG enumeration try was registered at both sides >> but >> > finished with error (probably because of support lack). >> > >> > >> > Please, help me to find a solution. >> > >> > >> > Best regards >> > >> > Chris >> > >> > >> > -- >> > You received this message because you are subscribed to the Google >> Groups >> > "linux-sunxi" group. >> > To unsubscribe from this group and stop receiving emails from it, send >> an >> > email to [email protected]. >> > For more options, visit https://groups.google.com/d/optout. >> > -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. 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