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: - 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.
