Differences

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--- en:bpi-r2:otg [2020/11/29 16:24] – frank
+++ en:bpi-r2:otg [2023/06/08 17:06] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+====== OTG ======
+OTG is not yet working, page only created to save debug-steps with musb-driver merged in 5.7
+https://github.com/frank-w/BPI-R2-4.14/tree/5.9-otg
+kernel-options:
+  CONFIG_CONFIGFS_FS=y
+  #OTG
+  CONFIG_USB_CONN_GPIO=y
+  CONFIG_USB_MUSB_HDRC=y
+  CONFIG_USB_MUSB_MEDIATEK=y
+  CONFIG_NOP_USB_XCEIV=y
+  CONFIG_USB_CONFIGFS=y
+  #CONFIG_USB_CONFIGFS_MASS_STORAGE=y
+  #CONFIG_PHY_MTK_TPHY=y
+  CONFIG_USB_GADGET=y
+  CONFIG_USB_MUSB_DUAL_ROLE=y
+  CONFIG_USB_INVENTRA_DMA=y
+for dma-error i enabled
+  CONFIG_USB_INVENTRA_DMA=y
+and additional for role-switch
+  CONFIG_USB_GADGET=y
+  CONFIG_USB_MUSB_DUAL_ROLE=y
+<code>
+mount -t configfs none /sys/kernel/config
+cd /sys/kernel/config/usb_gadget
+mkdir g1
+cd g1
+echo "0x0e8d" > idVendor
+echo "0x2002" > idProduct
+mkdir strings/0x409
+echo "0123456789ABCDEF" > strings/0x409/serialnumber
+echo "Mediatek Inc." > strings/0x409/manufacturer
+echo "mass_storage gadget" > strings/0x409/product
+mkdir functions/mass_storage.usb0
+mkdir configs/c.1
+mkdir configs/c.1/strings/0x409
+ln -s functions/mass_storage.usb0/ configs/c.1
+ls /sys/class/udc/
+echo xxx > UDC
+</code>