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Diffstat (limited to 'README')
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@@ -883,6 +883,68 @@ The following options need to be configured: for differential drivers: 0x00001000 for single ended drivers: 0x00005000 +- USB Device: + Define the below if you wish to use the USB console. + Once firmware is rebuilt from a serial console issue the + command "setenv stdin usbtty; setenv stdout usbtty" and + attach your usb cable. The Unix command "dmesg" should print + it has found a new device. The environment variable usbtty + can be set to gserial or cdc_acm to enable your device to + appear to a USB host as a Linux gserial device or a + Common Device Class Abstract Control Model serial device. + If you select usbtty = gserial you should be able to enumerate + a Linux host by + # modprobe usbserial vendor=0xVendorID product=0xProductID + else if using cdc_acm, simply setting the environment + variable usbtty to be cdc_acm should suffice. The following + might be defined in YourBoardName.h + + CONFIG_USB_DEVICE + Define this to build a UDC device + + CONFIG_USB_TTY + Define this to have a tty type of device available to + talk to the UDC device + + CFG_CONSOLE_IS_IN_ENV + Define this if you want stdin, stdout &/or stderr to + be set to usbtty. + + mpc8xx: + CFG_USB_EXTC_CLK 0xBLAH + Derive USB clock from external clock "blah" + - CFG_USB_EXTC_CLK 0x02 + + CFG_USB_BRG_CLK 0xBLAH + Derive USB clock from brgclk + - CFG_USB_BRG_CLK 0x04 + + If you have a USB-IF assigned VendorID then you may wish to + define your own vendor specific values either in BoardName.h + or directly in usbd_vendor_info.h. If you don't define + CONFIG_USBD_MANUFACTURER, CONFIG_USBD_PRODUCT_NAME, + CONFIG_USBD_VENDORID and CONFIG_USBD_PRODUCTID, then U-Boot + should pretend to be a Linux device to it's target host. + + CONFIG_USBD_MANUFACTURER + Define this string as the name of your company for + - CONFIG_USBD_MANUFACTURER "my company" + + CONFIG_USBD_PRODUCT_NAME + Define this string as the name of your product + - CONFIG_USBD_PRODUCT_NAME "acme usb device" + + CONFIG_USBD_VENDORID + Define this as your assigned Vendor ID from the USB + Implementors Forum. This *must* be a genuine Vendor ID + to avoid polluting the USB namespace. + - CONFIG_USBD_VENDORID 0xFFFF + + CONFIG_USBD_PRODUCTID + Define this as the unique Product ID + for your device + - CONFIG_USBD_PRODUCTID 0xFFFF + - MMC Support: The MMC controller on the Intel PXA is supported. To |