projects / J-u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| a2d12f88 TT |
1 | Freescale-specific 'hwconfig' options. |
| 2 | ||
| 3 | This file documents Freescale-specific key:value pairs for the 'hwconfig' | |
| 4 | option. See README.hwconfig for general information about 'hwconfig'. | |
| 5 | ||
| 6 | audclk | |
| 7 | Specific to the P1022DS reference board. | |
| 8 | ||
| 9 | This option specifies which of the two oscillator frequencies should be | |
| 10 | routed to the Wolfson WM8776 codec. The ngPIXIS can be programmed to | |
| 11 | route either a 11.2896MHz or a 12.288MHz clock. The default is | |
| 12 | 12.288MHz. This option has two effects. First, the MUX on the board | |
| 13 | will be programmed accordingly. Second, the clock-frequency property | |
| 14 | in the codec node in the device tree will be updated to the correct | |
| 15 | value. | |
| 16 | ||
| 17 | 'audclk:11' | |
| 18 | Select the 11.2896MHz clock | |
| 19 | ||
| 20 | 'audclk:12' | |
| 21 | Select the 12.288MHz clock | |
| 636c316f RM |
22 | |
| 23 | usb | |
| 24 | Specific to boards have USB controller | |
| 25 | ||
| 26 | This option specifies the following for a USB controller: | |
| 27 | ||
| 28 | - which controller mode to use | |
| 29 | - which USB PHY to use | |
| 30 | ||
| 31 | This is used by generic USB device-tree fixup function to update | |
| 32 | modified values of phy type and controller mode. | |
| 33 | ||
| 34 | Also used for configuring multiple USB controllers such that | |
| 35 | 'usbN' (where N is 1, 2, etc. refers to controller no.) | |
| 36 | ||
| 37 | 'phy_type' | |
| 38 | Select USB phy type: 'utmi' OR 'ulpi' | |
| 39 | ||
| 40 | 'dr_mode' | |
| 41 | Select USB controller mode: 'host', 'peripheral' OR 'otg' | |
| 42 | ||
| 43 | Examples: | |
| 44 | usb1:dr_mode=host;usb2:dr_mode=peripheral' | |
| 45 | ||
| 46 | usb1:dr_mode=host,phy_type=utmi;usb2:dr_mode=host' |