| Timur Tabi | 8848d47 | 2010-07-21 16:56:19 -0500 | [diff] [blame] | 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 |
| Ramneek Mehresh | a7949d7 | 2011-03-06 22:17:28 -0600 | [diff] [blame] | 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' |