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Diffstat (limited to 'qemu/roms/u-boot/doc/README.fsl-hwconfig')
| -rw-r--r-- | qemu/roms/u-boot/doc/README.fsl-hwconfig | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/doc/README.fsl-hwconfig b/qemu/roms/u-boot/doc/README.fsl-hwconfig new file mode 100644 index 000000000..e752505da --- /dev/null +++ b/qemu/roms/u-boot/doc/README.fsl-hwconfig @@ -0,0 +1,46 @@ +Freescale-specific 'hwconfig' options. + +This file documents Freescale-specific key:value pairs for the 'hwconfig' +option. See README.hwconfig for general information about 'hwconfig'. + +audclk + Specific to the P1022DS reference board. + + This option specifies which of the two oscillator frequencies should be + routed to the Wolfson WM8776 codec. The ngPIXIS can be programmed to + route either a 11.2896MHz or a 12.288MHz clock. The default is + 12.288MHz. This option has two effects. First, the MUX on the board + will be programmed accordingly. Second, the clock-frequency property + in the codec node in the device tree will be updated to the correct + value. + + 'audclk:11' + Select the 11.2896MHz clock + + 'audclk:12' + Select the 12.288MHz clock + +usb + Specific to boards have USB controller + + This option specifies the following for a USB controller: + + - which controller mode to use + - which USB PHY to use + + This is used by generic USB device-tree fixup function to update + modified values of phy type and controller mode. + + Also used for configuring multiple USB controllers such that + 'usbN' (where N is 1, 2, etc. refers to controller no.) + + 'phy_type' + Select USB phy type: 'utmi' OR 'ulpi' + + 'dr_mode' + Select USB controller mode: 'host', 'peripheral' OR 'otg' + + Examples: + usb1:dr_mode=host;usb2:dr_mode=peripheral' + + usb1:dr_mode=host,phy_type=utmi;usb2:dr_mode=host' |