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| -rw-r--r-- | doc/README.fsl-hwconfig | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/doc/README.fsl-hwconfig b/doc/README.fsl-hwconfig index 03fea74..e752505 100644 --- a/doc/README.fsl-hwconfig +++ b/doc/README.fsl-hwconfig @@ -19,3 +19,28 @@ audclk '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' |