diff options
| author | Ramneek Mehresh <ramneek.mehresh@freescale.com> | 2011-03-06 22:17:28 -0600 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2011-07-11 13:24:20 -0500 |
| commit | 636c316f9b1d75242c6b53dbfe308414067f20f4 (patch) | |
| tree | e20627ba59b69c5378194001fc12175a929b307a /doc/README.fsl-hwconfig | |
| parent | 72f4980b406f1c15751b5944223a045f58fe025f (diff) | |
| download | talos-obmc-uboot-636c316f9b1d75242c6b53dbfe308414067f20f4.tar.gz talos-obmc-uboot-636c316f9b1d75242c6b53dbfe308414067f20f4.zip | |
powerpc/85xx: Specify hwconfig usage for USB controller
Specify hwconfig usage for USB mode and phy change
Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'doc/README.fsl-hwconfig')
| -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 03fea74db3..e752505da4 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' |
