From 636c316f9b1d75242c6b53dbfe308414067f20f4 Mon Sep 17 00:00:00 2001 From: Ramneek Mehresh <ramneek.mehresh@freescale.com> Date: Sun, 6 Mar 2011 22:17:28 -0600 Subject: [PATCH] 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> --- doc/README.fsl-hwconfig | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) 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' -- 2.39.5