From: Ramneek Mehresh <ramneek.mehr...@freescale.com>
Specify hwconfig usage for USB mode and phy change
Signed-off-by: Ramneek Mehresh <ramneek.mehr...@freescale.com>
Signed-off-by: Kumar Gala <ga...@kernel.crashing.org>
---
doc/README.fsl-hwconfig | 26 ++++++++++++++++++++++++++
1 files changed, 26 insertions(+), 0 deletions(-)
diff --git a/doc/README.fsl-hwconfig b/doc/README.fsl-hwconfig
index 03fea74..6889a70 100644
--- a/doc/README.fsl-hwconfig
+++ b/doc/README.fsl-hwconfig
@@ -19,3 +19,29 @@ 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'
+
--
1.7.2.3
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