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authorBecky Bruce <bgill@freescale.com>2006-02-07 13:44:08 -0600
committerPaul Mackerras <paulus@samba.org>2006-02-10 16:36:21 +1100
commitad71f123a9e9b809f6c829db1222ce0423a1153c (patch)
treed0e1bcb25b15360bf6a205de63bbea016adb8004 /Documentation/powerpc/booting-without-of.txt
parentb37ce281d729181b9862c4e3e112f9b5eea74ac9 (diff)
downloadlinux-linaro-stable-ad71f123a9e9b809f6c829db1222ce0423a1153c.tar.gz
[PATCH] powerpc: Add FSL USB node to documentation
Updated the documentation to include the definition of the USB device node format for Freescale SOC devices. Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'Documentation/powerpc/booting-without-of.txt')
-rw-r--r--Documentation/powerpc/booting-without-of.txt60
1 files changed, 59 insertions, 1 deletions
diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
index 54e5f9b1536d..d02c64953dcd 100644
--- a/Documentation/powerpc/booting-without-of.txt
+++ b/Documentation/powerpc/booting-without-of.txt
@@ -44,7 +44,6 @@
compiler and the textural representation of
the tree that can be "compiled" by dtc.
-
November 21, 2005: Rev 0.5
- Additions/generalizations for 32-bit
- Changed to reflect the new arch/powerpc
@@ -1307,6 +1306,65 @@ platforms are moved over to use the flattened-device-tree model.
};
+ f) Freescale SOC USB controllers
+
+ The device node for a USB controller that is part of a Freescale
+ SOC is as described in the document "Open Firmware Recommended
+ Practice : Universal Serial Bus" with the following modifications
+ and additions :
+
+ Required properties :
+ - compatible : Should be "fsl-usb2-mph" for multi port host usb
+ controllers, or "fsl-usb2-dr" for dual role usb controllers
+ - phy_type : For multi port host usb controllers, should be one of
+ "ulpi", or "serial". For dual role usb controllers, should be
+ one of "ulpi", "utmi", "utmi_wide", or "serial".
+ - reg : Offset and length of the register set for the device
+ - port0 : boolean; if defined, indicates port0 is connected for
+ fsl-usb2-mph compatible controllers. Either this property or
+ "port1" (or both) must be defined for "fsl-usb2-mph" compatible
+ controllers.
+ - port1 : boolean; if defined, indicates port1 is connected for
+ fsl-usb2-mph compatible controllers. Either this property or
+ "port0" (or both) must be defined for "fsl-usb2-mph" compatible
+ controllers.
+
+ Recommended properties :
+ - interrupts : <a b> where a is the interrupt number and b is a
+ field that represents an encoding of the sense and level
+ information for the interrupt. This should be encoded based on
+ the information in section 2) depending on the type of interrupt
+ controller you have.
+ - interrupt-parent : the phandle for the interrupt controller that
+ services interrupts for this device.
+
+ Example multi port host usb controller device node :
+ usb@22000 {
+ device_type = "usb";
+ compatible = "fsl-usb2-mph";
+ reg = <22000 1000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ interrupt-parent = <700>;
+ interrupts = <27 1>;
+ phy_type = "ulpi";
+ port0;
+ port1;
+ };
+
+ Example dual role usb controller device node :
+ usb@23000 {
+ device_type = "usb";
+ compatible = "fsl-usb2-dr";
+ reg = <23000 1000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ interrupt-parent = <700>;
+ interrupts = <26 1>;
+ phy = "ulpi";
+ };
+
+
More devices will be defined as this spec matures.