Re: [PATCH 4/6] powerpc: add USB peripheral support to MPC8272ADS

On Wed, 2008-08-06 at 12:19 -0500, Scott Wood wrote:

On Wed, Aug 06, 2008 at 03:04:43PM +0800, Li Yang wrote:

quoted

Signed-off-by: Li Yang <redacted>
---
 arch/powerpc/boot/dts/mpc8272ads.dts      |    8 ++++++++
 arch/powerpc/platforms/82xx/mpc8272_ads.c |   25 +++++++++++++++++++++++++
 arch/powerpc/platforms/82xx/pq2ads.h      |    3 +++
 3 files changed, 36 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/boot/dts/mpc8272ads.dts b/arch/powerpc/boot/dts/mpc8272ads.dts
index b2ce4c0..75cc94c 100644
--- a/arch/powerpc/boot/dts/mpc8272ads.dts
+++ b/arch/powerpc/boot/dts/mpc8272ads.dts

@@ -256,6 +256,14 @@
 				#address-cells = <1>;
 				#size-cells = <0>;
 			};
+
+			usb@11b60 {
+				compatible = "fsl,qe_udc";

"fsl,mpc8272-usb", "fsl,cpm2-usb".

Where is fsl,qe_udc documented or used (other than in the BCSR setup)?
What does "udc" mean (the only reference to it in the 8272 manual is
under ATM)?

udc is a common name for USB device mode drivers to work with Linux
gadget.  We will have two separate drivers for USB host and device.
Probably we can have two compatibles "fsl,qe_udc" and "fsl,qe-usb-host"

- Leo