Help on MPC82XX USB Host controller Development using m82xx-hcd.

Laurent Pinchart laurentp at
Thu Mar 27 19:56:08 EST 2008

Hi Amarendra,

On Wednesday 26 March 2008 17:11, Amarendra_Reddy wrote:
> Hi all,
> We are working on implementation of the USB host controller driver for the
> MPC8272ADS (eval board). 
> The USB Host controller on MPC8272 chip is neither UHCI nor OHCI compliant. 
> We downloaded the project cpm2usb and the patches created by Mr.Mike
> Rapoport from
> We integrated the 'm82xx-hcd' into the 2.6.10 source with few changes to usb
> data structures (usb_hcd,usb_device,usb_host_endpoint) and to struct
> hc_driver. Also updated the function ''tx_err' present in m82xx-hcd.c.

The cpm2usb project isn't maintained. If possible you should upgrade to a more 
recent kernel and switch to the powerpc architecture where a new USB driver 
called fhci is available.

The MPC872ADS is supported in recent kernels so switching shouldn't be too 

Best regards,

Laurent Pinchart
CSE Semaphore Belgium

Chaussée de Bruxelles, 732A
B-1410 Waterloo

T +32 (2) 387 42 59
F +32 (2) 387 42 75
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