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 http://cpm2usb.sourceforge.net 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 output from console: --------------------------------------------------------------------------- NET: Registered protocol family 16 mpc8272ads: Init PCI: Probing PCI hardware PCI: Cannot allocate resource region 0 of device 0000:00:00.0 PCI: Cannot allocate resource region 1 of device 0000:00:00.0 usbcore: registered new driver usbfs usbcore: registered new driver hub Serial: CPM driver $Revision: 0.01 $ ttyCPM0 at MMIO 0xf0011a00 (irq = 40) is a CPM UART ttyCPM1 at MMIO 0xf0011a60 (irq = 43) is a CPM UART io scheduler noop registered io scheduler anticipatory registered io scheduler deadline registered io scheduler cfq registered loop: loaded (max 8 devices) fs_enet.c:v1.0 (Aug 8, 2005) fs_enet: eth0 Phy @ 0x0, type DM9161 (0x0181b881) fs_enet: eth1 Phy @ 0x3, type DM9161 (0x0181b881) Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx USB Universal Host Controller Interface driver v2.2 sl811: driver sl811-hcd, 06 Dec 2004 => driver mpc82xx-hcd, 2005 mpc82xx-hcd mpc82xx-hcd3: PQ2 intergrated USB controller v0.1 mpc82xx-hcd mpc82xx-hcd3: new USB bus registered, assigned bus number 1 Oops: kernel access of bad area, sig: 11 [#1] PREEMPT -------------------------------------------------------------------------- I have a little knowledge of USB support by Linux. If anyone has any clues or faced such a problem, it would be of great help if you could reply or give any suggestion. Thanks in advance Amarendra Reddy -- View this message in context: http://www.nabble.com/Help-on-MPC82XX-USB-Host-controller-Development-using-m82xx-hcd.-tp16304553p16304553.html Sent from the linuxppc-embedded mailing list archive at Nabble.com. _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
