Hi all, I succeded testing the usb hostcontroller (sources from www.heeltoe.com written by Brad Parker).
1. Hardware - TQM823L board with mpc823e (PPC823EZTnnB2) - connection between X7/7 (Timer 1 output) and X9/16 (/DREQ1) to enable the spi/iic microcode patch - 4 delay gates (74LVT244A) beetwen X32/1 resp. X32/3 (VM/VP outputs of the PDIUSBP11A) and X32/2 resp. X32/4 (USBXRM and USBXRP inputs of the mpc823e) required , power supply from X3/9 (+3,3V) an X3/3 (GND) - connection of a high speed device (hub) to the usb connector required (low speed devices are only detected behind this hub) 2. Software - linux-2.4.4 kernel sources from ftp.denx.de - m8xxhci.c from www.heeltoe.com (added as config option CONFIG_USB_MPC8xx and to .../drivers/usb/...) #ifdef CONFIG_TQM823L #define USE_TIMER1_FOR_SOF #define USE_PA4_CLK4 #undef POLL_FOR_HUB #endif - kernel configuration (.config) CONFIG_UCODE_PATH=y CONFIG_USB=y CONFIG_USB_DEBUG=y (for testing) CONFIG_USB_MPC8xx=y (don't include usb mouse and usb keyboard drivers for testing, because the mouse an keyboard drivers claim the interfaces and the sample driver cannot see any data transfers) CONFIG_INPUT=y CONFIG_INPUT_EVDEV=y (mousedev and keybdev drivers don't link for ppc - undefined symbols) 3. Testing - I used the sample usb driver from Alessandro Rubini and Jonathan Corbet and plugged it as a module to the running kernel. (http://examples.oreilly.com/linuxdrive2/ldd2-samples-1.0.1.tar.gz) - I plugged a usb mouse and a usb keyboard to the external usb hub, connected to the board. - When I moved the mouse, pressed mouse buttons or keys on the keybord, the kernel dumped the results to the console, so I think the host con- troller works correctly. Thanks a lot for all help and comments. Now I want to check, if I can repeat the results with my FADS823 board, but I'm not sure if there is a possibility to do the necessary hardware modifications. Specially I don't have any idea how to insert the delay gates. Any hints would be greatly appreciated Christian Schroeder Dr.-Ing. Christian Schroeder Institut fuer Mikroelektronik- und Mechatronik-Systeme Langewiesener Strasse 22 98693 Ilmenau Telefon: +49 3677 678315 Telefax: +49 3677 678337 Mobil: +49 173 5789172 e-mail: christian.schroeder at imms.de www: http://www.imms.de/~christi/cs.html pgp: finger christi at finger.imms.de ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
