Greetings, I have an mpc8347 board here (A&M Rattler 8347). It shipped with a 2.6.16 patched enough to boot the board, but support for freescale USB 2.0 (ehci) is not present.
Working my way backwards in the mainline kernel tree (2.6.18-rc5), I found drivers/usb/host/ehci-fsl.c, for FreeScale/PPC EHCI support. In that module, usb_hcd_fsl_probe() requires an initialized "struct fsl_usb2_platform_data", which only appears in arch/powerpc/sysdev/fsl_soc.c, yet the 2.6.16 patch provided puts the board in arch/ppc. My question is, what would be the best way to go about getting ehci-fsl.c working with this board? 1) Nudge the Rattler port from arch/ppc to arch/powerpc. One problem with this is that the rattler uses RedBoot, and reading this, http://ozlabs.org/pipermail/linuxppc-embedded/2006-August/024116.html it looks like arch/powerpc wants to boot from OpenFirmware-like "flattened device tree" (does RedBoot support this?). 2) Support ehci-fsl.c from arch/ppc. If arch/ppc is deprecated, that's a bad long-term solution. And since fsl_soc.c lives under arch/powerpc, that doesn't look good either. Thoughts? -Jamie