Hi Kumar Thanks for the advice. I will rebuild for powerpc and report back. B.t.w. what is the story behind the ppc and powerpc branches anyway ?
Regards Stefan ----- Original Message ----- From: "Kumar Gala" <[EMAIL PROTECTED]> To: "Stefan Meyer" <reyems at telkomsa.net> Cc: <linuxppc-embedded at ozlabs.org> Sent: Tuesday, April 11, 2006 3:03 PM Subject: Re: Linux kernel for MPC834X platform > > On Apr 11, 2006, at 5:30 AM, Stefan Meyer wrote: > >> Hi All >> Pardon the intrusion if this is not the correct way to get the >> relevant information, but I am relatively new to kernel hacking. >> Anyway here goes my question: >> I am getting a Freescale MPC8343 based board up and running and >> have been using the BSP (with patched 2.6.11 kernel) release by >> Freescale with great success. >> However when I tried to use the USB ISO transactions it seems to be >> non functional. I have connected a known good working codec (tested >> on my PC's usb) and tried to access it via the low level sound >> driver (/dev/dsp) but it only creates garbled noise. >> In the meanwhile, I have noticed that the official kernel release >> 2.6.17 also start supporting the MPC834X platform and would rather >> like to persue that avenue to get my problems addressed (hopefully). >> I have downloaded the latest 2.6.17 kernel and got it going with >> the configuration for MPC834x_sys, with relation to booting and >> ethernet comms. >> However there are clearly no provision in the USB driver for >> setting up the usb clocks and ports (which is of course MPC834x >> specific). >> I have tried to hack it by inserting approriate code form the >> 2.6.11 freescale kernel but with very little success. >> On inspection of the 2.6.11 kernel from Freescale I have also >> noticed that the USB core drivers were heavily modified around DMA >> buffer management, although the 2.6.17 had no such hacks in place. >> My question simply relates to the status of the MPC834x >> implementation on the 2.6.17 kernel in so far that it is >> operational and being tested on hardware platforms. Could you >> please direct me to the persons(s) who have experience with this >> platform ? > > The USB support for MPC834x only exists if you build it for > ARCH=powerpc. There is a patch on the list archives for adding > support to ARCH=ppc. I don't know if there is any issue with ISO > transactions in those version, but they been shown to work with USB > ethernet and USB HD devices. > > - kumar >
