"Marco Braga" <firstname.lastname@example.org> wrote:
>2007/3/20, Takeyoshi Kikuchi <email@example.com>:
>Our Au1500 board works fine with Ricoh CardBus Bridge and NEC USB
>> However, the board does not work stably with TI PCI1520 controller.
>As you have seen, we've experienced the same problem with the PCI1510. Can
>you please give me the exact product number of both the controllers you use
>(USB / Cardbus)? In particular your cardbus experience is interesting
>because from the informations I've received until now I tought that no
>cardbus controller could work on Au1500's PCI.
The controllers are as follows:
Ricoh R5C486 (Vendor/Device 1180:0476)
NEC uPD720101 (CardBus) (Vendor/Device 1033:00e0)
Ali IEEE1394/USB Combo (Vendor/Device 10b9:5239) also works.
The combination of Au1500(MIPS32) and EHCI code has a problem: ll/sc
always get locked when it manipulates an atomic variable in the EHCI
descriptor (qh_get() in ehci-mem.c).
We applied a patch that adds a function to lib/kref.c so that it doesn't
Linux 2.6.20 has a problem in ioremap, so we replaced the code with one in