Hi Julien! Julien Boibessot <julien.boibessot@xxxxxxx> wrote: > Andreas Feuersinger a écrit : > > Everything works except for very bad datarate. So far the mxc_mmc > > driver does not handle any SDIO interrupts. Could that be the reason > > for the bad performance? > > > Definitly ! > (I had the same "problem" on my i.MX27 platform before using SDIO > interrupts) thank you! At least I know where to go ;) While trying to enable SDIO handling I look at the mainline kernel patch for SDIO interrupts in mxcmmc.c. But in order to apply that I have to port that driver, introduced in 2.6.29 to my 2.6.22 kernel version. In the first step I try to get it run without sdio support. The driver seems to load helper firmware successfully and also real firmware. After that it stops where the libertas driver says: "waiting for firmware to boot." Register status is as follows: mxcmci_irq:status: <6>BUF_WRITE_RDY |<6>END_CMD_RESP |<6>BUF_UND_RUN |<6>XBUF_EMPTY |<6>YBUF_EMPTY |<6> Looks like stopped clock? Is the firmware supposed to start some cmd? I have a different question: Does anybody know if it is possible to boot freescale development board mx27pdk using kernel versions greater 2.6.30 ? thanks Andreas -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
