Hi Bing, thanks for your time. On 18.10.2012 02:20, Bing Zhao wrote: >> we're trying to get a SD8787 to play which is connected via SDIO to an >> OMAP hsmmc (AM33xx hardware). This fails with the following message: >> >> # modprobe mwifiex_sdio >> [ 13.984779] [sched_delayed] sched: RT throttling activated >> [ 22.401700] mwifiex_sdio mmc0:0001:1: FW failed to be active in time >> >> The firmware sd8787_uapsta.bin was taken from the linux-firmware.git and >> apparently is transferred successfully, but then consequently fails to >> do start up. When compiled with CONFIG_MMC_CONFIG=y, tons of successful >> messages are logged like this: >> >> [ 2607.867660] mmc0: starting CMD52 arg 00000a00 flags 00000195 >> [ 2607.867713] mmc0: req done (CMD52): 0: 00001000 00000000 00000000 >> 00000000 >> [ 2607.883273] mmc0: starting CMD52 arg 00000a00 flags 00000195 >> [ 2607.883327] mmc0: req done (CMD52): 0: 00001000 00000000 00000000 >> 00000000 >> [ 2607.898905] mmc0: starting CMD52 arg 00000a00 flags 00000195 > > It keeps reading Int_Pending (CCCR register 0x05). Perhaps you have interrupt storm here? > Could you please check if your controller clears interrupt properly? The reason for this issue was a different one: the 32KHz clock was not running. I just learned that the firmware download will succeed nevertheless, but the firmware won't start. Note to myself: make sure to rule out any hardware issue before bordering developers :-/ But that posting may be a help to someone with similar issues one day ... >> The kernel we're based on is Linus' current merge tree (3.7-rc1), but >> earlier version (3.6) have shown the same issue. >> >> Before we start digging into this, I want to ask whether there are any >> common pitfalls we should be aware of and that could cause this? > > You may want to get a newer firmware release from here: > > http://git.marvell.com/?p=mwifiex-firmware.git;a=summary > git://git.marvell.com/mwifiex-firmware.git Note that contains the same firmware binary than the linux-firmware repository. >> Please let me know whether you need any further information. > > It might be helpful if you post messages before this line: > > [ 2607.867660] mmc0: starting CMD52 arg 00000a00 flags 00000195 Thanks again! Daniel -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
