Messages in this thread | | | Date | Mon, 22 Oct 2007 20:03:35 +0200 | From | Pierre Ossman <> | Subject | Re: mmc_spi stopped working |
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On Wed, 17 Oct 2007 12:37:13 -0700 David Brownell <david-b@pacbell.net> wrote:
> When enumerating MMC cards using SPI, don't support the "just probe" > mechanism since it doesn't always work. Instead, always wait for the > reset to complete before issuing the next request. > > This is a regression ... this SanDisk MMC card used to enumerate with > no trouble, despite this particular spec violation. >
I've been testing a bit more here, and I can't get this particular bug. I have others though:
Out of my five MMC cards, only two work properly. One doesn't respond to SPI commands at all, and two hang on a second CMD0 and return ILLEGAL_COMMAND on a second run of CMD1. All of this is of course wildly out of spec. SPI seems to be a bonus, not a given. :/
As for your card, could you send me a dump as I'm unable to produce the issue here?
Rgds -- -- Pierre Ossman
Linux kernel, MMC maintainer http://www.kernel.org PulseAudio, core developer http://pulseaudio.org rdesktop, core developer http://www.rdesktop.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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