On 04/23/2010 11:35 AM, Mike Frysinger wrote:
On Thursday 22 April 2010 22:53:34 Thomas Chou wrote:
This patch supports mmc/sd card with spi interface. I have tested with sd and mmc cards. But there is still ocr issue with SDHC.
now the semi-obvious question ... how does this differ from the old spi_mmc.c driver ? i see this doesnt rely on the legacy mmc framework, but what about device/commandset support parity ?
Hi Mike,
Right after playing your spi_mmc.c, I started this one based on generic mmc framework last night. I tried hard to recall my memory about mmc/sd, and hoped to catch up the merge window.
Do you mean "parity" as crc? Crc is not supported, but can be added. I make some command set translation when spi doesn't support.
it's too bad the new framework doesnt allow for dynamic probing like the spi layer. makes it a pain to work with a SPI/MMC card that can have the CS changed on the fly. -mike
Maybe we can move spi_setup_slave to the mmc->init() and do probing. Or shall we add a subcommand?
Cheers, Thomas