On Friday, December 24, 2010 02:16:05 Thomas Chou wrote:
This is the v9 update of the mmc_spi driver. Please enable DEBUG on the top of mmc_spi.c and help me perform the tests.
A new spi_set_speed() is added to meet the 400KHz clock requirement during mmc card initialization. An example update to bfin_spi is included. The altera_spi core does not support speed change, so I am going to post a new opencore ip for this.
this seems to work much nicer for me. only odd thing is that 'fatls' does not work if i dont 'mmcinfo' first. do you see the same ? maybe this is (currently) expected behavior ?
from cold boot:
bfin> mmc_spi 4 MMC_SPI: 0 at 0:4 hz 25000000 mode 0
bfin> fatls mmc 0:1 MMC: block number 0x1 exceeds max(0x0) ** Can't read from device 0 **
** Unable to use mmc 0:1 for fatls **
bfin> mmcinfo Device: MMC_SPI Manufacturer ID: 0 OEM: 2 Name: card Tran Speed: 25000000 Rd Block Len: 512 SD version 1.0 High Capacity: No Capacity: 31326208 Bus Width: 1-bit
bfin> fatls mmc 0:1 private/ bootmii/ 3041 installer.log apps/ 5213 readme-bootmii.txt 7273 readme-hbc.txt config/
3 file(s), 4 dir(s)
-mike