On Tue, Aug 4, 2015 at 4:06 PM, Robert Nelson <[email protected]> wrote: > On Tue, Aug 4, 2015 at 1:19 PM, <[email protected]> wrote: >> I am using the Digilent PmodSD as the second sd card for the BBB: >> http://www.digilentinc.com/Products/Detail.cfm?Prod=PMOD-SD >> >> I've been following this forum: >> http://www.alteraforum.com/forum/showthread.php?t=19335&page=4 >> >> but assumes that i have the mmc_spi driver, which isnt found in the >> 4.1.2-ti-r4 kernel on my beaglebone: mmc_spi.c source file doesnt exist >> also. >> >> root@beaglebone:~# find /lib/modules/`uname -r` -type f -name "*.ko" | grep >> mmc >> >> /lib/modules/4.1.2-ti-r4/kernel/drivers/media/mmc/siano/smssdio.ko >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mmc/host/sdhci.ko >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mmc/host/vub300.ko >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mmc/host/dw_mmc-exynos.ko >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mmc/host/dw_mmc-pltfm.ko >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mmc/host/ushc.ko >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mmc/host/dw_mmc.ko >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mmc/host/sdhci-pltfm.ko >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mmc/host/rtsx_usb_sdmmc.ko >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mmc/card/sdio_uart.ko >> >> >> root@beaglebone:~# find /lib/modules/`uname -r` -type f -name "*.ko" | grep >> spi >> >> >> /lib/modules/4.1.2-ti-r4/kernel/drivers/misc/ad525x_dpot-spi.ko >> /lib/modules/4.1.2-ti-r4/kernel/drivers/spi/spi-butterfly.ko >> /lib/modules/4.1.2-ti-r4/kernel/drivers/spi/spi-lm70llp.ko >> /lib/modules/4.1.2-ti-r4/kernel/drivers/spi/spi-omap2-mcspi.ko >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mtd/spi-nor/spi-nor.ko >> /lib/modules/4.1.2-ti-r4/kernel/drivers/scsi/scsi_transport_spi.ko >> /lib/modules/4.1.2-ti-r4/kernel/drivers/net/wireless/ti/wl1251/wl1251_spi.ko >> /lib/modules/4.1.2-ti-r4/kernel/drivers/net/wireless/ti/wlcore/wlcore_spi.ko >> /lib/modules/4.1.2-ti-r4/kernel/drivers/net/can/spi/mcp251x.ko >> /lib/modules/4.1.2-ti-r4/kernel/drivers/mfd/mc13xxx-spi.ko >> >> >> In another forum, a person solved this by actually interfacing the second >> SD to the mmc lines: SPI-SD Card >> >> I dont see how this will work since mmc1 lines on the p8 header are used by >> the board. And when i wire my sd card to these lines the Beaglebone doesnt >> boot up. Also the mmc2 on the p8 header doesnt have a cmd mode pin >> (mmc2_cmd), so i cant use these lines. There are another set of mmc2 lines >> on the p9 header but its also missing a mmc2_cmd and a mmc2_clk mode pin. >> >> Any insight on how to add a second SD card? > > CONFIG_HIGHMEM=y i set... > > 472 config MMC_SPI > 473 tristate "MMC/SD/SDIO over SPI" > 474 depends on SPI_MASTER && !HIGHMEM && HAS_DMA > 475 select CRC7 > 476 select CRC_ITU_T > 477 help > 478 Some systems access MMC/SD/SDIO cards using a SPI controller > 479 instead of using a "native" MMC/SD/SDIO controller. This has a > 480 disadvantage of being relatively high overhead, but a > compensating > 481 advantage of working on many systems without dedicated > MMC/SD/SDIO > 482 controllers. > 483 > 484 If unsure, or if your system has no SPI master driver, say N. > > So rebuild the kernel without HIGHMEM, then you can enable MMC_SPI..
Note it's been depended on !HIGHMEM since it's initial upstreaming.. https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=15a0580ced081a0f7dc2deea8a4812bdc5e9a109 Regards, -- Robert Nelson https://rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
