devb-sdmmc-mx8x

Driver for the SDHI memory card, MMC, and eMMC devices.

Syntax:

devb-sdmmc-mx8x [cam cam_options]
                [sdmmc sdmmc_options...][sdio sdio_options...]
                [blk io-blk_options...] &

Runs on:

QNX OS

Targets:

aarchle64

Options:

In additional to the common options available for the devb-sdmmc-* command as described in the QNX OS Utilities Reference in the QNX SDP 8.0 documentation, this driver supports the following board-specific options:

emmc
Embedded mmc chip mode set; it implies that the nocd option is set as well.
nocd
Card-detect is not activated.
cd_base=base_num
Card-detect I/O base address.
cd_pin=pin_num
Card-detect I/O bit number.
cd_irq=irq_num
Card-detect GPIO IRQ, obtained from the interrupt map. If not set, it works in non-interrupt mode.
cd=cd_options
One option to specify all card-detect options. The format is as follows:
cd=cd_base^cd_pin^cd_irq
wp_base=address
Write-protect I/O base address.
wp_pin=bit_num
Write-protect I/O bit number.
wp=wp_options
One option to specify all write-protect options; The format is as follows:
wp=wp_base^wp_pin
vdd1_8
1.8 V support capability.
rs_base=reset_address
Reset I/O base address.
rs_pin=reset_pin
Reset I/O bit number.
rs_irq=reset_irq
Reset GPIO IRQ, obtained from the interrupt map.
io=value
Set IO type to GPIO or RGPIO (default: gpio); The format is as follows:
io=gpio|rgpio
drv_type=drivertype
Driver type.
sdll=value
Strobe DLL Control Slave Delay Target. This value can be programmed in 1/16th increments of a STROBE_REF_CLOCK half-period.
tuning_mode=[manual|standard]
The tuning algorithm to use.(Default: manual)
  • standard — Use hardware-based tuning. This tuning tends to be faster.
  • manual — Use software algorithms to perform tuning. The software changes the tuning values until it finds good values.
std_tuning_cfg=value
Standard tuning configartion. (FORMAT: cd=tuning_step^tuning_start_tap) Default 2^20.
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