diff options
Diffstat (limited to 'nuttx/drivers/mmcsd/Kconfig')
| -rwxr-xr-x[-rw-r--r--] | nuttx/drivers/mmcsd/Kconfig | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/nuttx/drivers/mmcsd/Kconfig b/nuttx/drivers/mmcsd/Kconfig index 720bbf20a..6d3933897 100644..100755 --- a/nuttx/drivers/mmcsd/Kconfig +++ b/nuttx/drivers/mmcsd/Kconfig @@ -32,11 +32,27 @@ config MMCSD_MMCSUPPORT Enable support for MMC cards config MMCSD_HAVECARDDETECT - bool "MMC/SD card detection" - default y - ---help--- - SDIO driver card detection is - 100% accurate + bool "MMC/SD card detection" + default y + ---help--- + SDIO driver card detection is + 100% accurate + +config MMCSD_HAVE_SDIOWAIT_WRCOMPLETE + bool "Use SDIO_D Busy to detect Write Complete" + default n + ---help--- + SDIO driver will use SDIO_D Busy signaling to detect Write Complete. + This option when selected, will enable the MMCSD driver to use the + underlying (stm32_sdio only) drivers implementation of the SD specs + SDIO_D Busy signaling to detect Write Complete. This will avoid + potentially very long (600Ms+) busy waiting in the MMCSD driver. + To implement SDIO_D Busy signaling, the underlying driver must + be capable of switching the GPIO_SDIO_D0 to be a rising edge sensitive + interrupt pin. It must then, condition that pin to detect the rising edge + on recipet of SDWAIT_WRCOMPLETE in the SDIO_WAITENABLE call and + return it back to regular SDIO mode, when either the ISR fires or pin is + found to be high in the SDIO_EVENTWAIT call. config MMCSD_SPI bool "MMC/SD SPI transfer support" |