From other post : All wifi commands failing with Mirage board
We can see another module cited for SDIO/MMC module : msm_sdcc .
This one is not provided in my kernel.
EDIT: My bad, it is a module made for mangOH green. ^^
Summary
root@mangoh9:~# cat /lib/modules/3.18.44/modules.dep
kernel/fs/quota/quota_v1.ko:
kernel/fs/quota/quota_v2.ko: kernel/fs/quota/quota_tree.ko
kernel/fs/quota/quota_tree.ko:
kernel/crypto/seqiv.ko:
kernel/crypto/ctr.ko:
kernel/crypto/ccm.ko:
kernel/crypto/arc4.ko:
kernel/crypto/michael_mic.ko:
kernel/crypto/ansi_cprng.ko:
kernel/block/test-iosched.ko:
kernel/drivers/net/phy/at803x.ko:
kernel/drivers/net/phy/qca8337.ko:
kernel/drivers/net/ethernet/qualcomm/emac/qcom_emac.ko: kernel/drivers/net/phy/qca8337.ko
kernel/drivers/net/wireless/ti/wlcore/wlcore.ko: kernel/net/mac80211/mac80211.ko kernel/net/wireless/cfg80211.ko
kernel/drivers/net/wireless/ti/wlcore/wlcore_sdio.ko:
kernel/drivers/net/wireless/ti/wl12xx/wl12xx.ko: kernel/drivers/net/wireless/ti/wlcore/wlcore.ko kernel/net/mac80211/mac80211.ko kernel/net/wireless/cfg80211.ko
kernel/drivers/net/wireless/ti/wl1251/wl1251.ko: kernel/net/mac80211/mac80211.ko kernel/net/wireless/cfg80211.ko
kernel/drivers/net/wireless/ti/wl18xx/wl18xx.ko: kernel/drivers/net/wireless/ti/wlcore/wlcore.ko kernel/net/mac80211/mac80211.ko kernel/net/wireless/cfg80211.ko
kernel/drivers/usb/serial/usbserial.ko:
kernel/drivers/usb/serial/ftdi_sio.ko: kernel/drivers/usb/serial/usbserial.ko
kernel/drivers/input/misc/gpio_event.ko:
kernel/drivers/input/misc/gpio_matrix.ko:
kernel/drivers/input/misc/gpio_input.ko:
kernel/drivers/input/misc/gpio_output.ko:
kernel/drivers/input/misc/gpio_axis.ko:
kernel/drivers/mmc/card/mmc_test.ko:
kernel/drivers/mmc/card/mmc_block_test.ko: kernel/block/test-iosched.ko
kernel/drivers/iio/imu/bmi160/bmi160.ko:
kernel/net/netfilter/xt_physdev.ko:
kernel/net/wireless/cfg80211.ko:
kernel/net/mac80211/mac80211.ko: kernel/net/wireless/cfg80211.ko
kernel/lib/crc7.ko:
extra/embms_kernel.ko:
Maybe this fails due to that lack?
Edit : Not the case because not made for this platform.
For the persons who can perform with their SD card what modules do you use?