linux - Custom Kernel, access eMMC memory -


i building kernels in company. have asurface 3 (non pro) device here , sould boot our own kernel , miniroot. far boots up, doesnt detect emmc memory. in future more emmc devices should supported added lot of mmc drivers directly kernel. limited 90mb miniroot size, every driver build kernel

here's current mmc config

cat kernel/config-x86_64-4.4.11 | grep mmc # config_pci_mmconfig not set config_mmc=y config_mmc_debug=y # mmc/sd/sdio card drivers config_mmc_block=m config_mmc_block_minors=8 config_mmc_block_bounce=y config_mmc_test=y # mmc/sd/sdio host controller drivers config_mmc_sdhci=y config_mmc_sdhci_pci=y # config_mmc_ricoh_mmc not set config_mmc_sdhci_acpi=y config_mmc_sdhci_pltfm=y config_mmc_wbsd=y config_mmc_tifm_sd=y config_mmc_sdricoh_cs=y config_mmc_cb710=y config_mmc_via_sdmmc=y config_mmc_vub300=y config_mmc_ushc=y config_mmc_usdhi6rol0=y # config_mmc_realtek_usb not set config_mmc_toshiba_pci=y config_mmc_mtk=y  config_mmc_sdhci=y config_mmc_sdhci_pci=y config_mmc_sdhci_acpi=y config_mmc_sdhci_pltfm=y

still mmcblk device not show up. suggestions on how make work? modules might missing?

cheers

well surface 3 tablet works little bit different after adding gpio kernel modules emmc memory got recognized , usable


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