# # MMC/SD host controller drivers # comment "MMC/SD/SDIO Host Controller Drivers" config MMC_ARMMMCI tristate "ARM AMBA Multimedia Card Interface support" depends on ARM_AMBA help This selects the ARM(R) AMBA(R) PrimeCell Multimedia Card Interface (PL180 and PL181) support. If you have an ARM(R) platform with a Multimedia Card slot, say Y or M here. If unsure, say N. config MMC_QCOM_DML tristate "Qualcomm Data Mover for SD Card Controller" depends on MMC_ARMMMCI && QCOM_BAM_DMA default y help This selects the Qualcomm Data Mover lite/local on SD Card controller. This option will enable the dma to work correctly, if you are using Qcom SOCs and MMC, you would probably need this option to get DMA working. if unsure, say N. config MMC_QCOM_TUNING tristate "Qualcomm Atheros SD Card Tuning for UHS" depends on MMC_ARMMMCI default y help Special tuning is needed for the MMC controller to be able to operate with Ultra High Speed (UHS) SD cards. Without tuning, UHS cards will be detected as high-speed cards and operate at lesser speeds. if unsure, say Y. config MMC_PXA tristate "Intel PXA25x/26x/27x Multimedia Card Interface support" depends on ARCH_PXA help This selects the Intel(R) PXA(R) Multimedia card Interface. If you have a PXA(R) platform with a Multimedia Card slot, say Y or M here. If unsure, say N. config MMC_SDHCI tristate "Secure Digital Host Controller Interface support" depends on HAS_DMA help This selects the generic Secure Digital Host Controller Interface. It is used by manufacturers such as Texas Instruments(R), Ricoh(R) and Toshiba(R). Most controllers found in laptops are of this type. If you have a controller with this interface, say Y or M here. You also need to enable an appropriate bus interface. If unsure, say N. config MMC_SDHCI_IO_ACCESSORS bool depends on MMC_SDHCI help This is silent Kconfig symbol that is selected by the drivers that need to overwrite SDHCI IO memory accessors. config MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER bool depends on MMC_SDHCI select MMC_SDHCI_IO_ACCESSORS help This option is selected by drivers running on big endian hosts and performing I/O to a SDHCI controller through a bus that implements a hardware byte swapper using a 32-bit datum. This endian mapping mode is called "data invariance" and has the effect of scrambling the addresses and formats of data accessed in sizes other than the datum size. This is the case for the Nintendo Wii SDHCI. config MMC_SDHCI_PCI tristate "SDHCI support on PCI bus" depends on MMC_SDHCI && PCI help This selects the PCI Secure Digital Host Controller Interface. Most controllers found today are PCI devices. If you have a controller with this interface, say Y or M here. If unsure, say N. config MMC_RICOH_MMC bool "Ricoh MMC Controller Disabler" depends on MMC_SDHCI_PCI default y help This adds a pci quirk to disable Ricoh MMC Controller. This proprietary controller is unnecessary because the SDHCI driver supports MMC cards on the SD controller, but if it is not disabled, it will steal the MMC cards away - rendering them useless. It is safe to select this even if you don't have a Ricoh based card reader. If unsure, say Y. config MMC_SDHCI_ACPI tristate "SDHCI support for ACPI enumerated SDHCI controllers" depends on MMC_SDHCI && ACPI select IOSF_MBI if X86 help This selects support for ACPI enumerated SDHCI controllers, identified by ACPI Compatibility ID PNP0D40 or specific ACPI Hardware IDs. If you have a controller with this interface, say Y or M here. If unsure, say N. config MMC_SDHCI_PLTFM tristate "SDHCI platform and OF driver helper" depends on MMC_SDHCI help This selects the common helper functions support for Secure Digital Host Controller Interface based platform and OF drivers. If you have a controller with this interface, say Y or M here. If unsure, say N. config MMC_SDHCI_OF_ARASAN tristate "SDHCI OF support for the Arasan SDHCI controllers" depends on MMC_SDHCI_PLTFM depends on OF help This selects the Arasan Secure Digital Host Controller Interface (SDHCI). This hardware is found e.g. in Xilinx' Zynq SoC. If you have a controller with this interface, say Y or M here. If unsure, say N. config MMC_SDHCI_OF_AT91 tristate "SDHCI OF support for the Atmel SDMMC controller" depends on MMC_SDHCI_PLTFM depends on OF select MMC_SDHCI_IO_ACCESSORS help This selects the Atmel SDMMC driver config MMC_SDHCI_OF_ESDHC tristate "SDHCI OF support for the Freescale eSDHC controller" depends on MMC_SDHCI_PLTFM depends on PPC || ARCH_MXC || ARCH_LAYERSCAPE select MMC_SDHCI_IO_ACCESSORS help This selects the Freescale eSDHC controller support. If you have a controller with this interface, say Y or M here. If unsure, say N. config MMC_SDHCI_OF_HLWD tristate "SDHCI OF support for the Nintendo Wii SDHCI controllers" depends on MMC_SDHCI_PLTFM depends on PPC select MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER help This selects the Secure Digital Host Controller Interface (SDHCI) found in the "Hollywood" chipset of the Nintendo Wii video game console. If you have a controller with this interface, say Y or M here. If unsure, say N. config MMC_SDHCI_CNS3XXX tristate "SDHCI support on the Cavium Networks CNS3xxx SoC" depends on ARCH_CNS3XXX depends on MMC_SDHCI_PLTFM help This selects the SDHCI support for CNS3xxx System-on-Chip devices. If you have a controller with this interface, say Y or M here. If unsure, say N. config MMC_SDHCI_ESDHC_IMX tristate "SDHCI support for the Freescale eSDHC/uSDHC i.MX controller" depends on ARCH_MXC depends on MMC_SDHCI_PLTFM select MMC_SDHCI_IO_ACCESSORS help This selects the Freescale eSDHC/uSDHC controller support found on i.MX25, i.MX35 i.MX5x and i.MX6x. If you have a controller with this interface, say Y or M here. If unsure, say N. config MMC_SDHCI_DOVE tristate "SDHCI support on Marvell's Dove SoC" depends on ARCH_DOVE || MACH_DOVE depends on MMC_SDHCI_PLTFM select MMC_SDHCI_IO_ACCESSORS help This selects the Secure Digital Host Controller Interface in Marvell's Dove SoC. If you have a controller with this interface, say Y or M here. If unsure, say N. config MMC_SDHCI_TEGRA tristate "SDHCI platform support for the Tegra SD/MMC Controller" depends on ARCH_TEGRA depends on MMC_SDHCI_PLTFM select MMC_SDHCI_IO_ACCESSORS help This selects the Tegra SD/MMC controller. If you have a Tegra platform with SD or MMC devices, say Y or M here. If unsure, say N. config MMC_SDHCI_S3C tristate "SDHCI support on Samsung S3C SoC" depends on MMC_SDHCI && PLAT_SAMSUNG help This selects the Secure Digital Host Controller Interface (SDHCI) often referrered to as the HSMMC block in some of the Samsung S3C range of SoC. If you have a controller with this interface, say Y or M here. If unsure, say N. config MMC_SDHCI_SIRF tristate "SDHCI support on CSR SiRFprimaII and SiRFmarco SoCs" depends on ARCH_SIRF depends on MMC_SDHCI_PLTFM select MMC_SDHCI_IO_ACCESSORS help This selects the SDHCI support for SiRF System-on-Chip devices. If you have a controller with this interface, say Y or M here. If unsure, say N. config MMC_SDHCI_PXAV3 tristate "Marvell MMP2 SD Host Controller support (PXAV3)" depends on CLKDEV_LOOKUP depends on MMC_SDHCI_PLTFM depends on ARCH_BERLIN || ARCH_MMP || ARCH_MVEBU || COMPILE_TEST default CPU_MMP2 help This selects the Marvell(R) PXAV3 SD Host Controller. If you have a MMP2 platform with SD Host Controller and a card slot, say Y or M here. If unsure, say N. config MMC_SDHCI_PXAV2 tristate "Marvell PXA9XX SD Host Controller support (PXAV2)" depends on CLKDEV_LOOKUP depends on MMC_SDHCI_PLTFM depends on ARCH_MMP || COMPILE_TEST default CPU_PXA910 help This selects the Marvell(R) PXAV2 SD Host Controller. If you have a PXA9XX platform with SD Host Controller and a card slot, say Y or M here. If unsure, say N. config MMC_SDHCI_SPEAR tristate "SDHCI support on ST SPEAr platform" depends on MMC_SDHCI && PLAT_SPEAR depends on OF help This selects the Secure Digital Host Controller Interface (SDHCI) often referrered to as the HSMMC block in some of the ST SPEAR range of SoC If you have a controller with this interface, say Y or M here. If unsure, say N. config MMC_SDHCI_S3C_DMA bool "DMA support on S3C SDHCI" depends on MMC_SDHCI_S3C help Enable DMA support on the Samsung S3C SDHCI glue. The DMA has proved to be problematic if the controller encounters certain errors, and thus should be treated with care. YMMV. config MMC_SDHCI_BCM_KONA tristate "SDHCI support on Broadcom KONA platform" depends on ARCH_BCM_MOBILE depends on MMC_SDHCI_PLTFM help This selects the Broadcom Kona Secure Digital Host Controller Interface(SDHCI) support. This is used in Broadcom mobile SoCs. If you have a controller with this interface, say Y or M here. config MMC_SDHCI_BCM2835 tristate "SDHCI platform support for the BCM2835 SD/MMC Controller" depends on ARCH_BCM2835 depends on MMC_SDHCI_PLTFM select MMC_SDHCI_IO_ACCESSORS help This selects the BCM2835 SD/MMC controller. If you have a BCM2835 platform with SD or MMC devices, say Y or M here. If unsure, say N. config MMC_SDHCI_F_SDH30 tristate "SDHCI support for Fujitsu Semiconductor F_SDH30" depends on MMC_SDHCI_PLTFM depends on OF help This selects the Secure Digital Host Controller Interface (SDHCI) Needed by some Fujitsu SoC for MMC / SD / SDIO support. If you have a controller with this interface, say Y or M here. If unsure, say N. config MMC_SDHCI_IPROC tristate "SDHCI platform support for the iProc SD/MMC Controller" depends on ARCH_BCM_IPROC || COMPILE_TEST depends on MMC_SDHCI_PLTFM default ARCH_BCM_IPROC select MMC_SDHCI_IO_ACCESSORS help This selects the iProc SD/MMC controller. If you have an IPROC platform with SD or MMC devices, say Y or M here. If unsure, say N. config MMC_MOXART tristate "MOXART SD/MMC Host Controller support" depends on ARCH_MOXART && MMC help This selects support for the MOXART SD/MMC Host Controller. MOXA provides one multi-functional card reader which can be found on some embedded hardware such as UC-7112-LX. If you have a controller with this interface, say Y here. config MMC_SDHCI_ST tristate "SDHCI support on STMicroelectronics SoC" depends on ARCH_STI depends on MMC_SDHCI_PLTFM select MMC_SDHCI_IO_ACCESSORS help This selects the Secure Digital Host Controller Interface in STMicroelectronics SoCs. If you have a controller with this interface, say Y or M here. If unsure, say N. config MMC_OMAP tristate "TI OMAP Multimedia Card Interface support" depends on ARCH_OMAP depends on TPS65010 || !MACH_OMAP_H2 help This selects the TI OMAP Multimedia card Interface. If you have an OMAP board with a Multimedia Card slot, say Y or M here. If unsure, say N. config MMC_OMAP_HS tristate "TI OMAP High Speed Multimedia Card Interface support" depends on HAS_DMA depends on ARCH_OMAP2PLUS || ARCH_KEYSTONE || COMPILE_TEST help This selects the TI OMAP High Speed Multimedia card Interface. If you have an omap2plus board with a Multimedia Card slot, say Y or M here. If unsure, say N. config MMC_WBSD tristate "Winbond W83L51xD SD/MMC Card Interface support" depends on ISA_DMA_API help This selects the Winbond(R) W83L51xD Secure digital and Multimedia card Interface. If you have a machine with a integrated W83L518D or W83L519D SD/MMC card reader, say Y or M here. If unsure, say N. config MMC_AU1X tristate "Alchemy AU1XX0 MMC Card Interface support" depends on MIPS_ALCHEMY help This selects the AMD Alchemy(R) Multimedia card interface. If you have a Alchemy platform with a MMC slot, say Y or M here. If unsure, say N. config MMC_ATMELMCI tristate "Atmel SD/MMC Driver (Multimedia Card Interface)" depends on AVR32 || ARCH_AT91 help This selects the Atmel Multimedia Card Interface driver. If you have an AT32 (AVR32) or AT91 platform with a Multimedia Card slot, say Y or M here. If unsure, say N. config MMC_SDHCI_MSM tristate "Qualcomm SDHCI Controller Support" depends on ARCH_QCOM || (ARM && COMPILE_TEST) depends on MMC_SDHCI_PLTFM help This selects the Secure Digital Host Controller Interface (SDHCI) support present in Qualcomm SOCs. The controller supports SD/MMC/SDIO devices. If you have a controller with this interface, say Y or M here. If unsure, say N. config MMC_MXC tristate "Freescale i.MX21/27/31 or MPC512x Multimedia Card support" depends on ARCH_MXC || PPC_MPC512x help This selects the Freescale i.MX21, i.MX27, i.MX31 or MPC512x Multimedia Card Interface. If you have an i.MX or MPC512x platform with a Multimedia Card slot, say Y or M here. If unsure, say N. config MMC_MXS tristate "Freescale MXS Multimedia Card Interface support" depends on ARCH_MXS && MXS_DMA help This selects the Freescale SSP MMC controller found on MXS based platforms like mx23/28. If unsure, say N. config MMC_TIFM_SD tristate "TI Flash Media MMC/SD Interface support" depends on PCI select TIFM_CORE help Say Y here if you want to be able to access MMC/SD cards with the Texas Instruments(R) Flash Media card reader, found in many laptops. This option 'selects' (turns on, enables) 'TIFM_CORE', but you probably also need appropriate card reader host adapter, such as 'Misc devices: TI Flash Media PCI74xx/PCI76xx host adapter support (TIFM_7XX1)'. To compile this driver as a module, choose M here: the module will be called tifm_sd. config MMC_MVSDIO tristate "Marvell MMC/SD/SDIO host driver" depends on PLAT_ORION ---help--- This selects the Marvell SDIO host driver. SDIO may currently be found on the Kirkwood 88F6281 and 88F6192 SoC controllers. To compile this driver as a module, choose M here: the module will be called mvsdio. config MMC_DAVINCI tristate "TI DAVINCI Multimedia Card Interface support" depends on ARCH_DAVINCI help This selects the TI DAVINCI Multimedia card Interface. If you have an DAVINCI board with a Multimedia Card slot, say Y or M here. If unsure, say N. config MMC_GOLDFISH tristate "goldfish qemu Multimedia Card Interface support" depends on HAS_DMA depends on GOLDFISH || COMPILE_TEST help This selects the Goldfish Multimedia card Interface emulation found on the Goldfish Android virtual device emulation. config MMC_SPI tristate "MMC/SD/SDIO over SPI" depends on SPI_MASTER && !HIGHMEM && HAS_DMA select CRC7 select CRC_ITU_T help Some systems access MMC/SD/SDIO cards using a SPI controller instead of using a "native" MMC/SD/SDIO controller. This has a disadvantage of being relatively high overhead, but a compensating advantage of working on many systems without dedicated MMC/SD/SDIO controllers. If unsure, or if your system has no SPI master driver, say N. config MMC_S3C tristate "Samsung S3C SD/MMC Card Interface support" depends on ARCH_S3C24XX depends on S3C24XX_DMAC help This selects a driver for the MCI interface found in Samsung's S3C2410, S3C2412, S3C2440, S3C2442 CPUs. If you have a board based on one of those and a MMC/SD slot, say Y or M here. If unsure, say N. config MMC_S3C_HW_SDIO_IRQ bool "Hardware support for SDIO IRQ" depends on MMC_S3C help Enable the hardware support for SDIO interrupts instead of using the generic polling code. choice prompt "Samsung S3C SD/MMC transfer code" depends on MMC_S3C config MMC_S3C_PIO bool "Use PIO transfers only" help Use PIO to transfer data between memory and the hardware. PIO is slower than DMA as it requires CPU instructions to move the data. This has been the traditional default for the S3C MCI driver. config MMC_S3C_DMA bool "Use DMA transfers only" help Use DMA to transfer data between memory and the hardare. Currently, the DMA support in this driver seems to not be working properly and needs to be debugged before this option is useful. endchoice config MMC_SDRICOH_CS tristate "MMC/SD driver for Ricoh Bay1Controllers" depends on PCI && PCMCIA help Say Y here if your Notebook reports a Ricoh Bay1Controller PCMCIA card whenever you insert a MMC or SD card into the card slot. To compile this driver as a module, choose M here: the module will be called sdricoh_cs. config MMC_TMIO_CORE tristate config MMC_TMIO tristate "Toshiba Mobile IO Controller (TMIO) MMC/SD function support" depends on MFD_TMIO || MFD_ASIC3 select MMC_TMIO_CORE help This provides support for the SD/MMC cell found in TC6393XB, T7L66XB and also HTC ASIC3 config MMC_SDHI tristate "SH-Mobile SDHI SD/SDIO controller support" depends on SUPERH || ARM depends on SUPERH || ARCH_SHMOBILE || COMPILE_TEST select MMC_TMIO_CORE help This provides support for the SDHI SD/SDIO controller found in SuperH and ARM SH-Mobile SoCs config GPIOMMC tristate "MMC/SD over GPIO-based SPI" depends on MMC && MMC_SPI && SPI_GPIO_OLD help This driver hooks up the mmc_spi and spi_gpio modules so that MMC/SD cards can be used on a GPIO based bus by bitbanging the SPI protocol in software. This driver provides a configfs interface to dynamically create and destroy GPIO-based MMC/SD card devices. It also provides a platform device interface API. See Documentation/gpiommc.txt for details. The module will be called gpiommc. If unsure, say N. config GPIOMMC_CONFIGFS bool depends on GPIOMMC && CONFIGFS_FS default y help This option automatically enables configfs support for gpiommc if configfs is available. config MMC_CB710 tristate "ENE CB710 MMC/SD Interface support" depends on PCI select CB710_CORE help This option enables support for MMC/SD part of ENE CB710/720 Flash memory card reader found in some laptops (ie. some versions of HP Compaq nx9500). This driver can also be built as a module. If so, the module will be called cb710-mmc. config MMC_VIA_SDMMC tristate "VIA SD/MMC Card Reader Driver" depends on PCI help This selects the VIA SD/MMC Card Reader driver, say Y or M here. VIA provides one multi-functional card reader which integrated into some motherboards manufactured by VIA. This card reader supports SD/MMC/SDHC. If you have a controller with this interface, say Y or M here. If unsure, say N. config SDH_BFIN tristate "Blackfin Secure Digital Host support" depends on (BF54x && !BF544) || (BF51x && !BF512) help If you say yes here you will get support for the Blackfin on-chip Secure Digital Host interface. This includes support for MMC and SD cards. To compile this driver as a module, choose M here: the module will be called bfin_sdh. If unsure, say N. config SDH_BFIN_MISSING_CMD_PULLUP_WORKAROUND bool "Blackfin EZkit Missing SDH_CMD Pull Up Resistor Workaround" depends on SDH_BFIN help If you say yes here SD-Cards may work on the EZkit. config MMC_DW tristate "Synopsys DesignWare Memory Card Interface" depends on HAS_DMA depends on ARC || ARM || ARM64 || MIPS || COMPILE_TEST help This selects support for the Synopsys DesignWare Mobile Storage IP block, this provides host support for SD and MMC interfaces, in both PIO, internal DMA mode and external DMA mode. config MMC_DW_PLTFM tristate "Synopsys Designware MCI Support as platform device" depends on MMC_DW default y help This selects the common helper functions support for Host Controller Interface based platform driver. Please select this option if the IP is present as a platform device. This is the common interface for the Synopsys Designware IP. If you have a controller with this interface, say Y or M here. If unsure, say Y. config MMC_DW_EXYNOS tristate "Exynos specific extensions for Synopsys DW Memory Card Interface" depends on MMC_DW select MMC_DW_PLTFM help This selects support for Samsung Exynos SoC specific extensions to the Synopsys DesignWare Memory Card Interface driver. Select this option for platforms based on Exynos4 and Exynos5 SoC's. config MMC_DW_K3 tristate "K3 specific extensions for Synopsys DW Memory Card Interface" depends on MMC_DW select MMC_DW_PLTFM help This selects support for Hisilicon K3 SoC specific extensions to the Synopsys DesignWare Memory Card Interface driver. Select this option for platforms based on Hisilicon K3 SoC's. config MMC_DW_PCI tristate "Synopsys Designware MCI support on PCI bus" depends on MMC_DW && PCI help This selects the PCI bus for the Synopsys Designware Mobile Storage IP. Select this option if the IP is present on PCI platform. If you have a controller with this interface, say Y or M here. If unsure, say N. config MMC_DW_ROCKCHIP tristate "Rockchip specific extensions for Synopsys DW Memory Card Interface" depends on MMC_DW && ARCH_ROCKCHIP select MMC_DW_PLTFM help This selects support for Rockchip SoC specific extensions to the Synopsys DesignWare Memory Card Interface driver. Select this option for platforms based on RK3066, RK3188 and RK3288 SoC's. config MMC_SH_MMCIF tristate "SuperH Internal MMCIF support" depends on MMC_BLOCK && HAS_DMA depends on SUPERH || ARCH_SHMOBILE || COMPILE_TEST help This selects the MMC Host Interface controller (MMCIF). This driver supports MMCIF in sh7724/sh7757/sh7372. config MMC_JZ4740 tristate "JZ4740 SD/Multimedia Card Interface support" depends on MACH_JZ4740 help This selects support for the SD/MMC controller on Ingenic JZ4740 SoCs. If you have a board based on such a SoC and with a SD/MMC slot, say Y or M here. config MMC_VUB300 tristate "VUB300 USB to SDIO/SD/MMC Host Controller support" depends on USB help This selects support for Elan Digital Systems' VUB300 chip. The VUB300 is a USB-SDIO Host Controller Interface chip that enables the host computer to use SDIO/SD/MMC cards via a USB 2.0 or USB 1.1 host. The VUB300 chip will be found in both physically separate USB to SDIO/SD/MMC adapters and embedded on some motherboards. The VUB300 chip supports SD and MMC memory cards in addition to single and multifunction SDIO cards. Some SDIO cards will need a firmware file to be loaded and sent to VUB300 chip in order to achieve better data throughput. Download these "Offload Pseudocode" from Elan Digital Systems' web-site http://www.elandigitalsystems.com/support/downloads.php and put them in /lib/firmware. Note that without these additional firmware files the VUB300 chip will still function, but not at the best obtainable data rate. To compile this mmc host controller driver as a module, choose M here: the module will be called vub300. If you have a computer with an embedded VUB300 chip or if you intend connecting a USB adapter based on a VUB300 chip say Y or M here. config MMC_USHC tristate "USB SD Host Controller (USHC) support" depends on USB help This selects support for USB SD Host Controllers based on the Cypress Astoria chip with firmware compliant with CSR's USB SD Host Controller specification (CS-118793-SP). CSR boards with this device include: USB<>SDIO (M1985v2), and Ultrasira. Note: These controllers only support SDIO cards and do not support MMC or SD memory cards. config MMC_WMT tristate "Wondermedia SD/MMC Host Controller support" depends on ARCH_VT8500 default y help This selects support for the SD/MMC Host Controller on Wondermedia WM8505/WM8650 based SoCs. To compile this driver as a module, choose M here: the module will be called wmt-sdmmc. config MMC_USDHI6ROL0 tristate "Renesas USDHI6ROL0 SD/SDIO Host Controller support" depends on HAS_DMA help This selects support for the Renesas USDHI6ROL0 SD/SDIO Host Controller config MMC_REALTEK_PCI tristate "Realtek PCI-E SD/MMC Card Interface Driver" depends on MFD_RTSX_PCI help Say Y here to include driver code to support SD/MMC card interface of Realtek PCI-E card reader config MMC_REALTEK_USB tristate "Realtek USB SD/MMC Card Interface Driver" depends on MFD_RTSX_USB help Say Y here to include driver code to support SD/MMC card interface of Realtek RTS5129/39 series card reader config MMC_SUNXI tristate "Allwinner sunxi SD/MMC Host Controller support" depends on ARCH_SUNXI help This selects support for the SD/MMC Host Controller on Allwinner sunxi SoCs. config MMC_TOSHIBA_PCI tristate "Toshiba Type A SD/MMC Card Interface Driver" depends on PCI help config MMC_MTK tristate "MediaTek SD/MMC Card Interface support" depends on HAS_DMA help This selects the MediaTek(R) Secure digital and Multimedia card Interface. If you have a machine with a integrated SD/MMC card reader, say Y or M here. This is needed if support for any SD/SDIO/MMC devices is required. If unsure, say N.