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Diffstat (limited to 'Documentation/devicetree/bindings/mmc')
5 files changed, 153 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mmc/fsl-esdhc.txt b/Documentation/devicetree/bindings/mmc/fsl-esdhc.txt new file mode 100644 index 00000000..64bcb8be --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/fsl-esdhc.txt @@ -0,0 +1,29 @@ +* Freescale Enhanced Secure Digital Host Controller (eSDHC) + +The Enhanced Secure Digital Host Controller provides an interface +for MMC, SD, and SDIO types of memory cards. + +Required properties: + - compatible : should be + "fsl,<chip>-esdhc", "fsl,esdhc" + - reg : should contain eSDHC registers location and length. + - interrupts : should contain eSDHC interrupt. + - interrupt-parent : interrupt source phandle. + - clock-frequency : specifies eSDHC base clock frequency. + - sdhci,wp-inverted : (optional) specifies that eSDHC controller + reports inverted write-protect state; + - sdhci,1-bit-only : (optional) specifies that a controller can + only handle 1-bit data transfers. + - sdhci,auto-cmd12: (optional) specifies that a controller can + only handle auto CMD12. + +Example: + +sdhci@2e000 { + compatible = "fsl,mpc8378-esdhc", "fsl,esdhc"; + reg = <0x2e000 0x1000>; + interrupts = <42 0x8>; + interrupt-parent = <&ipic>; + /* Filled in by U-Boot */ + clock-frequency = <0>; +}; diff --git a/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt b/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt new file mode 100644 index 00000000..ab22fe6e --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt @@ -0,0 +1,34 @@ +* Freescale Enhanced Secure Digital Host Controller (eSDHC) for i.MX + +The Enhanced Secure Digital Host Controller on Freescale i.MX family +provides an interface for MMC, SD, and SDIO types of memory cards. + +Required properties: +- compatible : Should be "fsl,<chip>-esdhc" +- reg : Should contain eSDHC registers location and length +- interrupts : Should contain eSDHC interrupt + +Optional properties: +- fsl,card-wired : Indicate the card is wired to host permanently +- fsl,cd-internal : Indicate to use controller internal card detection +- fsl,wp-internal : Indicate to use controller internal write protection +- cd-gpios : Specify GPIOs for card detection +- wp-gpios : Specify GPIOs for write protection + +Examples: + +esdhc@70004000 { + compatible = "fsl,imx51-esdhc"; + reg = <0x70004000 0x4000>; + interrupts = <1>; + fsl,cd-internal; + fsl,wp-internal; +}; + +esdhc@70008000 { + compatible = "fsl,imx51-esdhc"; + reg = <0x70008000 0x4000>; + interrupts = <2>; + cd-gpios = <&gpio0 6 0>; /* GPIO1_6 */ + wp-gpios = <&gpio0 5 0>; /* GPIO1_5 */ +}; diff --git a/Documentation/devicetree/bindings/mmc/mmc-spi-slot.txt b/Documentation/devicetree/bindings/mmc/mmc-spi-slot.txt new file mode 100644 index 00000000..89a0084d --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/mmc-spi-slot.txt @@ -0,0 +1,30 @@ +MMC/SD/SDIO slot directly connected to a SPI bus + +Required properties: +- compatible : should be "mmc-spi-slot". +- reg : should specify SPI address (chip-select number). +- spi-max-frequency : maximum frequency for this device (Hz). +- voltage-ranges : two cells are required, first cell specifies minimum + slot voltage (mV), second cell specifies maximum slot voltage (mV). + Several ranges could be specified. + +Optional properties: +- gpios : may specify GPIOs in this order: Card-Detect GPIO, + Write-Protect GPIO. +- interrupts : the interrupt of a card detect interrupt. +- interrupt-parent : the phandle for the interrupt controller that + services interrupts for this device. + +Example: + + mmc-slot@0 { + compatible = "fsl,mpc8323rdb-mmc-slot", + "mmc-spi-slot"; + reg = <0>; + gpios = <&qe_pio_d 14 1 + &qe_pio_d 15 0>; + voltage-ranges = <3300 3300>; + spi-max-frequency = <50000000>; + interrupts = <42>; + interrupt-parent = <&PIC>; + }; diff --git a/Documentation/devicetree/bindings/mmc/nvidia-sdhci.txt b/Documentation/devicetree/bindings/mmc/nvidia-sdhci.txt new file mode 100644 index 00000000..7e511546 --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/nvidia-sdhci.txt @@ -0,0 +1,27 @@ +* NVIDIA Tegra Secure Digital Host Controller + +This controller on Tegra family SoCs provides an interface for MMC, SD, +and SDIO types of memory cards. + +Required properties: +- compatible : Should be "nvidia,<chip>-sdhci" +- reg : Should contain SD/MMC registers location and length +- interrupts : Should contain SD/MMC interrupt + +Optional properties: +- cd-gpios : Specify GPIOs for card detection +- wp-gpios : Specify GPIOs for write protection +- power-gpios : Specify GPIOs for power control +- support-8bit : Boolean, indicates if 8-bit mode should be used. + +Example: + +sdhci@c8000200 { + compatible = "nvidia,tegra20-sdhci"; + reg = <0xc8000200 0x200>; + interrupts = <47>; + cd-gpios = <&gpio 69 0>; /* gpio PI5 */ + wp-gpios = <&gpio 57 0>; /* gpio PH1 */ + power-gpios = <&gpio 155 0>; /* gpio PT3 */ + support-8bit; +}; diff --git a/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt b/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt new file mode 100644 index 00000000..dbd4368a --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt @@ -0,0 +1,33 @@ +* TI Highspeed MMC host controller for OMAP + +The Highspeed MMC Host Controller on TI OMAP family +provides an interface for MMC, SD, and SDIO types of memory cards. + +Required properties: +- compatible: + Should be "ti,omap2-hsmmc", for OMAP2 controllers + Should be "ti,omap3-hsmmc", for OMAP3 controllers + Should be "ti,omap4-hsmmc", for OMAP4 controllers +- ti,hwmods: Must be "mmc<n>", n is controller instance starting 1 +- reg : should contain hsmmc registers location and length + +Optional properties: +ti,dual-volt: boolean, supports dual voltage cards +<supply-name>-supply: phandle to the regulator device tree node +"supply-name" examples are "vmmc", "vmmc_aux" etc +ti,bus-width: Number of data lines, default assumed is 1 if the property is missing. +cd-gpios: GPIOs for card detection +wp-gpios: GPIOs for write protection +ti,non-removable: non-removable slot (like eMMC) +ti,needs-special-reset: Requires a special softreset sequence + +Example: + mmc1: mmc@0x4809c000 { + compatible = "ti,omap4-hsmmc"; + reg = <0x4809c000 0x400>; + ti,hwmods = "mmc1"; + ti,dual-volt; + ti,bus-width = <4>; + vmmc-supply = <&vmmc>; /* phandle to regulator node */ + ti,non-removable; + }; |