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Diffstat (limited to 'Documentation/devicetree/bindings/mmc/mmc-spi-slot.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/mmc/mmc-spi-slot.txt | 30 |
1 files changed, 30 insertions, 0 deletions
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 000000000000..89a0084df2f7 --- /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>; + }; |