/Documentation/powerpc/dts-bindings/mmc-spi-slot.txt
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Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
1MMC/SD/SDIO slot directly connected to a SPI bus
2
3Required properties:
4- compatible : should be "mmc-spi-slot".
5- reg : should specify SPI address (chip-select number).
6- spi-max-frequency : maximum frequency for this device (Hz).
7- voltage-ranges : two cells are required, first cell specifies minimum
8 slot voltage (mV), second cell specifies maximum slot voltage (mV).
9 Several ranges could be specified.
10- gpios : (optional) may specify GPIOs in this order: Card-Detect GPIO,
11 Write-Protect GPIO.
12
13Example:
14
15 mmc-slot@0 {
16 compatible = "fsl,mpc8323rdb-mmc-slot",
17 "mmc-spi-slot";
18 reg = <0>;
19 gpios = <&qe_pio_d 14 1
20 &qe_pio_d 15 0>;
21 voltage-ranges = <3300 3300>;
22 spi-max-frequency = <50000000>;
23 };