projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 3f1c6ebf AV |
1 | MMC/SD/SDIO slot directly connected to a SPI bus |
| 2 | ||
| 3 | Required 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. | |
| 290293ed EH |
10 | |
| 11 | Optional properties: | |
| 12 | - gpios : may specify GPIOs in this order: Card-Detect GPIO, | |
| 7f217794 AB |
13 | Write-Protect GPIO. Note that this does not follow the |
| 14 | binding from mmc.txt, for historic reasons. | |
| 290293ed EH |
15 | - interrupts : the interrupt of a card detect interrupt. |
| 16 | - interrupt-parent : the phandle for the interrupt controller that | |
| 17 | services interrupts for this device. | |
| 3f1c6ebf AV |
18 | |
| 19 | Example: | |
| 20 | ||
| 21 | mmc-slot@0 { | |
| 22 | compatible = "fsl,mpc8323rdb-mmc-slot", | |
| 23 | "mmc-spi-slot"; | |
| 24 | reg = <0>; | |
| 25 | gpios = <&qe_pio_d 14 1 | |
| 26 | &qe_pio_d 15 0>; | |
| 27 | voltage-ranges = <3300 3300>; | |
| 28 | spi-max-frequency = <50000000>; | |
| 290293ed EH |
29 | interrupts = <42>; |
| 30 | interrupt-parent = <&PIC>; | |
| 3f1c6ebf | 31 | }; |