mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 20:23:57 +08:00
31 lines
949 B
Plaintext
31 lines
949 B
Plaintext
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>;
|
|
};
|