1 * Atmel High Speed MultiMedia Card Interface
3 This controller on atmel products provides an interface for MMC, SD and SDIO
6 This file documents differences between the core properties described
7 by mmc.txt and the properties used by the atmel-mci driver.
12 - compatible: should be "atmel,hsmci"
13 - #address-cells: should be one. The cell is the slot id.
14 - #size-cells: should be zero.
15 - at least one slot node
16 - clock-names: tuple listing input clock names.
17 Required elements: "mci_clk"
18 - clocks: phandles to input clocks.
20 The node contains child nodes for each slot that the platform uses
25 compatible = "atmel,hsmci";
26 reg = <0xf0008000 0x600>;
30 clock-names = "mci_clk";
33 [ child node definitions...]
39 - reg: should contain the slot id.
40 - bus-width: number of data lines connected to the controller
43 - cd-gpios: specify GPIOs for card detection
44 - cd-inverted: invert the value of external card detect gpio line
45 - wp-gpios: specify GPIOs for write protection
52 cd-gpios = <&pioD 15 0>
56 Example full MCI node:
58 compatible = "atmel,hsmci";
59 reg = <0xf0008000 0x600>;
66 cd-gpios = <&pioD 15 0>