xref: /freebsd/sys/contrib/device-tree/Bindings/mmc/davinci_mmc.txt (revision 924226fba12cc9a228c73b956e1b7fa24c60b055)
1* TI Highspeed MMC host controller for DaVinci
2
3The Highspeed MMC Host Controller on TI DaVinci family
4provides an interface for MMC, SD and SDIO types of memory cards.
5
6This file documents the properties used by the davinci_mmc driver.
7
8Required properties:
9- compatible:
10 Should be "ti,da830-mmc": for da830, da850, dm365
11 Should be "ti,dm355-mmc": for dm355, dm644x
12
13Optional properties:
14- bus-width: Number of data lines, can be <1>, <4>, or <8>, default <1>
15- max-frequency: Maximum operating clock frequency, default 25MHz.
16- dmas: List of DMA specifiers with the controller specific format
17	as described in the generic DMA client binding. A tx and rx
18	specifier is required.
19- dma-names: RX and TX  DMA request names. These strings correspond
20	1:1 with the DMA specifiers listed in dmas.
21
22Example:
23mmc0: mmc@1c40000 {
24	compatible = "ti,da830-mmc",
25	reg = <0x40000 0x1000>;
26	interrupts = <16>;
27	bus-width = <4>;
28	max-frequency = <50000000>;
29	dmas = <&edma 16
30		&edma 17>;
31	dma-names = "rx", "tx";
32};
33