Commit | Line | Data |
---|---|---|
7b43da4c MP |
1 | * TI Highspeed MMC host controller for DaVinci |
2 | ||
3 | The Highspeed MMC Host Controller on TI DaVinci family | |
4 | provides an interface for MMC, SD and SDIO types of memory cards. | |
5 | ||
6 | This file documents the properties used by the davinci_mmc driver. | |
7 | ||
8 | Required properties: | |
9 | - compatible: | |
10 | Should be "ti,da830-mmc": for da830, da850, dm365 | |
11 | Should be "ti,dm355-mmc": for dm355, dm644x | |
12 | ||
13 | Optional 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 | ||
22 | Example: | |
23 | mmc0: mmc@1c40000 { | |
24 | compatible = "ti,da830-mmc", | |
25 | reg = <0x40000 0x1000>; | |
26 | interrupts = <16>; | |
27 | status = "okay"; | |
28 | bus-width = <4>; | |
29 | max-frequency = <50000000>; | |
30 | dmas = <&edma 16 | |
31 | &edma 17>; | |
32 | dma-names = "rx", "tx"; | |
33 | }; |