| Manjunathappa, Prakash | 7b43da4 | 2013-03-28 18:42:00 +0530 | [diff] [blame] | 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 | }; |