mirror of https://gitee.com/openkylin/linux.git
34 lines
1.0 KiB
Plaintext
34 lines
1.0 KiB
Plaintext
|
* TI Highspeed MMC host controller for DaVinci
|
||
|
|
|
||
|
|
The Highspeed MMC Host Controller on TI DaVinci family
|
||
|
|
provides an interface for MMC, SD and SDIO types of memory cards.
|
||
|
|
|
||
|
|
This file documents the properties used by the davinci_mmc driver.
|
||
|
|
|
||
|
|
Required properties:
|
||
|
|
- compatible:
|
||
|
|
Should be "ti,da830-mmc": for da830, da850, dm365
|
||
|
|
Should be "ti,dm355-mmc": for dm355, dm644x
|
||
|
|
|
||
|
|
Optional properties:
|
||
|
|
- bus-width: Number of data lines, can be <1>, <4>, or <8>, default <1>
|
||
|
|
- max-frequency: Maximum operating clock frequency, default 25MHz.
|
||
|
|
- dmas: List of DMA specifiers with the controller specific format
|
||
|
|
as described in the generic DMA client binding. A tx and rx
|
||
|
|
specifier is required.
|
||
|
|
- dma-names: RX and TX DMA request names. These strings correspond
|
||
|
|
1:1 with the DMA specifiers listed in dmas.
|
||
|
|
|
||
|
|
Example:
|
||
|
|
mmc0: mmc@1c40000 {
|
||
|
|
compatible = "ti,da830-mmc",
|
||
|
|
reg = <0x40000 0x1000>;
|
||
|
|
interrupts = <16>;
|
||
|
|
status = "okay";
|
||
|
|
bus-width = <4>;
|
||
|
|
max-frequency = <50000000>;
|
||
|
|
dmas = <&edma 16
|
||
|
|
&edma 17>;
|
||
|
|
dma-names = "rx", "tx";
|
||
|
|
};
|