| Synopsys Designware Mobile Storage Host Controller extensions |
| used in Synopsys ARC devboards |
| |
| Required Properties: |
| |
| * compatible: should be - "snps,dw-mshc". |
| * bus-width: number of data lines connected to the controller. |
| * clocks: from common clock binding: handle to biu and ciu clocks for the |
| bus interface unit clock and the card interface unit clock. |
| * clock-names: from common clock binding: Shall be "biu" and "ciu". |
| |
| Optional properties: |
| |
| * fifo-depth: The maximum size of the tx/rx fifo's. If this property is not |
| specified, the default value of the fifo size is determined from the |
| controller registers. |
| * fifo-mode: Don't use DMA. |
| * max-frequency: Maximum operating clock frequency, driver uses 'ciu' clock |
| frequency if it is not set. |
| |
| Example: |
| |
| mmc0@f000a000 { |
| compatible = "snps,dw-mshc"; |
| reg = <0xf000a000 0x400>; |
| |
| bus-width = <4>; |
| fifo-depth = <256>; |
| clocks = <&mmcclk_biu>, <&mmcclk_ciu>; |
| clock-names = "biu", "ciu"; |
| max-frequency = <25000000>; |
| }; |
