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- 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>;
- };
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