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-rw-r--r--Documentation/devicetree/bindings/mmc/renesas,mmcif.txt32
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1* Renesas Multi Media Card Interface (MMCIF) Controller
2
3This file documents differences between the core properties in mmc.txt
4and the properties used by the MMCIF device.
5
6
7Required properties:
8
9- compatible: must contain one of the following
10 - "renesas,mmcif-r8a7740" for the MMCIF found in r8a7740 SoCs
11 - "renesas,mmcif-r8a7790" for the MMCIF found in r8a7790 SoCs
12 - "renesas,mmcif-r8a7791" for the MMCIF found in r8a7791 SoCs
13 - "renesas,sh-mmcif" for the generic MMCIF
14
15- clocks: reference to the functional clock
16
17- dmas: reference to the DMA channels, one per channel name listed in the
18 dma-names property.
19- dma-names: must contain "tx" for the transmit DMA channel and "rx" for the
20 receive DMA channel.
21
22
23Example: R8A7790 (R-Car H2) MMCIF0
24
25 mmcif0: mmc@ee200000 {
26 compatible = "renesas,mmcif-r8a7790", "renesas,sh-mmcif";
27 reg = <0 0xee200000 0 0x80>;
28 interrupts = <0 169 IRQ_TYPE_LEVEL_HIGH>;
29 clocks = <&mstp3_clks R8A7790_CLK_MMCIF0>;
30 dmas = <&dmac0 0xd1>, <&dmac0 0xd2>;
31 dma-names = "tx", "rx";
32 };