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: should be "renesas,mmcif-<soctype>", "renesas,sh-mmcif" as a
10  fallback. Examples with <soctype> are:
11	- "renesas,mmcif-r7s72100" for the MMCIF found in r7s72100 SoCs
12	- "renesas,mmcif-r8a73a4" for the MMCIF found in r8a73a4 SoCs
13	- "renesas,mmcif-r8a7740" for the MMCIF found in r8a7740 SoCs
14	- "renesas,mmcif-r8a7743" for the MMCIF found in r8a7743 SoCs
15	- "renesas,mmcif-r8a7744" for the MMCIF found in r8a7744 SoCs
16	- "renesas,mmcif-r8a7745" for the MMCIF found in r8a7745 SoCs
17	- "renesas,mmcif-r8a7778" for the MMCIF found in r8a7778 SoCs
18	- "renesas,mmcif-r8a7790" for the MMCIF found in r8a7790 SoCs
19	- "renesas,mmcif-r8a7791" for the MMCIF found in r8a7791 SoCs
20	- "renesas,mmcif-r8a7793" for the MMCIF found in r8a7793 SoCs
21	- "renesas,mmcif-r8a7794" for the MMCIF found in r8a7794 SoCs
22	- "renesas,mmcif-sh73a0" for the MMCIF found in sh73a0 SoCs
23
24- interrupts: Some SoCs have only 1 shared interrupt, while others have either
25  2 or 3 individual interrupts (error, int, card detect). Below is the number
26  of interrupts for each SoC:
27    1: r8a73a4, r8a7743, r8a7744, r8a7745, r8a7778, r8a7790, r8a7791, r8a7793,
28       r8a7794
29    2: r8a7740, sh73a0
30    3: r7s72100
31
32- clocks: reference to the functional clock
33
34- dmas: reference to the DMA channels, one per channel name listed in the
35  dma-names property.
36- dma-names: must contain "tx" for the transmit DMA channel and "rx" for the
37  receive DMA channel.
38- max-frequency: Maximum operating clock frequency, driver uses default clock
39  frequency if it is not set.
40
41
42Example: R8A7790 (R-Car H2) MMCIF0
43
44	mmcif0: mmc@ee200000 {
45		compatible = "renesas,mmcif-r8a7790", "renesas,sh-mmcif";
46		reg = <0 0xee200000 0 0x80>;
47		interrupts = <0 169 IRQ_TYPE_LEVEL_HIGH>;
48		clocks = <&mstp3_clks R8A7790_CLK_MMCIF0>;
49		dmas = <&dmac0 0xd1>, <&dmac0 0xd2>;
50		dma-names = "tx", "rx";
51		max-frequency = <97500000>;
52	};
53