1 * Renesas Multi Media Card Interface (MMCIF) Controller
3 This file documents differences between the core properties in mmc.txt
4 and the properties used by the MMCIF device.
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-r8a7778" for the MMCIF found in r8a7778 SoCs
15 - "renesas,mmcif-r8a7790" for the MMCIF found in r8a7790 SoCs
16 - "renesas,mmcif-r8a7791" for the MMCIF found in r8a7791 SoCs
17 - "renesas,mmcif-r8a7793" for the MMCIF found in r8a7793 SoCs
18 - "renesas,mmcif-r8a7794" for the MMCIF found in r8a7794 SoCs
19 - "renesas,mmcif-sh73a0" for the MMCIF found in sh73a0 SoCs
21 - interrupts: Some SoCs have only 1 shared interrupt, while others have either
22 2 or 3 individual interrupts (error, int, card detect). Below is the number
23 of interrupts for each SoC:
24 1: r8a73a4, r8a7778, r8a7790, r8a7791, r8a7793, r8a7794
28 - clocks: reference to the functional clock
30 - dmas: reference to the DMA channels, one per channel name listed in the
32 - dma-names: must contain "tx" for the transmit DMA channel and "rx" for the
34 - max-frequency: Maximum operating clock frequency, driver uses default clock
35 frequency if it is not set.
38 Example: R8A7790 (R-Car H2) MMCIF0
40 mmcif0: mmc@ee200000 {
41 compatible = "renesas,mmcif-r8a7790", "renesas,sh-mmcif";
42 reg = <0 0xee200000 0 0x80>;
43 interrupts = <0 169 IRQ_TYPE_LEVEL_HIGH>;
44 clocks = <&mstp3_clks R8A7790_CLK_MMCIF0>;
45 dmas = <&dmac0 0xd1>, <&dmac0 0xd2>;
46 dma-names = "tx", "rx";
47 max-frequency = <97500000>;