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-r8a7740" for the MMCIF found in r8a7740 SoCs 12 - "renesas,mmcif-r8a7790" for the MMCIF found in r8a7790 SoCs 13 - "renesas,mmcif-r8a7791" for the MMCIF found in r8a7791 SoCs 14 - "renesas,mmcif-r8a7794" for the MMCIF found in r8a7794 SoCs 15 16- clocks: reference to the functional clock 17 18- dmas: reference to the DMA channels, one per channel name listed in the 19 dma-names property. 20- dma-names: must contain "tx" for the transmit DMA channel and "rx" for the 21 receive DMA channel. 22- max-frequency: Maximum operating clock frequency, driver uses default clock 23 frequency if it is not set. 24 25 26Example: R8A7790 (R-Car H2) MMCIF0 27 28 mmcif0: mmc@ee200000 { 29 compatible = "renesas,mmcif-r8a7790", "renesas,sh-mmcif"; 30 reg = <0 0xee200000 0 0x80>; 31 interrupts = <0 169 IRQ_TYPE_LEVEL_HIGH>; 32 clocks = <&mstp3_clks R8A7790_CLK_MMCIF0>; 33 dmas = <&dmac0 0xd1>, <&dmac0 0xd2>; 34 dma-names = "tx", "rx"; 35 max-frequency = <97500000>; 36 }; 37