18c2ecf20Sopenharmony_ci* Renesas Multi Media Card Interface (MMCIF) Controller 28c2ecf20Sopenharmony_ci 38c2ecf20Sopenharmony_ciThis file documents differences between the core properties in mmc.txt 48c2ecf20Sopenharmony_ciand the properties used by the MMCIF device. 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_ci 78c2ecf20Sopenharmony_ciRequired properties: 88c2ecf20Sopenharmony_ci 98c2ecf20Sopenharmony_ci- compatible: should be "renesas,mmcif-<soctype>", "renesas,sh-mmcif" as a 108c2ecf20Sopenharmony_ci fallback. Examples with <soctype> are: 118c2ecf20Sopenharmony_ci - "renesas,mmcif-r7s72100" for the MMCIF found in r7s72100 SoCs 128c2ecf20Sopenharmony_ci - "renesas,mmcif-r8a73a4" for the MMCIF found in r8a73a4 SoCs 138c2ecf20Sopenharmony_ci - "renesas,mmcif-r8a7740" for the MMCIF found in r8a7740 SoCs 148c2ecf20Sopenharmony_ci - "renesas,mmcif-r8a7742" for the MMCIF found in r8a7742 SoCs 158c2ecf20Sopenharmony_ci - "renesas,mmcif-r8a7743" for the MMCIF found in r8a7743 SoCs 168c2ecf20Sopenharmony_ci - "renesas,mmcif-r8a7744" for the MMCIF found in r8a7744 SoCs 178c2ecf20Sopenharmony_ci - "renesas,mmcif-r8a7745" for the MMCIF found in r8a7745 SoCs 188c2ecf20Sopenharmony_ci - "renesas,mmcif-r8a7778" for the MMCIF found in r8a7778 SoCs 198c2ecf20Sopenharmony_ci - "renesas,mmcif-r8a7790" for the MMCIF found in r8a7790 SoCs 208c2ecf20Sopenharmony_ci - "renesas,mmcif-r8a7791" for the MMCIF found in r8a7791 SoCs 218c2ecf20Sopenharmony_ci - "renesas,mmcif-r8a7793" for the MMCIF found in r8a7793 SoCs 228c2ecf20Sopenharmony_ci - "renesas,mmcif-r8a7794" for the MMCIF found in r8a7794 SoCs 238c2ecf20Sopenharmony_ci - "renesas,mmcif-sh73a0" for the MMCIF found in sh73a0 SoCs 248c2ecf20Sopenharmony_ci 258c2ecf20Sopenharmony_ci- interrupts: Some SoCs have only 1 shared interrupt, while others have either 268c2ecf20Sopenharmony_ci 2 or 3 individual interrupts (error, int, card detect). Below is the number 278c2ecf20Sopenharmony_ci of interrupts for each SoC: 288c2ecf20Sopenharmony_ci 1: r8a73a4, r8a7742, r8a7743, r8a7744, r8a7745, r8a7778, r8a7790, r8a7791, 298c2ecf20Sopenharmony_ci r8a7793, r8a7794 308c2ecf20Sopenharmony_ci 2: r8a7740, sh73a0 318c2ecf20Sopenharmony_ci 3: r7s72100 328c2ecf20Sopenharmony_ci 338c2ecf20Sopenharmony_ci- clocks: reference to the functional clock 348c2ecf20Sopenharmony_ci 358c2ecf20Sopenharmony_ci- dmas: reference to the DMA channels, one per channel name listed in the 368c2ecf20Sopenharmony_ci dma-names property. 378c2ecf20Sopenharmony_ci- dma-names: must contain "tx" for the transmit DMA channel and "rx" for the 388c2ecf20Sopenharmony_ci receive DMA channel. 398c2ecf20Sopenharmony_ci- max-frequency: Maximum operating clock frequency, driver uses default clock 408c2ecf20Sopenharmony_ci frequency if it is not set. 418c2ecf20Sopenharmony_ci 428c2ecf20Sopenharmony_ci 438c2ecf20Sopenharmony_ciExample: R8A7790 (R-Car H2) MMCIF0 448c2ecf20Sopenharmony_ci 458c2ecf20Sopenharmony_ci mmcif0: mmc@ee200000 { 468c2ecf20Sopenharmony_ci compatible = "renesas,mmcif-r8a7790", "renesas,sh-mmcif"; 478c2ecf20Sopenharmony_ci reg = <0 0xee200000 0 0x80>; 488c2ecf20Sopenharmony_ci interrupts = <0 169 IRQ_TYPE_LEVEL_HIGH>; 498c2ecf20Sopenharmony_ci clocks = <&mstp3_clks R8A7790_CLK_MMCIF0>; 508c2ecf20Sopenharmony_ci dmas = <&dmac0 0xd1>, <&dmac0 0xd2>; 518c2ecf20Sopenharmony_ci dma-names = "tx", "rx"; 528c2ecf20Sopenharmony_ci max-frequency = <97500000>; 538c2ecf20Sopenharmony_ci }; 54