projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b4c27763 LP |
1 | * Renesas Multi Media Card Interface (MMCIF) Controller |
| 2 | ||
| 3 | This file documents differences between the core properties in mmc.txt | |
| 4 | and the properties used by the MMCIF device. | |
| 5 | ||
| 6 | ||
| 7 | Required properties: | |
| 8 | ||
| 76d63c2b SS |
9 | - compatible: should be "renesas,mmcif-<soctype>", "renesas,sh-mmcif" as a |
| 10 | fallback. Examples with <soctype> are: | |
| b4c27763 LP |
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 | |
| 3373cbf0 | 14 | - "renesas,mmcif-r8a7793" for the MMCIF found in r8a7793 SoCs |
| a599579e | 15 | - "renesas,mmcif-r8a7794" for the MMCIF found in r8a7794 SoCs |
| b4c27763 LP |
16 | |
| 17 | - clocks: reference to the functional clock | |
| 18 | ||
| 19 | - dmas: reference to the DMA channels, one per channel name listed in the | |
| 20 | dma-names property. | |
| 21 | - dma-names: must contain "tx" for the transmit DMA channel and "rx" for the | |
| 22 | receive DMA channel. | |
| 89d49a70 KM |
23 | - max-frequency: Maximum operating clock frequency, driver uses default clock |
| 24 | frequency if it is not set. | |
| b4c27763 LP |
25 | |
| 26 | ||
| 27 | Example: R8A7790 (R-Car H2) MMCIF0 | |
| 28 | ||
| 29 | mmcif0: mmc@ee200000 { | |
| 30 | compatible = "renesas,mmcif-r8a7790", "renesas,sh-mmcif"; | |
| 31 | reg = <0 0xee200000 0 0x80>; | |
| 32 | interrupts = <0 169 IRQ_TYPE_LEVEL_HIGH>; | |
| 33 | clocks = <&mstp3_clks R8A7790_CLK_MMCIF0>; | |
| 34 | dmas = <&dmac0 0xd1>, <&dmac0 0xd2>; | |
| 35 | dma-names = "tx", "rx"; | |
| 89d49a70 | 36 | max-frequency = <97500000>; |
| b4c27763 | 37 | }; |