projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 8dde8c46 LJ |
1 | * ARM PrimeCell MultiMedia Card Interface (MMCI) PL180/1 |
| 2 | ||
| 4efafee0 | 3 | The ARM PrimeCell MMCI PL180 and PL181 provides an interface for |
| 8dde8c46 LJ |
4 | reading and writing to MultiMedia and SD cards alike. |
| 5 | ||
| 4efafee0 | 6 | This file documents differences between the core properties described |
| ae94cafe UH |
7 | by mmc.txt and the properties used by the mmci driver. Using "st" as |
| 8 | the prefix for a property, indicates support by the ST Micro variant. | |
| 4efafee0 | 9 | |
| 8dde8c46 LJ |
10 | Required properties: |
| 11 | - compatible : contains "arm,pl18x", "arm,primecell". | |
| dc03294a UH |
12 | - vmmc-supply : phandle to the regulator device tree node, mentioned |
| 13 | as the VCC/VDD supply in the eMMC/SD specs. | |
| 8dde8c46 LJ |
14 | |
| 15 | Optional properties: | |
| dc03294a UH |
16 | - arm,primecell-periphid : contains the PrimeCell Peripheral ID, it overrides |
| 17 | the ID provided by the HW | |
| 18 | - mmc-cap-mmc-highspeed : indicates whether MMC is high speed capable. | |
| 19 | - mmc-cap-sd-highspeed : indicates whether SD is high speed capable. | |
| 20 | - vqmmc-supply : phandle to the regulator device tree node, mentioned | |
| 21 | as the VCCQ/VDD_IO supply in the eMMC/SD specs. | |
| ae94cafe UH |
22 | - st,sig-dir-dat0 : bus signal direction pin used for DAT[0]. |
| 23 | - st,sig-dir-dat2 : bus signal direction pin used for DAT[2]. | |
| 24 | - st,sig-dir-dat31 : bus signal direction pin used for DAT[3] and DAT[1]. | |
| 25 | - st,sig-dir-dat74 : bus signal direction pin used for DAT[4] to DAT[7]. | |
| 26 | - st,sig-dir-cmd : cmd signal direction pin used for CMD. | |
| 1a7e99c1 | 27 | - st,sig-pin-fbclk : feedback clock signal pin used. |
| dc03294a UH |
28 | |
| 29 | Example: | |
| 30 | ||
| 31 | sdi0_per1@80126000 { | |
| 32 | compatible = "arm,pl18x", "arm,primecell"; | |
| 33 | reg = <0x80126000 0x1000>; | |
| 34 | interrupts = <0 60 IRQ_TYPE_LEVEL_HIGH>; | |
| 35 | ||
| 36 | dmas = <&dma 29 0 0x2>, /* Logical - DevToMem */ | |
| 37 | <&dma 29 0 0x0>; /* Logical - MemToDev */ | |
| 38 | dma-names = "rx", "tx"; | |
| 39 | ||
| 40 | clocks = <&prcc_kclk 1 5>, <&prcc_pclk 1 5>; | |
| 41 | clock-names = "sdi", "apb_pclk"; | |
| 42 | ||
| 43 | max-frequency = <100000000>; | |
| 44 | bus-width = <4>; | |
| 45 | mmc-cap-sd-highspeed; | |
| 46 | mmc-cap-mmc-highspeed; | |
| 47 | cd-gpios = <&gpio2 31 0x4>; // 95 | |
| ae94cafe UH |
48 | st,sig-dir-dat0; |
| 49 | st,sig-dir-dat2; | |
| 50 | st,sig-dir-cmd; | |
| 1a7e99c1 | 51 | st,sig-pin-fbclk; |
| dc03294a UH |
52 | |
| 53 | vmmc-supply = <&ab8500_ldo_aux3_reg>; | |
| 54 | vqmmc-supply = <&vmmci>; | |
| 55 | ||
| 56 | pinctrl-names = "default", "sleep"; | |
| 57 | pinctrl-0 = <&sdi0_default_mode>; | |
| 58 | pinctrl-1 = <&sdi0_sleep_mode>; | |
| 59 | }; |