| * Samsung's S3C24XX MMC/SD/SDIO controller device tree bindings |
| |
| Samsung's S3C24XX MMC/SD/SDIO controller is used as a connectivity interface |
| with external MMC, SD and SDIO storage mediums. |
| |
| This file documents differences between the core mmc properties described by |
| mmc.txt and the properties used by the Samsung S3C24XX MMC/SD/SDIO controller |
| implementation. |
| |
| Required SoC Specific Properties: |
| - compatible: should be one of the following |
| - "samsung,s3c2410-sdi": for controllers compatible with s3c2410 |
| - "samsung,s3c2412-sdi": for controllers compatible with s3c2412 |
| - "samsung,s3c2440-sdi": for controllers compatible with s3c2440 |
| - reg: register location and length |
| - interrupts: mmc controller interrupt |
| - clocks: Should reference the controller clock |
| - clock-names: Should contain "sdi" |
| |
| Required Board Specific Properties: |
| - pinctrl-0: Should specify pin control groups used for this controller. |
| - pinctrl-names: Should contain only one value - "default". |
| |
| Optional Properties: |
| - bus-width: number of data lines (see mmc.txt) |
| - cd-gpios: gpio for card detection (see mmc.txt) |
| - wp-gpios: gpio for write protection (see mmc.txt) |
| |
| Example: |
| |
| mmc0: mmc@5a000000 { |
| compatible = "samsung,s3c2440-sdi"; |
| pinctrl-names = "default"; |
| pinctrl-0 = <&sdi_pins>; |
| reg = <0x5a000000 0x100000>; |
| interrupts = <0 0 21 3>; |
| clocks = <&clocks PCLK_SDI>; |
| clock-names = "sdi"; |
| bus-width = <4>; |
| cd-gpios = <&gpg 8 GPIO_ACTIVE_LOW>; |
| wp-gpios = <&gph 8 GPIO_ACTIVE_LOW>; |
| }; |
