123456789101112131415161718192021222324252627282930313233343536373839404142 |
- * 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>;
- };
|