You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
42 lines
1.4 KiB
42 lines
1.4 KiB
* 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>;
|
|
};
|
|
|