Kernel-4.18.0-80.el8_jz4740

• Ingenic JZ47xx MMC controllers

This file documents the device tree properties used for the MMC controller in
Ingenic JZ4740/JZ4780 SoCs. These are in addition to the core MMC properties
described in mmc.txt.

Required properties:

• compatible: Should be one of the following:
  • “ingenic,jz4740-mmc” for the JZ4740
  • “ingenic,jz4780-mmc” for the JZ4780
• reg: Should contain the MMC controller registers location and length.
• interrupts: Should contain the interrupt specifier of the MMC controller.
• clocks: Clock for the MMC controller.

Optional properties:

• dmas: List of DMA specifiers with the controller specific format

    as described in the generic DMA client binding. A tx and rx
    specifier is required.
  

• dma-names: RX and TX DMA request names.

    Should be "rx" and "tx", in that order.
  

For additional details on DMA client bindings see ../dma/dma.txt.

Example:

mmc0: mmc@13450000 {
compatible = “ingenic,jz4780-mmc”;
reg = <0x13450000 0x1000>;

interrupt-parent = <&intc>;
interrupts = <37>;

clocks = <&cgu JZ4780_CLK_MSC0>;
clock-names = "mmc";

dmas = <&dma JZ4780_DMA_MSC0_RX 0xffffffff>, <&dma JZ4780_DMA_MSC0_TX 0xffffffff>;
dma-names = "rx", "tx";

};