38 lines
1.3 KiB
Plaintext
38 lines
1.3 KiB
Plaintext
|
* Renesas Multi Media Card Interface (MMCIF) Controller
|
||
|
|
|
||
|
|
This file documents differences between the core properties in mmc.txt
|
||
|
|
and the properties used by the MMCIF device.
|
||
|
|
|
||
|
|
|
||
|
|
Required properties:
|
||
|
|
|
||
|
|
- compatible: should be "renesas,mmcif-<soctype>", "renesas,sh-mmcif" as a
|
||
|
|
fallback. Examples with <soctype> are:
|
||
|
|
- "renesas,mmcif-r8a7740" for the MMCIF found in r8a7740 SoCs
|
||
|
|
- "renesas,mmcif-r8a7790" for the MMCIF found in r8a7790 SoCs
|
||
|
|
- "renesas,mmcif-r8a7791" for the MMCIF found in r8a7791 SoCs
|
||
|
|
- "renesas,mmcif-r8a7793" for the MMCIF found in r8a7793 SoCs
|
||
|
|
- "renesas,mmcif-r8a7794" for the MMCIF found in r8a7794 SoCs
|
||
|
|
|
||
|
|
- clocks: reference to the functional clock
|
||
|
|
|
||
|
|
- dmas: reference to the DMA channels, one per channel name listed in the
|
||
|
|
dma-names property.
|
||
|
|
- dma-names: must contain "tx" for the transmit DMA channel and "rx" for the
|
||
|
|
receive DMA channel.
|
||
|
|
- max-frequency: Maximum operating clock frequency, driver uses default clock
|
||
|
|
frequency if it is not set.
|
||
|
|
|
||
|
|
|
||
|
|
Example: R8A7790 (R-Car H2) MMCIF0
|
||
|
|
|
||
|
|
mmcif0: mmc@ee200000 {
|
||
|
|
compatible = "renesas,mmcif-r8a7790", "renesas,sh-mmcif";
|
||
|
|
reg = <0 0xee200000 0 0x80>;
|
||
|
|
interrupts = <0 169 IRQ_TYPE_LEVEL_HIGH>;
|
||
|
|
clocks = <&mstp3_clks R8A7790_CLK_MMCIF0>;
|
||
|
|
dmas = <&dmac0 0xd1>, <&dmac0 0xd2>;
|
||
|
|
dma-names = "tx", "rx";
|
||
|
|
max-frequency = <97500000>;
|
||
|
|
};
|