xref: /freebsd/sys/contrib/device-tree/Bindings/ata/pata-arasan.txt (revision 7fdf597e96a02165cfe22ff357b857d5fa15ed8a) 
1* ARASAN PATA COMPACT FLASH CONTROLLER
2
3Required properties:
4- compatible: "arasan,cf-spear1340"
5- reg: Address range of the CF registers
6- interrupt: Should contain the CF interrupt number
7- clock-frequency: Interface clock rate, in Hz, one of
8       25000000
9       33000000
10       40000000
11       50000000
12       66000000
13       75000000
14      100000000
15      125000000
16      150000000
17      166000000
18      200000000
19
20Optional properties:
21- arasan,broken-udma: if present, UDMA mode is unusable
22- arasan,broken-mwdma: if present, MWDMA mode is unusable
23- arasan,broken-pio: if present, PIO mode is unusable
24- dmas: one DMA channel, as described in bindings/dma/dma.txt
25  required unless both UDMA and MWDMA mode are broken
26- dma-names: the corresponding channel name, must be "data"
27
28Example:
29
30	cf@fc000000 {
31		compatible = "arasan,cf-spear1340";
32		reg = <0xfc000000 0x1000>;
33		interrupt-parent = <&vic1>;
34		interrupts = <12>;
35		dmas = <&dma-controller 23>;
36		dma-names = "data";
37	};
38