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Documentation / devicetree / bindings / ata / ahci-platform.txt




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Based on kernel version 4.3. Page generated on 2015-11-02 12:44 EST.

1	* AHCI SATA Controller
2	
3	SATA nodes are defined to describe on-chip Serial ATA controllers.
4	Each SATA controller should have its own node.
5	
6	It is possible, but not required, to represent each port as a sub-node.
7	It allows to enable each port independently when dealing with multiple
8	PHYs.
9	
10	Required properties:
11	- compatible        : compatible string, one of:
12	  - "allwinner,sun4i-a10-ahci"
13	  - "hisilicon,hisi-ahci"
14	  - "ibm,476gtr-ahci"
15	  - "marvell,armada-380-ahci"
16	  - "snps,dwc-ahci"
17	  - "snps,exynos5440-ahci"
18	  - "snps,spear-ahci"
19	  - "fsl,qoriq-ahci" : for qoriq series socs which include ls1021, ls2085, etc.
20	  - "fsl,<chip>-ahci" : chip could be ls1021, ls2085 etc.
21	  - "generic-ahci"
22	- interrupts        : <interrupt mapping for SATA IRQ>
23	- reg               : <registers mapping>
24	
25	Please note that when using "generic-ahci" you must also specify a SoC specific
26	compatible:
27		compatible = "manufacturer,soc-model-ahci", "generic-ahci";
28	
29	Optional properties:
30	- dma-coherent      : Present if dma operations are coherent
31	- clocks            : a list of phandle + clock specifier pairs
32	- target-supply     : regulator for SATA target power
33	- phys              : reference to the SATA PHY node
34	- phy-names         : must be "sata-phy"
35	
36	Required properties when using sub-nodes:
37	- #address-cells    : number of cells to encode an address
38	- #size-cells       : number of cells representing the size of an address
39	
40	
41	Sub-nodes required properties:
42	- reg		    : the port number
43	And at least one of the following properties:
44	- phys		    : reference to the SATA PHY node
45	- target-supply    : regulator for SATA target power
46	
47	Examples:
48	        sata@ffe08000 {
49			compatible = "snps,spear-ahci";
50			reg = <0xffe08000 0x1000>;
51			interrupts = <115>;
52	        };
53	
54		ahci: sata@01c18000 {
55			compatible = "allwinner,sun4i-a10-ahci";
56			reg = <0x01c18000 0x1000>;
57			interrupts = <56>;
58			clocks = <&pll6 0>, <&ahb_gates 25>;
59			target-supply = <&reg_ahci_5v>;
60		};
61	
62	With sub-nodes:
63		sata@f7e90000 {
64			compatible = "marvell,berlin2q-achi", "generic-ahci";
65			reg = <0xe90000 0x1000>;
66			interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
67			clocks = <&chip CLKID_SATA>;
68			#address-cells = <1>;
69			#size-cells = <0>;
70	
71			sata0: sata-port@0 {
72				reg = <0>;
73				phys = <&sata_phy 0>;
74				target-supply = <&reg_sata0>;
75			};
76	
77			sata1: sata-port@1 {
78				reg = <1>;
79				phys = <&sata_phy 1>;
80				target-supply = <&reg_sata1>;;
81			};
82		};
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