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Linux kernel mirror (for testing)
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linux
1* AHCI SATA Controller
2
3SATA nodes are defined to describe on-chip Serial ATA controllers.
4Each SATA controller should have its own node.
5
6It is possible, but not required, to represent each port as a sub-node.
7It allows to enable each port independently when dealing with multiple
8PHYs.
9
10Required properties:
11- compatible : compatible string, one of:
12 - "brcm,iproc-ahci"
13 - "hisilicon,hisi-ahci"
14 - "cavium,octeon-7130-ahci"
15 - "ibm,476gtr-ahci"
16 - "marvell,armada-380-ahci"
17 - "marvell,armada-3700-ahci"
18 - "snps,dwc-ahci"
19 - "snps,spear-ahci"
20 - "generic-ahci"
21- interrupts : <interrupt mapping for SATA IRQ>
22- reg : <registers mapping>
23
24Please note that when using "generic-ahci" you must also specify a SoC specific
25compatible:
26 compatible = "manufacturer,soc-model-ahci", "generic-ahci";
27
28Optional properties:
29- dma-coherent : Present if dma operations are coherent
30- clocks : a list of phandle + clock specifier pairs
31- resets : a list of phandle + reset specifier pairs
32- target-supply : regulator for SATA target power
33- phy-supply : regulator for PHY power
34- phys : reference to the SATA PHY node
35- phy-names : must be "sata-phy"
36- ahci-supply : regulator for AHCI controller
37- ports-implemented : Mask that indicates which ports that the HBA supports
38 are available for software to use. Useful if PORTS_IMPL
39 is not programmed by the BIOS, which is true with
40 some embedded SOC's.
41
42Required properties when using sub-nodes:
43- #address-cells : number of cells to encode an address
44- #size-cells : number of cells representing the size of an address
45
46Sub-nodes required properties:
47- reg : the port number
48And at least one of the following properties:
49- phys : reference to the SATA PHY node
50- target-supply : regulator for SATA target power
51
52Examples:
53 sata@ffe08000 {
54 compatible = "snps,spear-ahci";
55 reg = <0xffe08000 0x1000>;
56 interrupts = <115>;
57 };
58
59With sub-nodes:
60 sata@f7e90000 {
61 compatible = "marvell,berlin2q-achi", "generic-ahci";
62 reg = <0xe90000 0x1000>;
63 interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
64 clocks = <&chip CLKID_SATA>;
65 #address-cells = <1>;
66 #size-cells = <0>;
67
68 sata0: sata-port@0 {
69 reg = <0>;
70 phys = <&sata_phy 0>;
71 target-supply = <®_sata0>;
72 };
73
74 sata1: sata-port@1 {
75 reg = <1>;
76 phys = <&sata_phy 1>;
77 target-supply = <®_sata1>;;
78 };
79 };