About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog

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




Custom Search

Based on kernel version 4.9. Page generated on 2016-12-21 14:28 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	  - "brcm,iproc-ahci"
14	  - "hisilicon,hisi-ahci"
15	  - "cavium,octeon-7130-ahci"
16	  - "ibm,476gtr-ahci"
17	  - "marvell,armada-380-ahci"
18	  - "marvell,armada-3700-ahci"
19	  - "snps,dwc-ahci"
20	  - "snps,exynos5440-ahci"
21	  - "snps,spear-ahci"
22	  - "generic-ahci"
23	- interrupts        : <interrupt mapping for SATA IRQ>
24	- reg               : <registers mapping>
25	
26	Please note that when using "generic-ahci" you must also specify a SoC specific
27	compatible:
28		compatible = "manufacturer,soc-model-ahci", "generic-ahci";
29	
30	Optional properties:
31	- dma-coherent      : Present if dma operations are coherent
32	- clocks            : a list of phandle + clock specifier pairs
33	- target-supply     : regulator for SATA target power
34	- phys              : reference to the SATA PHY node
35	- phy-names         : must be "sata-phy"
36	- ports-implemented : Mask that indicates which ports that the HBA supports
37			      are available for software to use. Useful if PORTS_IMPL
38			      is not programmed by the BIOS, which is true with
39			      some embedded SOC's.
40	
41	Required properties when using sub-nodes:
42	- #address-cells    : number of cells to encode an address
43	- #size-cells       : number of cells representing the size of an address
44	
45	
46	Sub-nodes required properties:
47	- reg		    : the port number
48	And at least one of the following properties:
49	- phys		    : reference to the SATA PHY node
50	- target-supply    : regulator for SATA target power
51	
52	Examples:
53	        sata@ffe08000 {
54			compatible = "snps,spear-ahci";
55			reg = <0xffe08000 0x1000>;
56			interrupts = <115>;
57	        };
58	
59		ahci: sata@01c18000 {
60			compatible = "allwinner,sun4i-a10-ahci";
61			reg = <0x01c18000 0x1000>;
62			interrupts = <56>;
63			clocks = <&pll6 0>, <&ahb_gates 25>;
64			target-supply = <&reg_ahci_5v>;
65		};
66	
67	With sub-nodes:
68		sata@f7e90000 {
69			compatible = "marvell,berlin2q-achi", "generic-ahci";
70			reg = <0xe90000 0x1000>;
71			interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
72			clocks = <&chip CLKID_SATA>;
73			#address-cells = <1>;
74			#size-cells = <0>;
75	
76			sata0: sata-port@0 {
77				reg = <0>;
78				phys = <&sata_phy 0>;
79				target-supply = <&reg_sata0>;
80			};
81	
82			sata1: sata-port@1 {
83				reg = <1>;
84				phys = <&sata_phy 1>;
85				target-supply = <&reg_sata1>;;
86			};
87		};
Hide Line Numbers
About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog

Information is copyright its respective author. All material is available from the Linux Kernel Source distributed under a GPL License. This page is provided as a free service by mjmwired.net.