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* AHCI SATA Controller
SATA nodes are defined to describe on-chip Serial ATA controllers.
Each SATA controller should have its own node.
It is possible, but not required, to represent each port as a sub-node.
It allows to enable each port independently when dealing with multiple
PHYs.
Required properties:
- compatible : compatible string, one of:
- "allwinner,sun4i-a10-ahci"
- "brcm,iproc-ahci"
- "hisilicon,hisi-ahci"
- "cavium,octeon-7130-ahci"
- "ibm,476gtr-ahci"
- "marvell,armada-380-ahci"
- "marvell,armada-3700-ahci"
- "snps,dwc-ahci"
- "snps,spear-ahci"
- "generic-ahci"
- interrupts : <interrupt mapping for SATA IRQ>
- reg : <registers mapping>
Please note that when using "generic-ahci" you must also specify a SoC specific
compatible:
compatible = "manufacturer,soc-model-ahci", "generic-ahci";
Optional properties:
- dma-coherent : Present if dma operations are coherent
- clocks : a list of phandle + clock specifier pairs
- resets : a list of phandle + reset specifier pairs
- target-supply : regulator for SATA target power
- phy-supply : regulator for PHY power
- phys : reference to the SATA PHY node
- phy-names : must be "sata-phy"
- ahci-supply : regulator for AHCI controller
- ports-implemented : Mask that indicates which ports that the HBA supports
are available for software to use. Useful if PORTS_IMPL
is not programmed by the BIOS, which is true with
some embedded SOC's.
Required properties when using sub-nodes:
- #address-cells : number of cells to encode an address
- #size-cells : number of cells representing the size of an address
Sub-nodes required properties:
- reg : the port number
And at least one of the following properties:
- phys : reference to the SATA PHY node
- target-supply : regulator for SATA target power
Examples:
sata@ffe08000 {
compatible = "snps,spear-ahci";
reg = <0xffe08000 0x1000>;
interrupts = <115>;
};
ahci: sata@1c18000 {
compatible = "allwinner,sun4i-a10-ahci";
reg = <0x01c18000 0x1000>;
interrupts = <56>;
clocks = <&pll6 0>, <&ahb_gates 25>;
target-supply = <®_ahci_5v>;
};
With sub-nodes:
sata@f7e90000 {
compatible = "marvell,berlin2q-achi", "generic-ahci";
reg = <0xe90000 0x1000>;
interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&chip CLKID_SATA>;
#address-cells = <1>;
#size-cells = <0>;
sata0: sata-port@0 {
reg = <0>;
phys = <&sata_phy 0>;
target-supply = <®_sata0>;
};
sata1: sata-port@1 {
reg = <1>;
phys = <&sata_phy 1>;
target-supply = <®_sata1>;;
};
};
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