mirror of
https://github.com/torvalds/linux.git
synced 2024-12-19 01:23:20 +00:00
fc4f370d77
This reverts commit 5163fb6254
("ahci: added support for Freescale AHCI sata")
The reverted patch added Freescale QorIQ AHCI sata support to
ahci_platform driver though, but it left SoC specific settings to uboot.
It leads to QorIQ sata heavily depending on uboot. In order to removing
the dependency we first revert the old patch and then will add a new driver
for QorIQ SATA.
Since there are no LS* platforms that have been upstreamed, So
the revert would not break anything exists.
Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
81 lines
2.2 KiB
Plaintext
81 lines
2.2 KiB
Plaintext
* 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"
|
|
- "hisilicon,hisi-ahci"
|
|
- "ibm,476gtr-ahci"
|
|
- "marvell,armada-380-ahci"
|
|
- "snps,dwc-ahci"
|
|
- "snps,exynos5440-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
|
|
- target-supply : regulator for SATA target power
|
|
- phys : reference to the SATA PHY node
|
|
- phy-names : must be "sata-phy"
|
|
|
|
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@01c18000 {
|
|
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>;;
|
|
};
|
|
};
|