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+* Qualcomm AHCI SATA Controller
+
+SATA nodes are defined to describe on-chip Serial ATA controllers.
+Each SATA controller should have its own node.
+
+Required properties:
+- compatible : compatible list, must contain "generic-ahci"
+- interrupts : <interrupt mapping for SATA IRQ>
+- reg : <registers mapping>
+- phys : Must contain exactly one entry as specified
+ in phy-bindings.txt
+- phy-names : Must be "sata-phy"
+
+Required properties for "qcom,ipq806x-ahci" compatible:
+- clocks : Must contain an entry for each entry in clock-names.
+- clock-names : Shall be:
+ "slave_iface" - Fabric port AHB clock for SATA
+ "iface" - AHB clock
+ "core" - core clock
+ "rxoob" - RX out-of-band clock
+ "pmalive" - Power Module Alive clock
+- assigned-clocks : Shall be:
+ SATA_RXOOB_CLK
+ SATA_PMALIVE_CLK
+- assigned-clock-rates : Shall be:
+ 100Mhz (100000000) for SATA_RXOOB_CLK
+ 100Mhz (100000000) for SATA_PMALIVE_CLK
+
+Example:
+ sata@29000000 {
+ compatible = "qcom,ipq806x-ahci", "generic-ahci";
+ reg = <0x29000000 0x180>;
+
+ interrupts = <0 209 0x0>;
+
+ clocks = <&gcc SFAB_SATA_S_H_CLK>,
+ <&gcc SATA_H_CLK>,
+ <&gcc SATA_A_CLK>,
+ <&gcc SATA_RXOOB_CLK>,
+ <&gcc SATA_PMALIVE_CLK>;
+ clock-names = "slave_iface", "iface", "core",
+ "rxoob", "pmalive";
+ assigned-clocks = <&gcc SATA_RXOOB_CLK>, <&gcc SATA_PMALIVE_CLK>;
+ assigned-clock-rates = <100000000>, <100000000>;
+
+ phys = <&sata_phy>;
+ phy-names = "sata-phy";
+ };
Add device tree binding for Qualcomm AHCI SATA controller and specifically the sata controller on the IPQ806x family of SoCs. We can utilize the "generic-ahci" platform driver with the addition of the sata phy to enable SATA support on Qualcomm SoCs with AHCI controllers. Signed-off-by: Kumar Gala <galak@codeaurora.org> --- v5: * Moved to using "generic-ahci" binding support and assigned-clocks so we can use upstream generic ahci support w/o a special driver. Updated binding spec to reflect that. v4: * Added simple PM ops implementation * Added setting of pmalive clk v3: * Added comment about suspend/resume not supported * Fixup ahci_platform_init_host for upstream change to interface * cleanup error handling of rxoob clk, moved to devm_clk_get/put v2: * Fixed MODULE_LICENSE to be GPL v2 .../devicetree/bindings/ata/qcom-sata.txt | 48 ++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 Documentation/devicetree/bindings/ata/qcom-sata.txt