Documentation:: Add documentation for APM X-Gene SoC SATA host controller DTS binding
Signed-off-by: Loc Ho <lho@xxxxxxx>
Signed-off-by: Tuan Phan <tphan@xxxxxxx>
Signed-off-by: Suman Tripathi <stripathi@xxxxxxx>
---
.../devicetree/bindings/ata/apm-xgene.txt | 56 ++++++++++++++++++++
1 files changed, 56 insertions(+), 0 deletions(-)
create mode 100644 Documentation/devicetree/bindings/ata/apm-xgene.txt
diff --git a/Documentation/devicetree/bindings/ata/apm-xgene.txt b/Documentation/devicetree/bindings/ata/apm-xgene.txt
new file mode 100644
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+* APM X-Gene 6.0 Gb/s SATA host controller nodes
+
+SATA host controller nodes are defined to describe on-chip Serial ATA
+controllers. Each SATA controller (pair of ports) have its own node.
+
+Required properties:
+- compatible : Shall be "apm,xgene-ahci"
+- reg : First memory resource shall be the AHCI memory
+ resource.
+ Second memory resource shall be the host controller
+ memory resource.
+- interrupt-parent : Interrupt controller
+- interrupts : Interrupt mapping for SATA host controller IRQ
+- clocks : Reference to the clock entry
+- phys : PHY reference
+- phy-names : Name of the PHY reference. The name should be
+ formed by "sataphy" plus lower case hex for the
+ lower 32-bit PHY CSR address (2nd memory resource)
+
+Optional properties:
+- status : Shall be "ok" if enabled or "na" if disabled.
+ Default is "ok".
+
+Example:
+ sata0: sata@1a000000 {
+ compatible = "apm,xgene-ahci";
+ reg = <0x0 0x1a000000 0x0 0x100000>,
+ <0x0 0x1f210000 0x0 0x10000>;
+ interrupt-parent = <&gic>;
+ interrupts = <0x0 0x86 0x4>;
+ status = "disabled";
+ phys = <&sataphy0>;
+ phy-names = "sataphy1f210000";
+ };
+
+ sata1: sata@1a400000 {
+ compatible = "apm,xgene-ahci";
+ reg = <0x0 0x1a400000 0x0 0x100000>,
+ <0x0 0x1f220000 0x0 0x10000>;
+ interrupt-parent = <&gic>;
+ interrupts = <0x0 0x87 0x4>;
+ status = "ok";
+ phys = <&sataphy1>;
+ phy-names = "sataphy1f220000";
+ };
+
+ sata2: sata@1a800000 {
+ compatible = "apm,xgene-ahci";
+ reg = <0x0 0x1a800000 0x0 0x100000>,
+ <0x0 0x1f230000 0x0 0x10000>;
+ interrupt-parent = <&gic>;
+ interrupts = <0x0 0x88 0x4>;
+ status = "ok";
+ phys = <&sataphy2>;
+ phy-names = "sataphy1f230000";
+ };
--
1.5.5
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