Add DT bindings for the TI DA850 AHCI SATA controller.

Signed-off-by: Bartosz Golaszewski <bgolaszew...@baylibre.com>
---
 .../devicetree/bindings/ata/ahci-da850.txt          | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/ata/ahci-da850.txt

diff --git a/Documentation/devicetree/bindings/ata/ahci-da850.txt 
b/Documentation/devicetree/bindings/ata/ahci-da850.txt
new file mode 100644
index 0000000..d07c241
--- /dev/null
+++ b/Documentation/devicetree/bindings/ata/ahci-da850.txt
@@ -0,0 +1,21 @@
+Device tree binding for the TI DA850 AHCI SATA Controller
+---------------------------------------------------------
+
+Required properties:
+  - compatible: must be "ti,da850-ahci"
+  - reg: physical base addresses and sizes of the controller's register areas
+  - interrupts: interrupt specifier (refer to the interrupt binding)
+
+Optional properties:
+  - clocks: clock specifier (refer to the common clock binding)
+  - da850,clk_multiplier: the multiplier for the reference clock needed
+                          for 1.5GHz PLL output
+
+Example:
+
+       sata: ahci@0x218000 {
+               compatible = "ti,da850-ahci";
+               reg = <0x218000 0x2000>, <0x22c018 0x4>;
+               interrupts = <67>;
+               da850,clk_multiplier = <7>;
+       };
-- 
2.9.3

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