[POWERPC] Add docs for Freescale PowerQUICC SATA device tree nodes

Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
index e56c1c7..e74a4a6 100644 (file)
--- a/Documentation/powerpc/booting-without-of.txt
+++ b/Documentation/powerpc/booting-without-of.txt
@@ -2743,6 +2743,36 @@ platforms are moved over to use the flattened-device-tree model.
                };
        };
 
+    * Freescale 8xxx/3.0 Gb/s SATA nodes
+
+    SATA nodes are defined to describe on-chip Serial ATA controllers.
+    Each SATA port should have its own node.
+
+    Required properties:
+    - compatible        : compatible list, contains 2 entries, first is
+                        "fsl,CHIP-sata", where CHIP is the processor
+                        (mpc8315, mpc8379, etc.) and the second is
+                        "fsl,pq-sata"
+    - interrupts        : <interrupt mapping for SATA IRQ>
+    - cell-index        : controller index.
+                              1 for controller @ 0x18000
+                              2 for controller @ 0x19000
+                              3 for controller @ 0x1a000
+                              4 for controller @ 0x1b000
+
+    Optional properties:
+    - interrupt-parent  : optional, if needed for interrupt mapping
+    - reg               : <registers mapping>
+
+   Example:
+
+       sata@18000 {
+               compatible = "fsl,mpc8379-sata", "fsl,pq-sata";
+               reg = <0x18000 0x1000>;
+               cell-index = <1>;
+               interrupts = <2c 8>;
+               interrupt-parent = < &ipic >;
+        };
 
    More devices will be defined as this spec matures.