The Freescale i.MX SATA controller mostly conforms to the AHCI
interface, but there are some special extensions at integration level
like clocks settings and hardware parameters.
Let's create a separate bindings doc for imx sata controller, so that
more imx specific properties can be added later without messing up the
generic ahci-platform bindings.
Signed-off-by: Shawn Guo <shawn.guo@xxxxxxxxxxxxx>
---
.../devicetree/bindings/ata/ahci-platform.txt | 6 -----
Documentation/devicetree/bindings/ata/imx-sata.txt | 26 ++++++++++++++++++++++
2 files changed, 26 insertions(+), 6 deletions(-)
create mode 100644 Documentation/devicetree/bindings/ata/imx-sata.txt
diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.txt b/Documentation/devicetree/bindings/ata/ahci-platform.txt
index c96d8dcf98fd..549ceb8cb93b 100644
--- a/Documentation/devicetree/bindings/ata/ahci-platform.txt
+++ b/Documentation/devicetree/bindings/ata/ahci-platform.txt
@@ -6,8 +6,6 @@ Each SATA controller should have its own node.
Required properties:
- compatible : compatible string, one of:
- "allwinner,sun4i-a10-ahci"
- - "fsl,imx53-ahci"
- - "fsl,imx6q-ahci"
- "hisilicon,hisi-ahci"
- "ibm,476gtr-ahci"
- "marvell,armada-380-ahci"
@@ -22,10 +20,6 @@ Optional properties:
- clocks : a list of phandle + clock specifier pairs
- target-supply : regulator for SATA target power
-"fsl,imx53-ahci", "fsl,imx6q-ahci" required properties:
-- clocks : must contain the sata, sata_ref and ahb clocks
-- clock-names : must contain "ahb" for the ahb clock
-
Examples:
sata@ffe08000 {
compatible = "snps,spear-ahci";
diff --git a/Documentation/devicetree/bindings/ata/imx-sata.txt b/Documentation/devicetree/bindings/ata/imx-sata.txt
new file mode 100644
index 000000000000..aeb99dd986b0
--- /dev/null
+++ b/Documentation/devicetree/bindings/ata/imx-sata.txt
@@ -0,0 +1,26 @@
+* Freescale i.MX AHCI SATA Controller
+
+The Freescale i.MX SATA controller mostly conforms to the AHCI interface
+with some special extensions at integration level.
+
+Required properties:
+- compatible : should be one of the following:
+ - "fsl,imx53-ahci" for i.MX53 SATA controller
+ - "fsl,imx6q-ahci" for i.MX6Q SATA controller
+- interrupts : interrupt mapping for SATA IRQ
+- reg : registers mapping
+- clocks : list of clock specifiers, must contain an entry for each
+ required entry in clock-names
+- clock-names : should include "sata", "sata_ref" and "ahb" entries
+
+Examples:
+
+sata@02200000 {
+ compatible = "fsl,imx6q-ahci";
+ reg = <0x02200000 0x4000>;
+ interrupts = <0 39 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clks IMX6QDL_CLK_SATA>,
+ <&clks IMX6QDL_CLK_SATA_REF_100M>,
+ <&clks IMX6QDL_CLK_AHB>;
+ clock-names = "sata", "sata_ref", "ahb";
+};
--
1.8.3.2
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