[PATCH V2] dt-bindings: timer: gpt: update binding doc

[Anson Huang]

The i.MX GPT timer driver binding doc is out of date,
update it according to current GPT timer driver.

Signed-off-by: Anson Huang <Anson.Huang@xxxxxxx>
---
 .../devicetree/bindings/timer/fsl,imxgpt.txt       | 28 +++++++++++++++++-----
 1 file changed, 22 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/timer/fsl,imxgpt.txt b/Documentation/devicetree/bindings/timer/fsl,imxgpt.txt
index 9809b11..2ed84ad 100644
--- a/Documentation/devicetree/bindings/timer/fsl,imxgpt.txt
+++ b/Documentation/devicetree/bindings/timer/fsl,imxgpt.txt
@@ -2,17 +2,33 @@ Freescale i.MX General Purpose Timer (GPT)
 
 Required properties:
 
-- compatible : should be "fsl,<soc>-gpt"
-- reg : Specifies base physical address and size of the registers.
-- interrupts : A list of 4 interrupts; one per timer channel.
-- clocks : The clocks provided by the SoC to drive the timer.
+- compatible : must be one of following:
+  - "fsl,imx1-gpt",
+  - "fsl,imx21-gpt",
+  - "fsl,imx27-gpt",
+  - "fsl,imx31-gpt",
+  - "fsl,imx25-gpt",
+  - "fsl,imx50-gpt",
+  - "fsl,imx51-gpt",
+  - "fsl,imx53-gpt",
+  - "fsl,imx6q-gpt",
+  - "fsl,imx6dl-gpt",
+  - "fsl,imx6sl-gpt",
+  - "fsl,imx6sx-gpt".
+- reg : specifies base physical address and size of the registers.
+- interrupts : should be the clock event device interrupt.
+- clocks : the clocks provided by the SoC to drive the timer, must contain
+           an entry for each entry in clock-names.
+- clock-names : must include "ipg" entry first, then "per" entry, "osc_per"
+                can be a substitute of "per" entry on some SoCs.
 
 Example:
 
 gpt1: timer@10003000 {
-	compatible = "fsl,imx27-gpt", "fsl,imx1-gpt";
+	compatible = "fsl,imx27-gpt", "fsl,imx21-gpt";
 	reg = <0x10003000 0x1000>;
 	interrupts = <26>;
-	clocks = <&clks 46>, <&clks 61>;
+	clocks = <&clks IMX27_CLK_GPT1_IPG_GATE>,
+		 <&clks IMX27_CLK_PER1_GATE>;
 	clock-names = "ipg", "per";
 };
-- 
2.7.4