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

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Message-ID: <1542963884-20823-1-git-send-email-Anson.Huang@nxp.com>
Date:   Fri, 23 Nov 2018 09:10:09 +0000
From:   Anson Huang <anson.huang@....com>
To:     "daniel.lezcano@...aro.org" <daniel.lezcano@...aro.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
CC:     dl-linux-imx <linux-imx@....com>
Subject: [PATCH] dt-bindings: timer: gpt: update binding doc

The i.MX GPT timer driver binding doc is out of date,
the "interrupts", "clocks" and "clock-names" do NOT match
current GPT driver implementation, update it and use i.MX6SX
as example.

Signed-off-by: Anson Huang <Anson.Huang@....com>
---
 .../devicetree/bindings/timer/fsl,imxgpt.txt       | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/Documentation/devicetree/bindings/timer/fsl,imxgpt.txt b/Documentation/devicetree/bindings/timer/fsl,imxgpt.txt
index 9809b11..4e9fa16 100644
--- a/Documentation/devicetree/bindings/timer/fsl,imxgpt.txt
+++ b/Documentation/devicetree/bindings/timer/fsl,imxgpt.txt
@@ -2,17 +2,21 @@ 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 : should be "fsl,<soc>-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 an "per" or "osc_per" entry, and "ipg" entry
+                is optional according to SoC design.
 
 Example:
 
-gpt1: timer@...03000 {
-	compatible = "fsl,imx27-gpt", "fsl,imx1-gpt";
-	reg = <0x10003000 0x1000>;
-	interrupts = <26>;
-	clocks = <&clks 46>, <&clks 61>;
+gpt: gpt@...8000 {
+	compatible = "fsl,imx6sx-gpt", "fsl,imx31-gpt";
+	reg = <0x02098000 0x4000>;
+	interrupts = <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>;
+	clocks = <&clks IMX6SX_CLK_GPT_BUS>,
+		 <&clks IMX6SX_CLK_GPT_3M>;
 	clock-names = "ipg", "per";
 };
-- 
2.7.4