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From: Anson Huang <anson.huang@nxp.com>
To: "robh+dt@kernel.org" <robh+dt@kernel.org>,
	"mark.rutland@arm.com" <mark.rutland@arm.com>,
	"wim@linux-watchdog.org" <wim@linux-watchdog.org>,
	"linux@roeck-us.net" <linux@roeck-us.net>,
	"shawnguo@kernel.org" <shawnguo@kernel.org>,
	"s.hauer@pengutronix.de" <s.hauer@pengutronix.de>,
	"kernel@pengutronix.de" <kernel@pengutronix.de>,
	"festevam@gmail.com" <festevam@gmail.com>,
	Aisheng Dong <aisheng.dong@nxp.com>,
	"ulf.hansson@linaro.org" <ulf.hansson@linaro.org>,
	"sboyd@kernel.org" <sboyd@kernel.org>,
	Daniel Baluta <daniel.baluta@nxp.com>,
	Peng Fan <peng.fan@nxp.com>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
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	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>
Cc: dl-linux-imx <linux-imx@nxp.com>
Subject: [PATCH V3 1/3] dt-bindings: watchdog: move i.MX system controller watchdog binding to SCU
Date: Sun, 5 May 2019 02:14:47 +0000
Message-ID: <1557022189-10993-1-git-send-email-Anson.Huang@nxp.com> (raw)

i.MX system controller watchdog depends on SCU driver to support
interrupt function, so it needs to be subnode of SCU node in DT,
binding doc should be moved to fsl,scu.txt as well.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
---
Changes since V2:
	- no content change, just merge two dt-binding patches and improve the commit message.
---
 .../devicetree/bindings/arm/freescale/fsl,scu.txt  | 15 ++++++++++++++
 .../bindings/watchdog/fsl-imx-sc-wdt.txt           | 24 ----------------------
 2 files changed, 15 insertions(+), 24 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt

diff --git a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
index 72d481c..9967212 100644
--- a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
+++ b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
@@ -122,6 +122,16 @@ RTC bindings based on SCU Message Protocol
 Required properties:
 - compatible: should be "fsl,imx8qxp-sc-rtc";
 
+Watchdog bindings based on SCU Message Protocol
+------------------------------------------------------------
+
+Required properties:
+- compatible: should be:
+              "fsl,imx8qxp-sc-wdt"
+              followed by "fsl,imx-sc-wdt";
+Optional properties:
+- timeout-sec: contains the watchdog timeout in seconds.
+
 Example (imx8qxp):
 -------------
 lsio_mu1: mailbox@5d1c0000 {
@@ -168,6 +178,11 @@ firmware {
 		rtc: rtc {
 			compatible = "fsl,imx8qxp-sc-rtc";
 		};
+
+		watchdog {
+			compatible = "fsl,imx8qxp-sc-wdt", "fsl,imx-sc-wdt";
+			timeout-sec = <60>;
+		};
 	};
 };
 
diff --git a/Documentation/devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt b/Documentation/devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt
deleted file mode 100644
index 02b87e9..0000000
--- a/Documentation/devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt
+++ /dev/null
@@ -1,24 +0,0 @@
-* Freescale i.MX System Controller Watchdog
-
-i.MX system controller watchdog is for i.MX SoCs with system controller inside,
-the watchdog is managed by system controller, users can ONLY communicate with
-system controller from secure mode for watchdog operations, so Linux i.MX system
-controller watchdog driver will call ARM SMC API and trap into ARM-Trusted-Firmware
-for watchdog operations, ARM-Trusted-Firmware is running at secure EL3 mode and
-it will request system controller to execute the watchdog operation passed from
-Linux kernel.
-
-Required properties:
-- compatible:	Should be :
-		"fsl,imx8qxp-sc-wdt"
-		followed by "fsl,imx-sc-wdt";
-
-Optional properties:
-- timeout-sec : Contains the watchdog timeout in seconds.
-
-Examples:
-
-watchdog {
-	compatible = "fsl,imx8qxp-sc-wdt", "fsl,imx-sc-wdt";
-	timeout-sec = <60>;
-};
-- 
2.7.4


             reply index

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-05  2:14 Anson Huang [this message]
2019-05-05  2:14 ` [PATCH V3 2/3] arm64: dts: imx8qxp: Move watchdog node into scu node Anson Huang
2019-05-05  2:15 ` [PATCH V3 3/3] watchdog: imx_sc: Add pretimeout support Anson Huang
2019-05-06 18:27   ` Guenter Roeck
2019-05-07  1:20     ` Anson Huang

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