linux-kernel - [PATCH 1/3] arm64: dts: imx8mm: Correct WDOG

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Message-Id: <1602229667-13165-1-git-send-email-Anson.Huang@nxp.com>
Date:   Fri,  9 Oct 2020 15:47:45 +0800
From:   Anson Huang <Anson.Huang@....com>
To:     robh+dt@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, krzk@...nel.org,
        aford173@...il.com, daniel.baluta@....com, shengjiu.wang@....com,
        peter.chen@....com, alifer.wsdm@...il.com, abel.vesa@....com,
        yibin.gong@....com, jun.li@....com, l.stach@...gutronix.de,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     Linux-imx@....com
Subject: [PATCH 1/3] arm64: dts: imx8mm: Correct WDOG_B pin configuration

Different revision of i.MX8MM EVK boards may have different external
pull up registor design, some are enabled while some are NOT, to make
sure the WDOG_B pin works properly, better to enable internal pull up
resistor. Since enabling internal pull up resistor is NOT harmful and
having benefit of flexibility on different board design, just enable
it for all i.MX8MM boards.

Signed-off-by: Anson Huang <Anson.Huang@....com>
---
 arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi | 2 +-
 arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi        | 2 +-
 arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi    | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
index 6de86a4..a941301 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi
@@ -398,7 +398,7 @@
 
 		pinctrl_wdog: wdoggrp {
 			fsl,pins = <
-				MX8MM_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B		0xc6
+				MX8MM_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B		0x166
 			>;
 		};
 
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
index f305a53..469d570 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
@@ -468,7 +468,7 @@
 
 	pinctrl_wdog: wdoggrp {
 		fsl,pins = <
-			MX8MM_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B	0xc6
+			MX8MM_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B	0x166
 		>;
 	};
 };
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi
index 4107fe9..38e879d 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi
@@ -555,7 +555,7 @@
 
 	pinctrl_wdog: wdoggrp {
 		fsl,pins = <
-			MX8MM_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B	0xc6
+			MX8MM_IOMUXC_GPIO1_IO02_WDOG1_WDOG_B	0x166
 		>;
 	};
 };
-- 
2.7.4