From b781820927c5fb0dacb2ef986b33e9b3cfc41930 Mon Sep 17 00:00:00 2001 From: Anson Huang Date: Mon, 12 Oct 2020 20:44:00 +0800 Subject: [PATCH] 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; And schmitt input is NOT necessary for this WDOG_B output pin, so remove it; Open drain outputs provide more flexibility to a designer as they can be pulled-up to any voltage found in the system, so enable it as well. Signed-off-by: Anson Huang Reviewed-by: Krzysztof Kozlowski Signed-off-by: Shawn Guo --- 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 09ad2d7..c74e006a 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-beacon-som.dtsi @@ -437,7 +437,7 @@ 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