From fa15cec9cc319d276dc5f4b89b7f1119ea9d013d Mon Sep 17 00:00:00 2001 From: Anson Huang Date: Mon, 12 Oct 2020 20:44:02 +0800 Subject: [PATCH] arm64: dts: imx8mp-evk: Correct WDOG_B pin configuration Different revision of i.MX8MP 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.MX8MP 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/imx8mp-evk.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts index ad66f12..908b92b 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts +++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts @@ -262,7 +262,7 @@ pinctrl_wdog: wdoggrp { fsl,pins = < - MX8MP_IOMUXC_GPIO1_IO02__WDOG1_WDOG_B 0xc6 + MX8MP_IOMUXC_GPIO1_IO02__WDOG1_WDOG_B 0x166 >; }; }; -- 2.7.4