On Mon, Oct 12, 2020 at 08:44:00PM +0800, Anson Huang wrote: > 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 <Anson.Huang@xxxxxxx> > --- > Changes since V1: > - Provide more explanation of removing schmitt input and enabling open drain in commit msg. > --- > 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(-) Reviewed-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx> Best regards, Krzysztof
