Can the GPIO signal be pullup in low power mode?

[celiley]

Hello,

I want a signal to be high when the processor is in standby mode. Can imx6qp assign a signal from the GPIO while in low power mode? I looked at the relevant docs but couldn't find an answer. Glad if you help

Thanks, regards

[igorpadykov · Accepted solution]

Hi Celile

gpio pad settings (like pull-up) are retained in low power modes, they can not be configured specific

for some low power mode, one can look at for example MX6QDL_PAD_EIM_A25__GPIO5_IO02 0x000b1

https://source.codeaurora.org/external/imx/linux-imx/tree/arch/arm/boot/dts/imx6qdl-colibri.dtsi?h=i...

bits PUE,PKE,PUS described in sect.36.4.227 Pad Control Register (IOMUXC_SW_PAD_CTL_PAD_EIM_ADDR25)

i.MX 6Dual/6Quad Applications Processor Reference Manual

AN5078 Influence of Pin Setting on System Function and Performance

https://source.codeaurora.org/external/imx/linux-imx/tree/Documentation/devicetree/bindings/pinctrl/...

Best regards
igor