S32G2: Not able to drive GPIO Pin low

NGangadhar — Fri, 23 Jun 2023 05:53:17 GMT

Changes are done in device tree to drive PA_14 low on S32G2.

&pinctrl {

status = "okay";

gamma_pcie_pins: gamma_pcie_pins {

gamma_pcie_clkreq {

pinmux = <S32CC_PINMUX(14, FUNC0)>;

output-enable;

};

gamma_pcie_reset {

pinmux = <S32CC_PINMUX(15, FUNC0)>;

input-enable;

};

------

&gpio {

gamma_pcie_clkreq {

gpio-hog;

gpios = <14 GPIO_ACTIVE_LOW>;

output-low;

line-name = "gamma_pcie_clkreq";

};

NGangadhar_0-1687499371036.png

This print is noticed in dmesg – “gpio-335 (gamma_pcie_clkreq): hogged as output/low”

But when voltage is measured using multimeter, it is high.

Thanks & Regards,

Gangadhar

Re: S32G2: Not able to drive GPIO Pin low

MayanksPatel — Wed, 28 Jun 2023 06:39:34 GMT

Thank you for reaching out to NXP.

Which BSP Version are you using?

Have you checked the MSCR registers of GPIO14?

Also, share the device-tree file here so, I can integrate and test the same scenario.

Thanks,

Mayank s Patel