My hardward connect Jeston Nano GPIO08 to control power io, I know hardware GPIO08 is nano GPIO_PZ2 ,I got information form pinmux doc that pin number is 202, 25(gpioZ)*8+2=202,But when I try to “echo 202 > /sys/class/gpio/export”,
It return “Device is busy!”,
can not create a “gpio202” node
what can I do, Does I must modify dts to change PZ2 pinmux?,
nvidia,pins = “pz2”;
nvidia,function = “rsvd2”;
nvidia,pull = <TEGRA_PIN_PULL_UP>;
nvidia,tristate = <TEGRA_PIN_DISABLE>;
nvidia,enable-input = <TEGRA_PIN_ENABLE>;
I do not know how to modify it ,I just want to control PZ2 as a gpio, It look likes in pwm-fun mode now!
“rsvd” is what?, If I want pinmux to gpio,How can I modify?