Not able to access pwm through sysfs in AGX Orin

[yglovi]

Hello team,

I was trying access pwm pin in AGX Orin on pin no 15 “pwm1”. I have configured the pin through jetson-io.py file. But I was not able to initialize the pin. Need help regarding sysfs call for pwm in jetson AGX Orin.

[JerryChang]

hello yglovi,

could you please also try modify mb1 pinmux configure as below…
$OUT/Linux_for_Tegra/bootloader/t186ref/BCT/tegra234-mb1-bct-pinmux-p3701-0000-a04.dtsi

                        soc_gpio39_pn1 {
                                nvidia,pins = "soc_gpio39_pn1";
                                nvidia,function = "gp";
                                nvidia,pull = <TEGRA_PIN_PULL_NONE>;
                                nvidia,tristate = <TEGRA_PIN_DISABLE>;
                                nvidia,enable-input = <TEGRA_PIN_DISABLE>;
                                nvidia,lpdr = <TEGRA_PIN_DISABLE>;
                        };

please also check device tree sources to confirm you’ve enable the PWM controller.
for example,

        pwm@3280000 {
                status = "okay";
        };

note,
you should perform a full flash to update the mb1 pinmux cfg,
thanks