Good day.
I'm new in MPU programming. I haw read the article https://community.st.com/t5/stm32-mpus-embedded-software/struggling-with-pwm-sysfs-interface-stm32mp157f/td-p/67706 but it not help me.
I’m trying to activate PWM (timer5 ch1 H10)
Device tree configuration:
pwm5_pins_h: pwm5-1 {
pins {
pinmux = <STM32_PINMUX('H', 10, AF2)>;
bias-pull-down;
drive-push-pull;
slew-rate = <0>;
};
};
pwm5_sleep_pins_h: pwm5-sleep-1 {
pins {
pinmux = <STM32_PINMUX('H', 10, ANALOG)>;
};
};
&timers5 {
status = "okay";
/delete-property/dmas;
/delete-property/dma-names;
pwm{
pinctrl-0 = <&pwm5_pins_h>;
pinctrl-1 = <&pwm5_sleep_pins_h>;
pinctrl-names = "default", "sleep";
status = "okay";
};
};
But when I try to check PWM device using command
ls /sys/class/pwm
there is no any devices.
When i try check GPIO state using command
cat /sys/kernel/debug/pinctrl/soc\:pin-controller@50002000/pinmux-pins | grep "timer"
i see that H10 is UNCLAIMED
What I doing wrong?
With the best regards,
George
