Thanks Peter,
I have exercised that option already before posting and somehow it didn't work.
Changing the parameters (and recompiling) didn't change the default values, so my conclusion is that they might be
somehow hard-coded in a kernel driver.
Jan
On 26/11/2014 12:34 AM Peter Gregory wrote:
I don't know if this will help, but have you tried changing the polarity of the PWM pin in the device tree overlay?
bs_pwm_test_P8_13 {
compatible = "pwm_test";
pwms = <&ehrpwm2 1 500000 0>;
pwm-names = "PWM_P8_13";
pinctrl-names = "default";
pinctrl-0 = <&bs_pwm_P8_13_0xc>;
enabled = <1>;
duty = <0>;
status = "okay";
};
The last numeric parameter of pwms <&ehrpwm2 1 500000 0> swaps the polarity of the PWM output.
With the default duty cycle of 0, the pin will be low on power-up.
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I don't know if this will help, but have you tried changing the polarity of the PWM pin in the device tree overlay?
bs_pwm_test_P8_13 {
compatible = "pwm_test";
pwms = <&ehrpwm2 1 500000 0>;
pwm-names = "PWM_P8_13";
pinctrl-names = "default";
pinctrl-0 = <&bs_pwm_P8_13_0xc>;
enabled = <1>;
duty = <0>;
status = "okay";
};
The last numeric parameter of pwms <&ehrpwm2 1 500000 0> swaps the polarity of the PWM output.
With the default duty cycle of 0, the pin will be low on power-up.
--
For more options, visit http://beagleboard.org/discuss
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For more options, visit http://beagleboard.org/discuss
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