On the Overo connector, PWM0 and PWM1 are connected to the PWM outputs on
the TPS65950 part on the Over board. They are not connected to the Omap.
The twl4030 driver uses i2c.1 to communicate to the TPS65950 chip. According
to this beagleboard list, the twl and tps are pin and register compatible
Of course, on our new custom board, two LEDs are wired to the PWMs and I
need to control the LED brightness.
I have tried building a user space program to access the i2c. When I do the
ioctl to set the slave address it returns "Device or resource busy". This is
because the twl4030 driver is using the i2c.
I am digging into the twl4030 driver now. Has anyone else already been down
Is there a user space interface to the twl4030 that I could use to turn the
LEDs on and off? Treating them as a GPIO is better than nothing (I am stuck
with the LEDs always on now).
Please, if you have been into the twl4030 driver let us all benefit from
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