[U-Boot] [PATCH v2 08/19] tegra: Add support for PWFM

[Stephen Warren]

On 06/13/2012 10:19 AM, Simon Glass wrote:
> The pulse width/frequency modulation peripheral supports generating
> a repeating pulse. It is useful for controlling LCD brightness.

Surely this should be modeled as a driver that's instantiated from DT,
which provides n PWMs. As such, I'd expect the driver to have some kind
of init/probe function, and:

> +void pwfm_enable(struct pwfm_ctlr *pwfm, int rate, int pulse_width,
> +		int freq_divider);

to take a pwm_id parameter too.