Hi Sascha,

> The current assumption as discussed by Philipp and me is that the ipg
> clk is only needed when the pwm output is driven by the ipg clk
> (MX3_PWMCR[16:17] = MX3_PWMCR_CLKSRC_IPG)

At least on my setup (i.MX6q) the ipg clock (ipg_clk) don't need to be
explicitly enabled in the ->apply() callback (in the pwm-imx.c) when
MX3_PWMCR_CLKSRC_IPG (0x01 - ipg_clk) is selected as the PWM source.


Best regards,
Łukasz Majewski