Messages in this thread | | | Date | Mon, 25 Mar 2019 09:50:37 +0100 | From | Uwe Kleine-König <> | Subject | Re: [PATCH 0/1] pwm: meson: fix scheduling while atomic issue |
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Hello,
On Mon, Mar 25, 2019 at 09:41:53AM +0100, Uwe Kleine-König wrote: > If you want to implement further cleanups, my questions and propositions > are: > > - Is there a publicly available manual for this hardware? If yes, you > can add a link to it in the header of the driver. > > - Why do you handle reparenting of the PWM's clk in .request? Wouldn't > this be more suitable in .apply? > > - Does stopping the PWM (i.e. clearing MISC_{A,B}_EN in the MISC_AB > register) freeze the output, or is the currently running period > completed first? (The latter is the right behaviour.) > > - Please point out in the header that for changing period/duty > cycle/polarity the hardware must be stopped. (I suggest to apply the > style used in https://www.spinics.net/lists/linux-pwm/msg09262.html > for some consistency.)
Another thing I just noted: The .get_state callback only sets .enabled but nothing of the remaining information is provided.
Best regards Uwe
-- Pengutronix e.K. | Uwe Kleine-König | Industrial Linux Solutions | http://www.pengutronix.de/ |
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