[PATCH v3 2/2] regulator: pwm: Prevent falling too fast

Mark Brown broonie at kernel.org
Thu Sep 1 12:51:06 PDT 2016

On Tue, Aug 30, 2016 at 09:21:16PM -0700, Douglas Anderson wrote:

> In this patch we actually block returning from the set_voltage() call
> until we've finished delaying.  A future patch atop this one might
> choose to return more immediately and let the voltages fall in the
> background.  That would possibly to allow us to cancel a slow downward
> decay if there was a request to go back up.

We already have mechanisms in the core for drivers to tell the core how
long a ramp they need for a given voltage transition - you should extend
them (probably needs a set_voltage_time() operation adding) so that
anything like this can be done in the core rather than open coded in
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 473 bytes
Desc: not available
URL: <http://lists.infradead.org/pipermail/linux-rockchip/attachments/20160901/62b35bab/attachment.sig>

More information about the Linux-rockchip mailing list