Messages in this thread | | | Subject | Re: [PATCH] regulator: core: Optimise enable/disable path for always on regulators | From | Liam Girdwood <> | Date | Thu, 19 Apr 2012 19:35:36 +0100 |
| |
On Thu, 2012-04-19 at 13:30 +0100, Mark Brown wrote: > If a regulator is always on for any reason then cache that when the > consumer is created and use it to optimise away the need to take locks > or recurse up the supply tree when consumers do enable or disable calls. > The scheduling of asynchronous work for bulk enables is also skipped. > > We don't actually check if the device physically supports control on the > basis that constraints allowing status changes on physically always on > regulators are nonsensical anyway. > > This is a very common pattern in hardware - it's normal to have some > power supplies that have either no software control or are critical to > system function - so many systems should be able to benefit. > > Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> > ---
Acked-by: Liam Girdwood <lrg@ti.com>
| |