On 17/08/17 10:59, Kishon Vijay Abraham I wrote: > Hi Adrian, > > On Thursday 17 August 2017 12:13 PM, Adrian Hunter wrote: >> On 17/08/17 08:57, Kishon Vijay Abraham I wrote: >>> Hi Adrian, >>> >>> On Tuesday 15 August 2017 01:52 PM, Adrian Hunter wrote: >>>> On 07/08/17 19:01, Kishon Vijay Abraham I wrote: <SNIP> >>>>> + pm_runtime_enable(dev); >>>>> + ret = pm_runtime_get_sync(dev); >>>> >>>> What are you trying to do with runtime pm? There don't seem to be any pm >>>> callbacks, so does this do anything? >>> >>> yeah, pm_runtime_get_sync enables the functional clock and also configures the >>> SYSCONFIG regiters present in the controller. It gets the details for >>> configuring those from arch/arm/mach-omap2/omap_hwmod_* >> >> You mean it will do those things when you add the callbacks? I would prefer >> you leave out runtime pm until you can add the callbacks as well. > > No. Generally in callbacks, 'optional' functional clocks are enabled. But main > functional clock and interface clocks are enabled in pm_runtime_get_sync. > Without pm_runtime_get_sync, we won't be able to access controller registers. So that is done by the pm domain? Please add comments to the code to explain. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
