On Wed, Jun 18, 2014 at 05:37:54PM +0200, Stephen Warren wrote: > On 06/18/2014 06:18 AM, Peter De Schrijver wrote: > > On Tue, Jun 17, 2014 at 11:51:20PM +0200, Thierry Reding wrote: > >> * PGP Signed by an unknown key > >> > >> On Tue, Jun 17, 2014 at 05:01:46PM +0300, Peter De Schrijver wrote: > >>> On Tue, Jun 17, 2014 at 02:13:15PM +0200, Thierry Reding wrote: > >>>>> Old Signed by an unknown key > >>>> > >>>> On Mon, Jun 16, 2014 at 04:01:02PM -0600, Stephen Warren wrote: > >>>>> On 06/04/2014 05:32 AM, Mikko Perttunen wrote: > >>>>>> This symbol needs to be exported to power on rails without using > >>>>>> tegra_powergate_sequence_power_up. tegra_powergate_sequence_power_up > >>>>>> cannot be used in situations where the driver wants to handle clocking > >>>>>> by itself. > >>>>> > >>>>> Thierry, are you OK with this change? > >>>> > >>>> I would've preferred tegra_powergate_sequence_power_up() to be used > >>> > >>> I don't think the current tegra_powergate_sequence_power_up() API is very well > >>> defined though. I don't think the clocks and resets required by the sequence > >>> should be provided by the driver. For one, there can be several clocks and > >>> resets that need to be controlled for a single domain. > >> > >> Do you have any suggestions for what the API should look like? Even if > >> we plan to move to some different API, I think there's some advantage in > >> using it consistently if for no other reason than to make it easier to > >> replace occurrences later on. > >> > > > > I think the API should only have the domain ID as input so: > > > > int tegra_powerdomain_on(int id) > > > > /* > > * Prerequisites: domain is off > > * Result: domain is on, clocks of the modules in the domain are off, modules are in reset > > */ > > > > int tegra_powerdomain_off(int id) > > > > /* > > * Prerequisites: all clocks of the modules in the domain are off > > * result: domain is off > > */ > > That doesn't make sense; the PMC doesn't have access to the clock and > reset IDs - that's why the API requires them to be passed in. > We should make driver look them up by name then. It doesn't make sense to move this knowledge to the drivers as there can be several modules in 1 powerdomain. So every driver would then need to have access to all clock and reset IDs of the modules of the domain? Cheers, Peter. -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
