Hi Krzysztof, I see that in pm_genpd_sumarry, the domains are off. However, i still see the clocks are on. For example; isp and cam is turned off in pm_genpd_summary, however cam clocks are still on. Should'nt the clocks be turned off first and then the domain. On Sun, Jan 10, 2016 at 11:45 AM, Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx> wrote: > 2016-01-09 19:19 GMT+09:00 Sriram V <vshrirama@xxxxxxxxx>: >> >> Hello, >> >> I am trying to power down power domains which are not used but i am >> unable to do so unless i write manually into the registers. >> >> Can anyone help me on the standard way to power down power domains on >> a exynos 5422. >> >> I tried marking status /bts-status to disable in the device tree file >> for pd-disp1, but that does not help. >> >> What is the standard way of powering down if they are not used. Do we >> need to do using dt or somewhere in the kernel board file? > > Hi, > > The domains defined in DT (and enabled in DT... status=disabled marks > the *node* as disabled, not the power domain) are automatically turned > off when attached devices are runtime suspended. Use > PM_DEBUG+PM_ADVANCED_DEBUG and then: > cat /sys/kernel/debug/pm_genpd/pm_genpd_summary > > Domains not present there are not defined so they are left in default > status set by bootloader (probably on). > > BR, > Krzysztof -- Regards, Sriram -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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