This series provides the support for turning on the arm-smmu's clocks/powerdomains using runtime pm. This is done using the recently introduced device links patches, which lets the symmu's runtime to follow the master's runtime pm, so the smmu remains powered only when the masters use it. Also added a patch to do the context/save restore during suspend. But a way to find if the context is really lost during suspend has to be added in some way. This is based on the device_link series [1]. Took some reference from the exynos runtime patches in post [2]. Tested this on a platform where context is not really lost, but atleast the sequence to restore the context is verified. [1] http://lkml.iu.edu/hypermail/linux/kernel/1609.3/02637.html [2] https://lkml.org/lkml/2016/10/20/70 Sricharan R (4): Docs: dt: document ARM SMMU clocks/powerdomains bindings iommu/arm-smmu: Add pm_runtime/sleep ops iommu/arm-smmu: Add context save restore support iommu/arm-smmu: Add the device_link between masters and smmu .../devicetree/bindings/iommu/arm,smmu.txt | 12 ++ drivers/iommu/arm-smmu.c | 168 ++++++++++++++++++++- 2 files changed, 179 insertions(+), 1 deletion(-) -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
