On Wednesday, November 05, 2014 06:34:44 PM Andy Shevchenko wrote: > The Intel BayTrail based machines have different configuration of the Low Power > Sub System (LPSS) IP. The LPSS contains few host controllers, such as I2C, SPI, > I2C and common DMA IP to serve DMA transfers. Unfortunately the DMA IP has no > power control accessible for software / OS. It goes automatically down whenever > last device goes to sleep and turned on when one of them is turned on. When > user tries to access the powered off DMA device the system hangs. > > This patch series addressing the issue. Rafael suggested to create a 'proxy' > device which makes DMA to be powered on on the certain points of time. > > Vinod, we would like to push this via Rafael's tree, so, please Ack or NAck the > patch 4/4. > > Scott, do you have a chance to test this patch series against last linux-pm > tree on HP laptops? I would appreciate your Tested-by tag. > > Andy Shevchenko (4): > ACPI / LPSS: add all LPSS devices to the specific power domain > ACPI / LPSS: allow to use specific PM domain during ->probe() > ACPI / LPSS: introduce a 'proxy' device to power on LPSS for DMA > dmaengine: dw: enable runtime PM I'm essentially fine with this series, but I'm not sure what the status of the Scott's testing is. Can you please tell me and Scott what in particular you wanted him to test? Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
