Messages in this thread | | | Date | Fri, 10 Jul 2015 18:52:11 +0530 | Subject | Re: [PATCH 2/3] PCI: host: pcie-designware: add support for suspend and resume | From | Pratyush Anand <> |
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Hi Kishon,
On Fri, Jul 3, 2015 at 4:33 PM, Kishon Vijay Abraham I <kishon@ti.com> wrote: > Certain platforms require MSE bit to be cleared to set the master > in standby mode. (In DRA7xx TRM_vE, section 24.9.4.5.2.2.1 PCIe > Controller Master Standby Behavior advises to use the clearing > of the local MSE bit to set the master in standby. Without this > some of the clocks do not idle). > > Cleared the MSE bit on suspend and enabled it back on resume. > This is required to get suspend/resume working.
Have you tested with a card having IO space memory as well. I think you might need to require clear and enable PCI_COMMAND_IO in suspend and resume respectively.
~Pratyush
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