Messages in this thread | | | Date | Fri, 10 Jul 2015 20:19:59 +0530 | From | Kishon Vijay Abraham I <> | Subject | Re: [PATCH 2/3] PCI: host: pcie-designware: add support for suspend and resume |
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Hi Pratyush,
On Friday 10 July 2015 06:52 PM, Pratyush Anand wrote: > 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 don't have any cards with IO space memory. Do you have any suggestion for cards with IO space memory? > I think you might need to require clear and enable PCI_COMMAND_IO > in suspend and resume respectively.
okay.
Thanks Kishon
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