PCI: dra7xx: Clear MSE bit during suspend so clocks will idle

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DRA7xx requires the 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).

Clear the MSE bit on suspend and enable it on resume.  Clearing MSE bit is
required to get clocks to be idled after suspend.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jingoo Han <jingoohan1@gmail.com>

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Kishon Vijay Abraham I 2015-07-31 17:55:12 +05:30 • committed by Bjorn Helgaas

parent e52eb445ea

commit 389c7094ec

1 changed files with 40 additions and 0 deletions

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drivers/pci/host/pci-dra7xx.c

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