diff options
| author |   Pratyush Anand <pratyush.anand@gmail.com> | 2016-07-04 21:44:42 +0530 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2016-08-22 12:34:43 -0500 |
| commit | fe48cb8538421fbd16ecf8bf95829faf8d8c001e (patch) | |
| tree | e38cfb7e754dc352e03785dab0c33ab793c6c5f3 /Documentation/devicetree/bindings/pci/designware-pcie.txt | |
| parent | PCI: designware: Check LTSSM training bit before deciding link is up (diff) | |
| download | linux-dev-fe48cb8538421fbd16ecf8bf95829faf8d8c001e.tar.xz linux-dev-fe48cb8538421fbd16ecf8bf95829faf8d8c001e.zip | |
PCI: designware: Keep viewport fixed for IO transaction if num_viewport > 2
Most of the platforms have 3 or more viewports. For such platforms, We do
not need to share viewports between IO and CFG. Assign viewport 2 to IO
transactions in such cases.
Tested-by: Dong Bo <dongbo4@huawei.com>
Signed-off-by: Pratyush Anand <pratyush.anand@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/pci/designware-pcie.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/pci/designware-pcie.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pci/designware-pcie.txt b/Documentation/devicetree/bindings/pci/designware-pcie.txt index 6c5322c55411..1392c705ceca 100644 --- a/Documentation/devicetree/bindings/pci/designware-pcie.txt +++ b/Documentation/devicetree/bindings/pci/designware-pcie.txt @@ -17,6 +17,8 @@ Required properties: - num-lanes: number of lanes to use Optional properties: +- num-viewport: number of view ports configured in hardware. If a platform + does not specify it, the driver assumes 2. - num-lanes: number of lanes to use (this property should be specified unless the link is brought already up in BIOS) - reset-gpio: gpio pin number of power good signal @@ -44,4 +46,5 @@ Example configuration: interrupts = <25>, <24>; #interrupt-cells = <1>; num-lanes = <1>; + num-viewport = <3>; }; |