Hi, On Saturday 12 November 2016 02:45 AM, Bjorn Helgaas wrote: > Hi Kishon, > > On Tue, Oct 11, 2016 at 06:28:34PM +0530, Kishon Vijay Abraham I wrote: >> PCIe in AM57x/DRA7x devices is by default >> configured to work in GEN2 mode. However there >> may be situations when working in GEN1 mode is >> desired. One example is limitation i925 (PCIe GEN2 >> mode not supported at junction temperatures < 0C). >> >> Add support to force Root Complex to work in GEN1 >> mode if so desired, but don't force GEN1 mode on >> any board just yet. >> >> Signed-off-by: Kishon Vijay Abraham I <[email protected]> >> Signed-off-by: Sekhar Nori <[email protected]> >> --- >> Documentation/devicetree/bindings/pci/ti-pci.txt | 1 + >> drivers/pci/host/pci-dra7xx.c | 27 >> ++++++++++++++++++++++ >> 2 files changed, 28 insertions(+) >> >> diff --git a/Documentation/devicetree/bindings/pci/ti-pci.txt >> b/Documentation/devicetree/bindings/pci/ti-pci.txt >> index 60e2516..a3d6ca3 100644 >> --- a/Documentation/devicetree/bindings/pci/ti-pci.txt >> +++ b/Documentation/devicetree/bindings/pci/ti-pci.txt >> @@ -25,6 +25,7 @@ PCIe Designware Controller >> >> Optional Property: >> - gpios : Should be added if a gpio line is required to drive PERST# line >> + - ti,pcie-is-gen1 : Force the PCIe controller to work in GEN1 (2.5 GT/s). > > Can we use "max-link-speed" so it's similar to imx6?
yeah, maybe we should make it a generic PCI property? Thanks Kishon
