Hi, On Thursday 19 January 2017 03:16 AM, Rob Herring wrote: > On Thu, Jan 12, 2017 at 03:56:19PM +0530, Kishon Vijay Abraham I wrote: >> Update device tree binding documentation of TI's dra7xx PCI >> controller to include property for enabling legacy mode. >> >> Signed-off-by: Kishon Vijay Abraham I <kis...@ti.com> >> --- >> Documentation/devicetree/bindings/pci/ti-pci.txt | 4 ++++ >> 1 file changed, 4 insertions(+) >> >> diff --git a/Documentation/devicetree/bindings/pci/ti-pci.txt >> b/Documentation/devicetree/bindings/pci/ti-pci.txt >> index 62f5f59..ed85e8e 100644 >> --- a/Documentation/devicetree/bindings/pci/ti-pci.txt >> +++ b/Documentation/devicetree/bindings/pci/ti-pci.txt >> @@ -39,6 +39,10 @@ DEVICE MODE >> - interrupts : one interrupt entries must be specified for main interrupt. >> - num-ib-windows : number of inbound address translation windows >> - num-ob-windows : number of outbound address translation windows >> + - syscon-legacy-mode: phandle to the syscon dt node. The 1st argument >> should >> + contain the register offset within syscon and the 2nd >> + argument should contain the bit field for setting the >> + legacy mode > > What's legacy mode?
It's the name of the bit-field defined in TRM used to add workaround for errata id i870 (See [PATCH 29/37] PCI: dwc: dra7xx: Workaround for errata id i870 of this series). I'm not sure what it does internally. Thanks Kishon