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:

quoted

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 <redacted>
---
 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