[PATCH v3 10/15] dt-bindings: PCI: aardvark: Describe the PCIe endpoint card reset pins

[Miquel Raynal]

A line might be used by the PCIe IP to reset the endpoint card upon:
  - platform reset,
  - hot reset,
  - link failure.

Describe the properties needed in this case (optional).

Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
---
 Documentation/devicetree/bindings/pci/aardvark-pci.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/aardvark-pci.txt b/Documentation/devicetree/bindings/pci/aardvark-pci.txt
index a440f182ccf8..8b7f048705ec 100644
--- a/Documentation/devicetree/bindings/pci/aardvark-pci.txt
+++ b/Documentation/devicetree/bindings/pci/aardvark-pci.txt
@@ -24,6 +24,9 @@ contain the following properties:
 The following are optional properties:
 
  - phys: the PCIe PHY handle
+ - pinctrl-names: must be "default".
+ - pinctrl-0: pin control group to be used to mux the PCIe endpoint card
+   reset line so that it will be automatically driven by the PCIe IP.
 
 In addition, the Device Tree describing an Aardvark PCIe controller
 must include a sub-node that describes the legacy interrupt controller
@@ -55,6 +58,8 @@ Example:
 				<0 0 0 3 &pcie_intc 2>,
 				<0 0 0 4 &pcie_intc 3>;
 		phys = <&comphy1 0>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pcie_card_reset_pins &pcie_clkreq_pins>;
 		pcie_intc: interrupt-controller {
 			interrupt-controller;
 			#interrupt-cells = <1>;
-- 
2.19.1