[PATCH 1/2] dt-bindings:pci: Set LTSSM Detect.Quiet state delay.

[Nadeem Athani]

The parameter detect-quiet-min-delay can be used to program the minimum
time that LTSSM waits on entering Detect.Quiet state.
00 : 0us minimum wait time in Detect.Quiet state.
01 : 100us minimum wait time in Detect.Quiet state.
10 : 1000us minimum wait time in Detect.Quiet state.
11 : 2000us minimum wait time in Detect.Quiet state.

Signed-off-by: Nadeem Athani <nadeem@xxxxxxxxxxx>
---
 .../devicetree/bindings/pci/cdns,cdns-pcie-host.yaml        | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/cdns,cdns-pcie-host.yaml b/Documentation/devicetree/bindings/pci/cdns,cdns-pcie-host.yaml
index 293b8ec318bc..a1d56e0be419 100644
--- a/Documentation/devicetree/bindings/pci/cdns,cdns-pcie-host.yaml
+++ b/Documentation/devicetree/bindings/pci/cdns,cdns-pcie-host.yaml
@@ -27,6 +27,18 @@ properties:
 
   msi-parent: true
 
+  detect-quiet-min-delay:
+    description:
+      LTSSM Detect.Quiet state minimum delay.
+      00 : 0us minimum wait time
+      01 : 100us minimum wait time
+      10 : 1000us minimum wait time
+      11 : 2000us minimum wait time
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 3
+    default: 0
+
 required:
   - reg
   - reg-names
@@ -48,6 +60,7 @@ examples:
             linux,pci-domain = <0>;
             vendor-id = <0x17cd>;
             device-id = <0x0200>;
+            detect-quiet-min-delay = <0>;
 
             reg = <0x0 0xfb000000  0x0 0x01000000>,
                   <0x0 0x41000000  0x0 0x00001000>;
-- 
2.15.0