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