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Commit a3e96552 authored by Tony Truong's avatar Tony Truong
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dt-bindings: pcie: add entry for PCIe core preset 



Add devicetree entry to configure PCIe core preset value.

Change-Id: Ic5f410f9c6cc40cd05ebb254deb9980298b76b24
Signed-off-by: default avatarTony Truong <truong@codeaurora.org>
parent b40e37fa

Documentation/devicetree/bindings/pci/msm_pcie.txt

+5 −0
Original line number Diff line number Diff line
@@ -74,6 +74,10 @@ Optional Properties: 
    is changed from L0s to L0.

  - qcom,phy-power-down-offset: Offset from PCIe PHY base to control the power state

    of the PHY.

  - qcom,core-preset: Value for PCIe core preset. Determines how aggressive the

    PCIe PHY equalization is. The following are recommended settings:

	short channels: 0x55555555 (default)

	long channels: 0x77777777

  - qcom,pcie-phy-ver: version of PCIe PHY.

  - qcom,phy-sequence: The initialization sequence to bring up the PCIe PHY.

    Should be specified in groups (offset, value, delay).
@@ -286,6 +290,7 @@ Example: 
		qcom,phy-status-offset = <0x800>;

		qcom,phy-status-status = <6>;

		qcom,phy-power-down-offset = <0x840>;

		qcom,core-preset = <0x55555555>; /* short channels */

		qcom,cpl-timeout = <0x2>;



		iommus = <&anoc0_smmu>;