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dt-bindings: arm: msm: support tuning of PCIe EQ preset request vector

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Add DT entry to determine which preset is requested and evaluated
in EQ master phase.

Change-Id: Ica7c91fcda99e47cd93bb40a7ffc75f4cfb22b92
This commit is contained in:
Tony Truong 2020-11-05 11:08:34 -08:00
commit cd5d40b7af
1 changed files with 7 additions and 0 deletions
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7
bindings/pci/pci-msm.txt
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@ -346,6 +346,12 @@ interconnects:
Definition: The latency(ms) between when PCIe link is up and before
any device over the switch is accessed
- qcom,eq-pset-req-vec:
Usage: optional
Definition: EQ preset request vector. Determines which preset is
requested and evauluated during initial part of the EQ master
phase. Default will be 0 if entry is not present.
- qcom,core-preset:
Usage: optional
Definition: Determines how aggressive the PCIe PHY equalization is for
@ -522,6 +528,7 @@ Example
qcom,ep-latency = <20>;
qcom,switch-latency = <25>;
qcom,eq-pset-req-vec = <0>;
qcom,core-preset = <0x55555555> /* short channel */
qcom,pcie-phy-ver = <0x2101>; /* v2 version 1.01 */
qcom,phy-status-offset = <0x814>;