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    SubjectRe: [PATCH v3 08/11] devicetree: bindings: pci: document PARF params bindings
    On Fri, May 01, 2020 at 12:06:15AM +0200, Ansuel Smith wrote:
    > It is now supported the editing of Tx De-Emphasis, Tx Swing and
    > Rx equalization params on ipq8064. Document this new optional params.
    >
    > Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
    > ---
    > .../devicetree/bindings/pci/qcom,pcie.txt | 36 +++++++++++++++++++
    > 1 file changed, 36 insertions(+)
    >
    > diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.txt b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
    > index 6efcef040741..8cc5aea8a1da 100644
    > --- a/Documentation/devicetree/bindings/pci/qcom,pcie.txt
    > +++ b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
    > @@ -254,6 +254,42 @@
    > - "perst-gpios" PCIe endpoint reset signal line
    > - "wake-gpios" PCIe endpoint wake signal line
    >
    > +- qcom,tx-deemph-gen1:
    > + Usage: optional (available for ipq/apq8064)
    > + Value type: <u32>
    > + Definition: Gen1 De-emphasis value.
    > + For ipq806x should be set to 24.

    Unless these need to be tuned per board, then the compatible string for
    ipq806x should imply all these settings.

    > +
    > +- qcom,tx-deemph-gen2-3p5db:
    > + Usage: optional (available for ipq/apq8064)
    > + Value type: <u32>
    > + Definition: Gen2 (3.5db) De-emphasis value.
    > + For ipq806x should be set to 24.
    > +
    > +- qcom,tx-deemph-gen2-6db:
    > + Usage: optional (available for ipq/apq8064)
    > + Value type: <u32>
    > + Definition: Gen2 (6db) De-emphasis value.
    > + For ipq806x should be set to 34.
    > +
    > +- qcom,tx-swing-full:
    > + Usage: optional (available for ipq/apq8064)
    > + Value type: <u32>
    > + Definition: TX launch amplitude swing_full value.
    > + For ipq806x should be set to 120.
    > +
    > +- qcom,tx-swing-low:
    > + Usage: optional (available for ipq/apq8064)
    > + Value type: <u32>
    > + Definition: TX launch amplitude swing_low value.
    > + For ipq806x should be set to 120.
    > +
    > +- qcom,rx0-eq:
    > + Usage: optional (available for ipq/apq8064)
    > + Value type: <u32>
    > + Definition: RX0 equalization value.
    > + For ipq806x should be set to 4.
    > +
    > * Example for ipq/apq8064
    > pcie@1b500000 {
    > compatible = "qcom,pcie-apq8064", "qcom,pcie-ipq8064", "snps,dw-pcie";
    > --
    > 2.25.1
    >

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