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 <[email protected]> --- .../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. + +- 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
