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@xxxxxxxxx>
---
.../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
