| Message ID | 20250128-preset_v2-v5-1-4d230d956f8c@oss.qualcomm.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | PCI: dwc: Add support for configuring lane equalization presets | expand |
On 28.01.2025 10:37 AM, Krishna Chaitanya Chundru wrote: > Add PCIe lane equalization preset properties for 8 GT/s and 16 GT/s data > rates used in lane equalization procedure. > > Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com> > --- > This patch depends on the this dt binding pull request which got recently > merged: https://github.com/devicetree-org/dt-schema/pull/146 > --- > arch/arm64/boot/dts/qcom/x1e80100.dtsi | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/arch/arm64/boot/dts/qcom/x1e80100.dtsi b/arch/arm64/boot/dts/qcom/x1e80100.dtsi > index a36076e3c56b..6a2074297030 100644 > --- a/arch/arm64/boot/dts/qcom/x1e80100.dtsi > +++ b/arch/arm64/boot/dts/qcom/x1e80100.dtsi > @@ -2993,6 +2993,10 @@ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>, > phys = <&pcie6a_phy>; > phy-names = "pciephy"; > > + eq-presets-8gts = /bits/ 16 <0x5555 0x5555>; > + > + eq-presets-16gts = /bits/ 8 <0x55 0x55>; Think these should be 2x longer, for the 4-lane port? otherwise the values seem in sync with what the bootloader does (good) Konrad
diff --git a/arch/arm64/boot/dts/qcom/x1e80100.dtsi b/arch/arm64/boot/dts/qcom/x1e80100.dtsi index a36076e3c56b..6a2074297030 100644 --- a/arch/arm64/boot/dts/qcom/x1e80100.dtsi +++ b/arch/arm64/boot/dts/qcom/x1e80100.dtsi @@ -2993,6 +2993,10 @@ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>, phys = <&pcie6a_phy>; phy-names = "pciephy"; + eq-presets-8gts = /bits/ 16 <0x5555 0x5555>; + + eq-presets-16gts = /bits/ 8 <0x55 0x55>; + status = "disabled"; }; @@ -3115,6 +3119,8 @@ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>, phys = <&pcie5_phy>; phy-names = "pciephy"; + eq-presets-8gts = /bits/ 16 <0x5555 0x5555>; + status = "disabled"; }; @@ -3235,6 +3241,8 @@ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>, phys = <&pcie4_phy>; phy-names = "pciephy"; + eq-presets-8gts = /bits/ 16 <0x5555 0x5555>; + status = "disabled"; pcie4_port0: pcie@0 {
Add PCIe lane equalization preset properties for 8 GT/s and 16 GT/s data rates used in lane equalization procedure. Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com> --- This patch depends on the this dt binding pull request which got recently merged: https://github.com/devicetree-org/dt-schema/pull/146 --- arch/arm64/boot/dts/qcom/x1e80100.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+)