| Message ID | 20241223-preset_v2-v3-1-a339f475caf5@oss.qualcomm.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | PCI: dwc: Add support for configuring lane equalization presets | expand |
On 23.12.2024 7:51 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> > --- Does this also apply to PCIe3? Konrad
On 12/23/2024 5:06 PM, Konrad Dybcio wrote: > On 23.12.2024 7:51 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> >> --- > > Does this also apply to PCIe3? > > Konrad >It will be applicable to PCIe3 also, I will update this in next patch - Krishna Chaitanya.
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(+)