Enable PCIe1 controller and its corresponding PHY nodes on qcs6490-rb3g2 platform. SMMU v2 has limited SID's to assign dynamic SID's with the existing logic. For now, use static iommu-map table assigning unique SID's for each port as dynamic approach needs boarder community discussions. PCIe switch connected to this board has 3 downstream ports and to the one of the downstream an embedded ethernet is connected. Assign unique SID for each downstream port and to embedded ethernet, and also reserve a SID for the endpoints which are going to be connected to the other two downstream ports. As this PCIe switch is present in this platform only update iommu-map in this platform only as other board variants might have different PCIe topology and might need different mapping. Signed-off-by: Krishna chaitanya chundru <quic_krichai@xxxxxxxxxxx> --- Changes in v1: - Rebased on linux-next - Update the commit text to summerize the discussions on v1. - Link to v1: https://lore.kernel.org/linux-arm-msm/20240207-enable_pcie-v1-1-b684afa6371c@xxxxxxxxxxx/T/ --- arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 42 ++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts index 0d45662b8028..2d14bdc1ff2d 100644 --- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts +++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts @@ -684,6 +684,32 @@ &mdss_edp_phy { status = "okay"; }; +&pcie1 { + perst-gpios = <&tlmm 2 GPIO_ACTIVE_LOW>; + + pinctrl-0 = <&pcie1_reset_n>, <&pcie1_wake_n>; + pinctrl-names = "default"; + + iommu-map = <0x0 &apps_smmu 0x1c80 0x1>, + <0x100 &apps_smmu 0x1c81 0x1>, + <0x208 &apps_smmu 0x1c84 0x1>, + <0x210 &apps_smmu 0x1c85 0x1>, + <0x218 &apps_smmu 0x1c86 0x1>, + <0x300 &apps_smmu 0x1c87 0x1>, + <0x400 &apps_smmu 0x1c88 0x1>, + <0x500 &apps_smmu 0x1c89 0x1>, + <0x501 &apps_smmu 0x1c90 0x1>; + + status = "okay"; +}; + +&pcie1_phy { + vdda-phy-supply = <&vreg_l10c_0p88>; + vdda-pll-supply = <&vreg_l6b_1p2>; + + status = "okay"; +}; + &pmk8350_rtc { status = "okay"; }; @@ -819,4 +845,20 @@ lt9611_irq_pin: lt9611-irq-state { drive-strength = <2>; bias-disable; }; + + pcie1_reset_n: pcie1-reset-n-state { + pins = "gpio2"; + function = "gpio"; + drive-strength = <16>; + output-low; + bias-disable; + }; + + pcie1_wake_n: pcie1-wake-n-state { + pins = "gpio3"; + function = "gpio"; + drive-strength = <2>; + bias-pull-up; + }; + }; --- base-commit: 42f7652d3eb527d03665b09edac47f85fb600924 change-id: 20241024-enable_pcie-d2ce6fead849 Best regards, -- Krishna chaitanya chundru <quic_krichai@xxxxxxxxxxx>
