Commit 837c333f authored by Abel Vesa's avatar Abel Vesa Committed by Bjorn Andersson
Browse files

arm64: dts: qcom: x1e80100: Fix PCIe 6a lanes description 



Fix the description and compatible for PCIe 6a, as it is in fact a
4-lanes controller and PHY, but it can also be used in 2-lanes mode. For
4-lanes mode, it uses the lanes provided by PCIe 6b. For 2-lanes mode,
PCIe 6a uses 2 lanes and then PCIe 6b uses the other 2 lanes. The number
of lanes in which the PHY should be configured depends on a TCSR register
value on each individual board.

Cc: stable+noautosel@kernel.org # Depends on pcie-qcom 16.0 GT/s support
Fixes: 5eb83fc1 ("arm64: dts: qcom: x1e80100: Add PCIe nodes")
Signed-off-by: default avatarAbel Vesa <abel.vesa@linaro.org>
Reviewed-by: default avatarKonrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: default avatarJohan Hovold <johan+linaro@kernel.org>
Tested-by: default avatarJohan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20241009-x1e80100-dts-fixes-pcie6a-v3-1-14a1163e691b@linaro.org


Signed-off-by: default avatarBjorn Andersson <andersson@kernel.org>
parent 5d3d9664

arch/arm64/boot/dts/qcom/x1e80100.dtsi

+6 −3
Original line number Diff line number Diff line
@@ -2931,7 +2931,7 @@ pcie6a: pci@1bf8000 { 
			dma-coherent;



			linux,pci-domain = <6>;

			num-lanes = <2>;

			num-lanes = <4>;



			interrupts = <GIC_SPI 773 IRQ_TYPE_LEVEL_HIGH>,

				     <GIC_SPI 774 IRQ_TYPE_LEVEL_HIGH>,
@@ -2997,8 +2997,9 @@ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>, 
		};



		pcie6a_phy: phy@1bfc000 {

			compatible = "qcom,x1e80100-qmp-gen4x2-pcie-phy";

			reg = <0 0x01bfc000 0 0x2000>;

			compatible = "qcom,x1e80100-qmp-gen4x4-pcie-phy";

			reg = <0 0x01bfc000 0 0x2000>,

			      <0 0x01bfe000 0 0x2000>;



			clocks = <&gcc GCC_PCIE_6A_PHY_AUX_CLK>,

				 <&gcc GCC_PCIE_6A_CFG_AHB_CLK>,
@@ -3023,6 +3024,8 @@ pcie6a_phy: phy@1bfc000 { 


			power-domains = <&gcc GCC_PCIE_6_PHY_GDSC>;



			qcom,4ln-config-sel = <&tcsr 0x1a000 0>;



			#clock-cells = <0>;

			clock-output-names = "pcie6a_pipe_clk";