linux-kernel - Re: [PATCH v12 2/5] arm64: dts: qcom: sc7280: Add PCIe and PHY related nodes

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Date:   Tue, 26 Oct 2021 15:42:47 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Prasad Malisetty <pmaliset@...eaurora.org>, agross@...nel.org,
        bjorn.andersson@...aro.org, bhelgaas@...gle.com,
        robh+dt@...nel.org, swboyd@...omium.org, lorenzo.pieralisi@....com,
        svarbanov@...sol.com
Cc:     devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        dianders@...omium.org, mka@...omium.org, vbadigan@...eaurora.org,
        sallenki@...eaurora.org, manivannan.sadhasivam@...aro.org,
        linux-pci@...r.kernel.org
Subject: Re: [PATCH v12 2/5] arm64: dts: qcom: sc7280: Add PCIe and PHY
 related nodes

On 07/10/2021 20:48, Prasad Malisetty wrote:
> Add PCIe controller and PHY nodes for sc7280 SOC.
> 
> Signed-off-by: Prasad Malisetty <pmaliset@...eaurora.org>
> Reviewed-by: Stephen Boyd <swboyd@...omium.org>
> ---
>   arch/arm64/boot/dts/qcom/sc7280.dtsi | 118 +++++++++++++++++++++++++++++++++++
>   1 file changed, 118 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index 39635da..cde814f 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -1563,6 +1563,117 @@
>   			qcom,bcm-voters = <&apps_bcm_voter>;
>   		};
>   
> +		pcie1: pci@...8000 {
> +			compatible = "qcom,pcie-sc7280";
> +			reg = <0 0x01c08000 0 0x3000>,
> +			      <0 0x40000000 0 0xf1d>,
> +			      <0 0x40000f20 0 0xa8>,
> +			      <0 0x40001000 0 0x1000>,
> +			      <0 0x40100000 0 0x100000>;
> +
> +			reg-names = "parf", "dbi", "elbi", "atu", "config";
> +			device_type = "pci";
> +			linux,pci-domain = <1>;
> +			bus-range = <0x00 0xff>;
> +			num-lanes = <2>;
> +
> +			#address-cells = <3>;
> +			#size-cells = <2>;
> +
> +			ranges = <0x01000000 0x0 0x40200000 0x0 0x40200000 0x0 0x100000>,
> +				 <0x02000000 0x0 0x40300000 0x0 0x40300000 0x0 0x1fd00000>;
> +
> +			interrupts = <GIC_SPI 307 IRQ_TYPE_LEVEL_HIGH>;
> +			interrupt-names = "msi";
> +			#interrupt-cells = <1>;
> +			interrupt-map-mask = <0 0 0 0x7>;
> +			interrupt-map = <0 0 0 1 &intc 0 434 IRQ_TYPE_LEVEL_HIGH>,
> +					<0 0 0 2 &intc 0 435 IRQ_TYPE_LEVEL_HIGH>,
> +					<0 0 0 3 &intc 0 438 IRQ_TYPE_LEVEL_HIGH>,
> +					<0 0 0 4 &intc 0 439 IRQ_TYPE_LEVEL_HIGH>;
> +
> +			clocks = <&gcc GCC_PCIE_1_PIPE_CLK>,
> +				 <&gcc GCC_PCIE_1_PIPE_CLK_SRC>,
> +				 <&pcie1_lane 0>,

This should be just <&pcie1_lane>, as the phy doesn't have clock cells.

> +				 <&rpmhcc RPMH_CXO_CLK>,
> +				 <&gcc GCC_PCIE_1_AUX_CLK>,
> +				 <&gcc GCC_PCIE_1_CFG_AHB_CLK>,
> +				 <&gcc GCC_PCIE_1_MSTR_AXI_CLK>,
> +				 <&gcc GCC_PCIE_1_SLV_AXI_CLK>,
> +				 <&gcc GCC_PCIE_1_SLV_Q2A_AXI_CLK>,
> +				 <&gcc GCC_AGGRE_NOC_PCIE_TBU_CLK>,
> +				 <&gcc GCC_DDRSS_PCIE_SF_CLK>;
> +
> +			clock-names = "pipe",
> +				      "pipe_mux",
> +				      "phy_pipe",
> +				      "ref",
> +				      "aux",
> +				      "cfg",
> +				      "bus_master",
> +				      "bus_slave",
> +				      "slave_q2a",
> +				      "tbu",
> +				      "ddrss_sf_tbu";
> +
> +			assigned-clocks = <&gcc GCC_PCIE_1_AUX_CLK>;
> +			assigned-clock-rates = <19200000>;
> +
> +			resets = <&gcc GCC_PCIE_1_BCR>;
> +			reset-names = "pci";
> +
> +			power-domains = <&gcc GCC_PCIE_1_GDSC>;
> +
> +			phys = <&pcie1_lane>;
> +			phy-names = "pciephy";
> +
> +			pinctrl-names = "default";
> +			pinctrl-0 = <&pcie1_clkreq_n>;
> +
> +			iommus = <&apps_smmu 0x1c80 0x1>;
> +
> +			iommu-map = <0x0 &apps_smmu 0x1c80 0x1>,
> +				    <0x100 &apps_smmu 0x1c81 0x1>;
> +
> +			status = "disabled";
> +		};
> +
> +		pcie1_phy: phy@...e000 {
> +			compatible = "qcom,sm8250-qmp-gen3x2-pcie-phy";
> +			reg = <0 0x01c0e000 0 0x1c0>;
> +			#address-cells = <2>;
> +			#size-cells = <2>;
> +			ranges;
> +			clocks = <&gcc GCC_PCIE_1_AUX_CLK>,
> +				 <&gcc GCC_PCIE_1_CFG_AHB_CLK>,
> +				 <&gcc GCC_PCIE_CLKREF_EN>,
> +				 <&gcc GCC_PCIE1_PHY_RCHNG_CLK>;
> +			clock-names = "aux", "cfg_ahb", "ref", "refgen";
> +
> +			resets = <&gcc GCC_PCIE_1_PHY_BCR>;
> +			reset-names = "phy";
> +
> +			assigned-clocks = <&gcc GCC_PCIE1_PHY_RCHNG_CLK>;
> +			assigned-clock-rates = <100000000>;
> +
> +			status = "disabled";
> +
> +			pcie1_lane: lanes@...e200 {
> +				reg = <0 0x01c0e200 0 0x170>,
> +				      <0 0x01c0e400 0 0x200>,
> +				      <0 0x01c0ea00 0 0x1f0>,
> +				      <0 0x01c0e600 0 0x170>,
> +				      <0 0x01c0e800 0 0x200>,
> +				      <0 0x01c0ee00 0 0xf4>;
> +				clocks = <&gcc GCC_PCIE_1_PIPE_CLK>;
> +				clock-names = "pipe0";
> +
> +				#phy-cells = <0>;
> +				#clock-cells = <1>;
> +				clock-output-names = "pcie_1_pipe_clk";
> +			};
> +		};
> +
>   		ipa: ipa@...0000 {
>   			compatible = "qcom,sc7280-ipa";
>   
> @@ -2676,6 +2787,13 @@
>   			gpio-ranges = <&tlmm 0 0 175>;
>   			wakeup-parent = <&pdc>;
>   
> +			pcie1_clkreq_n: pcie1-clkreq-n {
> +				pins = "gpio79";
> +				function = "pcie1_clkreqn";
> +				drive-strength = <2>;
> +				bias-pull-up;
> +			};
> +
>   			qspi_clk: qspi-clk {
>   				pins = "gpio14";
>   				function = "qspi_clk";
> 


-- 
With best wishes
Dmitry