Re: [PATCH v3 08/10] arm64: dts: qcom: sm8450: add PCIe0 RC device

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 16/12/2021 01:35, Bjorn Andersson wrote:
On Fri 10 Dec 20:17 CST 2021, Dmitry Baryshkov wrote:

Add device tree node for the first PCIe host found on the Qualcomm
SM8450 platform.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
---
  arch/arm64/boot/dts/qcom/sm8450.dtsi | 101 +++++++++++++++++++++++++++
  1 file changed, 101 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8450.dtsi b/arch/arm64/boot/dts/qcom/sm8450.dtsi
index a047d8a22897..09087a34a007 100644
--- a/arch/arm64/boot/dts/qcom/sm8450.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8450.dtsi
@@ -627,6 +627,84 @@ i2c14: i2c@a98000 {
  				#size-cells = <0>;
  				status = "disabled";
  			};
+		];
+
+		pcie0: pci@1c00000 {
+			compatible = "qcom,pcie-sm8450";
+			reg = <0 0x01c00000 0 0x3000>,
+			      <0 0x60000000 0 0xf1d>,
+			      <0 0x60000f20 0 0xa8>,
+			      <0 0x60001000 0 0x1000>,
+			      <0 0x60100000 0 0x100000>;
+			reg-names = "parf", "dbi", "elbi", "atu", "config";
+			device_type = "pci";
+			linux,pci-domain = <0>;
+			bus-range = <0x00 0xff>;
+			num-lanes = <1>;
+
+			#address-cells = <3>;
+			#size-cells = <2>;
+
+			ranges = <0x01000000 0x0 0x60200000 0 0x60200000 0x0 0x100000>,
+				 <0x02000000 0x0 0x60300000 0 0x60300000 0x0 0x3d00000>;
+
+			interrupts = <GIC_SPI 141 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "msi";
+			#interrupt-cells = <1>;
+			interrupt-map-mask = <0 0 0 0x7>;
+			interrupt-map = <0 0 0 1 &intc 0 149 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
+					<0 0 0 2 &intc 0 150 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
+					<0 0 0 3 &intc 0 151 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
+					<0 0 0 4 &intc 0 152 IRQ_TYPE_LEVEL_HIGH>; /* int_d */

You need to pad these with a couple more zeros, see 0ac10b291bee
("arm64: dts: qcom: Fix 'interrupt-map' parent address cells")

Not quite. sm8450 does not define its (yet), so GICv3 node does not define address/size cells.


+
+			clocks = <&gcc GCC_PCIE_0_PIPE_CLK>,
+				 <&gcc GCC_PCIE_0_PIPE_CLK_SRC>,
+				 <&pcie0_lane>,
+				 <&rpmhcc RPMH_CXO_CLK>,
+				 <&gcc GCC_PCIE_0_AUX_CLK>,
+				 <&gcc GCC_PCIE_0_CFG_AHB_CLK>,
+				 <&gcc GCC_PCIE_0_MSTR_AXI_CLK>,
+				 <&gcc GCC_PCIE_0_SLV_AXI_CLK>,
+				 <&gcc GCC_PCIE_0_SLV_Q2A_AXI_CLK>,
+				 <&gcc GCC_DDRSS_PCIE_SF_TBU_CLK>,
+				 <&gcc GCC_AGGRE_NOC_PCIE_0_AXI_CLK>,
+				 <&gcc GCC_AGGRE_NOC_PCIE_1_AXI_CLK>;
+			clock-names = "pipe",
+				      "pipe_mux",
+				      "phy_pipe",
+				      "ref",
+				      "aux",
+				      "cfg",
+				      "bus_master",
+				      "bus_slave",
+				      "slave_q2a",
+				      "ddrss_sf_tbu",
+				      "aggre0",
+				      "aggre1";
+
+			iommus = <&apps_smmu 0x1c00 0x7f>;
+			iommu-map = <0x0   &apps_smmu 0x1c00 0x1>,
+				    <0x100 &apps_smmu 0x1c01 0x1>;
+
+			resets = <&gcc GCC_PCIE_0_BCR>;
+			reset-names = "pci";
+
+			power-domains = <&gcc PCIE_0_GDSC>;
+			power-domain-names = "gdsc";
+
+			phys = <&pcie0_lane>;
+			phy-names = "pciephy";
+
+			perst-gpio = <&tlmm 94 GPIO_ACTIVE_LOW>;
+			enable-gpio = <&tlmm 96 GPIO_ACTIVE_HIGH>;
+
+			pinctrl-names = "default";
+			pinctrl-0 = <&pcie0_default_state>;
+
+			interconnects = <&pcie_noc MASTER_PCIE_0 &mc_virt SLAVE_EBI1>;
+			interconnect-names = "pci";
+
+			status = "disabled";
  		};
pcie0_phy: phy@1c06000 {
@@ -763,6 +841,29 @@ tlmm: pinctrl@f100000 {
  			gpio-ranges = <&tlmm 0 0 211>;
  			wakeup-parent = <&pdc>;
+ pcie0_default_state: pcie0-default {

Binding states that the node name needs to have the suffix "-state".

Regards,
Bjorn

+				perst {
+					pins = "gpio94";
+					function = "gpio";
+					drive-strength = <2>;
+					bias-pull-down;
+				};
+
+				clkreq {
+					pins = "gpio95";
+					function = "pcie0_clkreqn";
+					drive-strength = <2>;
+					bias-pull-up;
+				};
+
+				wake {
+					pins = "gpio96";
+					function = "gpio";
+					drive-strength = <2>;
+					bias-pull-up;
+				};
+			};
+
  			qup_i2c13_default_state: qup-i2c13-default-state {
  				mux {
  					pins = "gpio48", "gpio49";
--
2.33.0



--
With best wishes
Dmitry



[Index of Archives]     [DMA Engine]     [Linux Coverity]     [Linux USB]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Greybus]

  Powered by Linux