Re: [PATCH V2 5/6] arm64: dts: qcom: ipq5018: Add PCIe related nodes

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On 8/30/2024 2:29 PM, Manivannan Sadhasivam wrote:
On Tue, Aug 27, 2024 at 10:27:56AM +0530, Sricharan R wrote:
From: Nitheesh Sekar <quic_nsekar@xxxxxxxxxxx>

Add phy and controller nodes for a 2-lane Gen2 and
1-lane Gen2 PCIe buses.

Signed-off-by: Nitheesh Sekar <quic_nsekar@xxxxxxxxxxx>
Signed-off-by: Sricharan R <quic_srichara@xxxxxxxxxxx>
---
  [v2] Removed relocatable flags,  removed assigned-clock-rates,
       fixed rest of the cosmetic comments.

  arch/arm64/boot/dts/qcom/ipq5018.dtsi | 168 +++++++++++++++++++++++++-
  1 file changed, 166 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/ipq5018.dtsi b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
index 7e6e2c121979..dd5d6b7ff094 100644
--- a/arch/arm64/boot/dts/qcom/ipq5018.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
@@ -9,6 +9,7 @@
  #include <dt-bindings/interrupt-controller/arm-gic.h>
  #include <dt-bindings/clock/qcom,gcc-ipq5018.h>
  #include <dt-bindings/reset/qcom,gcc-ipq5018.h>
+#include <dt-bindings/gpio/gpio.h>
/ {
  	interrupt-parent = <&intc>;
@@ -143,7 +144,33 @@ usbphy0: phy@5b000 {
  			resets = <&gcc GCC_QUSB2_0_PHY_BCR>;
#phy-cells = <0>;
+		};
+
+		pcie_x1phy: phy@7e000{
+			compatible = "qcom,ipq5018-uniphy-pcie-gen2x1";
+			reg = <0x0007e000 0x800>;
+			#phy-cells = <0>;
+			#clock-cells = <0>;
+			clocks = <&gcc GCC_PCIE1_PIPE_CLK>;
+			clock-names = "pipe";
+			assigned-clocks = <&gcc GCC_PCIE1_PIPE_CLK>;
+			resets = <&gcc GCC_PCIE1_PHY_BCR>,
+				 <&gcc GCC_PCIE1PHY_PHY_BCR>;
+			reset-names = "phy", "common";
+			status = "disabled";
+		};
+ pcie_x2phy: phy@86000{
+			compatible = "qcom,ipq5018-uniphy-pcie-gen2x2";
+			reg = <0x00086000 0x1000>;
+			#phy-cells = <0>;
+			#clock-cells = <0>;
+			clocks = <&gcc GCC_PCIE0_PIPE_CLK>;
+			clock-names = "pipe";
+			assigned-clocks = <&gcc GCC_PCIE0_PIPE_CLK>;
+			resets = <&gcc GCC_PCIE0_PHY_BCR>,
+				 <&gcc GCC_PCIE0PHY_PHY_BCR>;
+			reset-names = "phy", "common";
  			status = "disabled";
  		};
@@ -170,8 +197,8 @@ gcc: clock-controller@1800000 {
  			reg = <0x01800000 0x80000>;
  			clocks = <&xo_board_clk>,
  				 <&sleep_clk>,
-				 <0>,
-				 <0>,
+				 <&pcie_x2phy>,
+				 <&pcie_x1phy>,
  				 <0>,
  				 <0>,
  				 <0>,
@@ -387,6 +414,143 @@ frame@b128000 {
  				status = "disabled";
  			};
  		};
+
+		pcie0: pci@80000000 {

pcie@

 ok

+			compatible = "qcom,pcie-ipq5018";
+			reg =  <0x80000000 0xf1d>,
+			       <0x80000f20 0xa8>,
+			       <0x80001000 0x1000>,
+			       <0x00078000 0x3000>,
+			       <0x80100000 0x1000>;

Are you sure that the config space is only 4K?

 ok, let me double check.

+			reg-names = "dbi", "elbi", "atu", "parf", "config";
+			device_type = "pci";
+			linux,pci-domain = <0>;
+			bus-range = <0x00 0xff>;
+			num-lanes = <1>;
+			max-link-speed = <2>;
+			#address-cells = <3>;
+			#size-cells = <2>;
+
+			phys = <&pcie_x1phy>;
+			phy-names ="pciephy";
+
+			ranges = <0x01000000 0 0x80200000 0x80200000 0 0x00100000

Please check the value of this field in other SoCs.

 ok, if its about the child address encoding for IO region, will fix.


+				  0x02000000 0 0x80300000 0x80300000 0 0x10000000>;
+
+			#interrupt-cells = <1>;
+			interrupt-map-mask = <0 0 0 0x7>;
+			interrupt-map = <0 0 0 1 &intc 0 0 142 IRQ_TYPE_LEVEL_HIGH>,
+					<0 0 0 2 &intc 0 0 143 IRQ_TYPE_LEVEL_HIGH>,
+					<0 0 0 3 &intc 0 0 144 IRQ_TYPE_LEVEL_HIGH>,
+					<0 0 0 4 &intc 0 0 145 IRQ_TYPE_LEVEL_HIGH>;
+
+			interrupts = <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "global_irq";

I'm pretty sure that this SoC has SPI based MSI interrupts. So they should be
described even though ITS is supported.

 ok


+
+			clocks = <&gcc GCC_SYS_NOC_PCIE1_AXI_CLK>,
+				 <&gcc GCC_PCIE1_AXI_M_CLK>,
+				 <&gcc GCC_PCIE1_AXI_S_CLK>,
+				 <&gcc GCC_PCIE1_AHB_CLK>,
+				 <&gcc GCC_PCIE1_AUX_CLK>,
+				 <&gcc GCC_PCIE1_AXI_S_BRIDGE_CLK>;
+
+			clock-names = "iface",
+				      "axi_m",
+				      "axi_s",
+				      "ahb",
+				      "aux",
+				      "axi_bridge";
+
+			resets = <&gcc GCC_PCIE1_PIPE_ARES>,
+				 <&gcc GCC_PCIE1_SLEEP_ARES>,
+				 <&gcc GCC_PCIE1_CORE_STICKY_ARES>,
+				 <&gcc GCC_PCIE1_AXI_MASTER_ARES>,
+				 <&gcc GCC_PCIE1_AXI_SLAVE_ARES>,
+				 <&gcc GCC_PCIE1_AHB_ARES>,
+				 <&gcc GCC_PCIE1_AXI_MASTER_STICKY_ARES>,
+				 <&gcc GCC_PCIE1_AXI_SLAVE_STICKY_ARES>;
+
+			reset-names = "pipe",
+				      "sleep",
+				      "sticky",
+				      "axi_m",
+				      "axi_s",
+				      "ahb",
+				      "axi_m_sticky",
+				      "axi_s_sticky";
+
+			msi-map = <0x0 &v2m0 0x0 0xff8>;
+			status = "disabled";

Please add the rootport node also as like other SoCs.

 ok

Above comments applies to below PCIe node.

 ok

Regards,
 Sricharan





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