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

[Sricharan Ramabadhran <quic_srichara@quicinc.com>]

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@quicinc.com>
>>
>> Add phy and controller nodes for a 2-lane Gen2 and
>> 1-lane Gen2 PCIe buses.
>>
>> Signed-off-by: Nitheesh Sekar <quic_nsekar@quicinc.com>
>> Signed-off-by: Sricharan R <quic_srichara@quicinc.com>
>> ---
>>   [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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