diff mbox series

[v1,5/5] arm64: dts: qcom: sa8775p: Add ep pcie0 controller node

Message ID 1695218113-31198-6-git-send-email-quic_msarkar@quicinc.com
State New
Headers
Series arm64: qcom: sa8775p: add support for EP PCIe |

Commit Message

Mrinmay Sarkar Sept. 20, 2023, 1:55 p.m. UTC 
  Add ep pcie dtsi node for pcie0 controller found on sa8775p platform.

Signed-off-by: Mrinmay Sarkar <quic_msarkar@quicinc.com>
---
 arch/arm64/boot/dts/qcom/sa8775p.dtsi | 45 +++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

Comments

Manivannan Sadhasivam Sept. 21, 2023, 9:48 a.m. UTC | #1 
On Wed, Sep 20, 2023 at 07:25:12PM +0530, Mrinmay Sarkar wrote:
> Add ep pcie dtsi node for pcie0 controller found on sa8775p platform.
> 

It would be good to add more info in the commit message, like PCIe Gen, lane
info, IP revision etc...

> Signed-off-by: Mrinmay Sarkar <quic_msarkar@quicinc.com>
> ---
>  arch/arm64/boot/dts/qcom/sa8775p.dtsi | 45 +++++++++++++++++++++++++++++++++++
>  1 file changed, 45 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
> index 9f4f58e8..5571131 100644
> --- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
> @@ -2600,4 +2600,49 @@
>  
>  		status = "disabled";
>  	};
> +
> +	pcie0_ep: pcie-ep@1c00000 {
> +		compatible = "qcom,sa8775p-pcie-ep";
> +		reg = <0x0 0x01c00000 0x0 0x3000>,
> +		      <0x0 0x40000000 0x0 0xf20>,
> +		      <0x0 0x40000f20 0x0 0xa8>,
> +		      <0x0 0x40001000 0x0 0x4000>,
> +		      <0x0 0x40200000 0x0 0x100000>,
> +		      <0x0 0x01c03000 0x0 0x1000>,
> +		      <0x0 0x40005000 0x0 0x2000>;
> +		reg-names = "parf", "dbi", "elbi", "atu", "addr_space",
> +			    "mmio", "dma";
> +
> +		clocks = <&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>;
> +
> +		clock-names = "aux",
> +			      "cfg",
> +			      "bus_master",
> +			      "bus_slave",
> +			      "slave_q2a";
> +
> +		interrupts = <GIC_SPI 306 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 147 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 630 IRQ_TYPE_LEVEL_HIGH>;
> +
> +		interrupt-names = "global", "doorbell", "dma";
> +
> +		interconnects = <&pcie_anoc MASTER_PCIE_0 0 &mc_virt SLAVE_EBI1 0>,
> +				<&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_PCIE_0 0>;
> +		interconnect-names = "pcie-mem", "cpu-pcie";
> +

Don't you need iommu property?

> +		resets = <&gcc GCC_PCIE_0_BCR>;
> +		reset-names = "core";
> +		power-domains = <&gcc PCIE_0_GDSC>;
> +		phys = <&pcie0_phy>;
> +		phy-names = "pciephy";
> +		max-link-speed = <3>;

Gen 3?

> +		num-lanes = <2>;

Only 2 lanes? Or the other one has 4 lanes?

- Mani

> +
> +		status = "disabled";
> +	};
>  };
> -- 
> 2.7.4
>
Mrinmay Sarkar Oct. 11, 2023, 10:44 a.m. UTC | #2 
On 9/21/2023 3:18 PM, Manivannan Sadhasivam wrote:
> On Wed, Sep 20, 2023 at 07:25:12PM +0530, Mrinmay Sarkar wrote:
>> Add ep pcie dtsi node for pcie0 controller found on sa8775p platform.
>>
> It would be good to add more info in the commit message, like PCIe Gen, lane
> info, IP revision etc...
>
>> Signed-off-by: Mrinmay Sarkar <quic_msarkar@quicinc.com>
>> ---
>>   arch/arm64/boot/dts/qcom/sa8775p.dtsi | 45 +++++++++++++++++++++++++++++++++++
>>   1 file changed, 45 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
>> index 9f4f58e8..5571131 100644
>> --- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
>> @@ -2600,4 +2600,49 @@
>>   
>>   		status = "disabled";
>>   	};
>> +
>> +	pcie0_ep: pcie-ep@1c00000 {
>> +		compatible = "qcom,sa8775p-pcie-ep";
>> +		reg = <0x0 0x01c00000 0x0 0x3000>,
>> +		      <0x0 0x40000000 0x0 0xf20>,
>> +		      <0x0 0x40000f20 0x0 0xa8>,
>> +		      <0x0 0x40001000 0x0 0x4000>,
>> +		      <0x0 0x40200000 0x0 0x100000>,
>> +		      <0x0 0x01c03000 0x0 0x1000>,
>> +		      <0x0 0x40005000 0x0 0x2000>;
>> +		reg-names = "parf", "dbi", "elbi", "atu", "addr_space",
>> +			    "mmio", "dma";
>> +
>> +		clocks = <&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>;
>> +
>> +		clock-names = "aux",
>> +			      "cfg",
>> +			      "bus_master",
>> +			      "bus_slave",
>> +			      "slave_q2a";
>> +
>> +		interrupts = <GIC_SPI 306 IRQ_TYPE_LEVEL_HIGH>,
>> +			     <GIC_SPI 147 IRQ_TYPE_LEVEL_HIGH>,
>> +			     <GIC_SPI 630 IRQ_TYPE_LEVEL_HIGH>;
>> +
>> +		interrupt-names = "global", "doorbell", "dma";
>> +
>> +		interconnects = <&pcie_anoc MASTER_PCIE_0 0 &mc_virt SLAVE_EBI1 0>,
>> +				<&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_PCIE_0 0>;
>> +		interconnect-names = "pcie-mem", "cpu-pcie";
>> +
> Don't you need iommu property?
>
>> +		resets = <&gcc GCC_PCIE_0_BCR>;
>> +		reset-names = "core";
>> +		power-domains = <&gcc PCIE_0_GDSC>;
>> +		phys = <&pcie0_phy>;
>> +		phy-names = "pciephy";
>> +		max-link-speed = <3>;
> Gen 3?
there is some stability issue with gen4 so going with gen3 as of now.
Will update once issue is resolved.

Thanks,
Mrinmay
>> +		num-lanes = <2>;
> Only 2 lanes? Or the other one has 4 lanes?
>
> - Mani
pcie0 has lane2 and pcie1 has lane4 configuration.

Thanks,
Mrinmay
>> +
>> +		status = "disabled";
>> +	};
>>   };
>> -- 
>> 2.7.4
>>
Konrad Dybcio Oct. 11, 2023, 11:35 a.m. UTC | #3 
On 10/11/23 12:44, Mrinmay Sarkar wrote:
> 
> On 9/21/2023 3:18 PM, Manivannan Sadhasivam wrote:
>> On Wed, Sep 20, 2023 at 07:25:12PM +0530, Mrinmay Sarkar wrote:
>>> Add ep pcie dtsi node for pcie0 controller found on sa8775p platform.
>>>
>> It would be good to add more info in the commit message, like PCIe 
>> Gen, lane
>> info, IP revision etc...
>>
>>> Signed-off-by: Mrinmay Sarkar <quic_msarkar@quicinc.com>
>>> ---
[...]

>>> +        max-link-speed = <3>;
>> Gen 3?
> there is some stability issue with gen4 so going with gen3 as of now.
> Will update once issue is resolved.
That's something that should have definitely been mentioned in the 
commit message..

Please try resolving this first, if it ends up requiring bindings 
changes (missing clocks or whatever), it will be a pain.

Konrad
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
index 9f4f58e8..5571131 100644
--- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi
+++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
@@ -2600,4 +2600,49 @@ 
 
 		status = "disabled";
 	};
+
+	pcie0_ep: pcie-ep@1c00000 {
+		compatible = "qcom,sa8775p-pcie-ep";
+		reg = <0x0 0x01c00000 0x0 0x3000>,
+		      <0x0 0x40000000 0x0 0xf20>,
+		      <0x0 0x40000f20 0x0 0xa8>,
+		      <0x0 0x40001000 0x0 0x4000>,
+		      <0x0 0x40200000 0x0 0x100000>,
+		      <0x0 0x01c03000 0x0 0x1000>,
+		      <0x0 0x40005000 0x0 0x2000>;
+		reg-names = "parf", "dbi", "elbi", "atu", "addr_space",
+			    "mmio", "dma";
+
+		clocks = <&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>;
+
+		clock-names = "aux",
+			      "cfg",
+			      "bus_master",
+			      "bus_slave",
+			      "slave_q2a";
+
+		interrupts = <GIC_SPI 306 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 147 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 630 IRQ_TYPE_LEVEL_HIGH>;
+
+		interrupt-names = "global", "doorbell", "dma";
+
+		interconnects = <&pcie_anoc MASTER_PCIE_0 0 &mc_virt SLAVE_EBI1 0>,
+				<&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_PCIE_0 0>;
+		interconnect-names = "pcie-mem", "cpu-pcie";
+
+		resets = <&gcc GCC_PCIE_0_BCR>;
+		reset-names = "core";
+		power-domains = <&gcc PCIE_0_GDSC>;
+		phys = <&pcie0_phy>;
+		phy-names = "pciephy";
+		max-link-speed = <3>;
+		num-lanes = <2>;
+
+		status = "disabled";
+	};
 };