RE: [PATCHv3 2/3] arm64: dts: ls1028a: Add PCIe controller DT nodes

[Z.q. Hou]

Hi Xiaowei,

> -----Original Message-----
> From: Xiaowei Bao <xiaowei.bao@xxxxxxx>
> Sent: 2019年8月6日 14:16
> To: bhelgaas@xxxxxxxxxx; robh+dt@xxxxxxxxxx; mark.rutland@xxxxxxx;
> shawnguo@xxxxxxxxxx; Leo Li <leoyang.li@xxxxxxx>; kishon@xxxxxx;
> lorenzo.pieralisi@xxxxxxx; arnd@xxxxxxxx; gregkh@xxxxxxxxxxxxxxxxxxx;
> M.h. Lian <minghuan.lian@xxxxxxx>; Mingkai Hu <mingkai.hu@xxxxxxx>;
> Z.q. Hou <zhiqiang.hou@xxxxxxx>; Roy Zang <roy.zang@xxxxxxx>;
> kstewart@xxxxxxxxxxxxxxxxxxx; pombredanne@xxxxxxxx;
> shawn.lin@xxxxxxxxxxxxxx; linux-pci@xxxxxxxxxxxxxxx;
> devicetree@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
> linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; linuxppc-dev@xxxxxxxxxxxxxxxx
> Cc: Xiaowei Bao <xiaowei.bao@xxxxxxx>; Z.q. Hou
> <zhiqiang.hou@xxxxxxx>
> Subject: [PATCHv3 2/3] arm64: dts: ls1028a: Add PCIe controller DT nodes
> 
> LS1028a implements 2 PCIe 3.0 controllers.
> 
> Signed-off-by: Xiaowei Bao <xiaowei.bao@xxxxxxx>
> Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@xxxxxxx>
> ---
> v2:
>  - Fix up the legacy INTx allocate failed issue.
> v3:
>  - no change.
> 
>  arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi | 52
> ++++++++++++++++++++++++++
>  1 file changed, 52 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> index aef5b06..0b542ed 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> +++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> @@ -503,6 +503,58 @@
>  			status = "disabled";
>  		};
> 
> +		pcie@3400000 {
> +			compatible = "fsl,ls1028a-pcie";
> +			reg = <0x00 0x03400000 0x0 0x00100000   /* controller
> registers */
> +			       0x80 0x00000000 0x0 0x00002000>; /* configuration
> space */
> +			reg-names = "regs", "config";
> +			interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>, /* PME
> interrupt */
> +				     <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>; /* aer
> interrupt */
> +			interrupt-names = "pme", "aer";
> +			#address-cells = <3>;
> +			#size-cells = <2>;
> +			device_type = "pci";
> +			dma-coherent;
> +			num-lanes = <4>;

Remove the num-lanes, it is not needed by Layerscape PCIe controllers. see: http://patchwork.ozlabs.org/project/linux-pci/list/?series=124488

> +			bus-range = <0x0 0xff>;
> +			ranges = <0x81000000 0x0 0x00000000 0x80 0x00010000 0x0
> 0x00010000   /* downstream I/O */
> +				  0x82000000 0x0 0x40000000 0x80 0x40000000 0x0
> 0x40000000>; /* non-prefetchable memory */
> +			msi-parent = <&its>;
> +			#interrupt-cells = <1>;
> +			interrupt-map-mask = <0 0 0 7>;
> +			interrupt-map = <0000 0 0 1 &gic 0 0 GIC_SPI 109
> IRQ_TYPE_LEVEL_HIGH>,
> +					<0000 0 0 2 &gic 0 0 GIC_SPI 110
> IRQ_TYPE_LEVEL_HIGH>,
> +					<0000 0 0 3 &gic 0 0 GIC_SPI 111
> IRQ_TYPE_LEVEL_HIGH>,
> +					<0000 0 0 4 &gic 0 0 GIC_SPI 112
> IRQ_TYPE_LEVEL_HIGH>;
> +			status = "disabled";
> +		};
> +
> +		pcie@3500000 {
> +			compatible = "fsl,ls1028a-pcie";
> +			reg = <0x00 0x03500000 0x0 0x00100000   /* controller
> registers */
> +			       0x88 0x00000000 0x0 0x00002000>; /* configuration
> space */
> +			reg-names = "regs", "config";
> +			interrupts = <GIC_SPI 113 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 114 IRQ_TYPE_LEVEL_HIGH>;
> +			interrupt-names = "pme", "aer";
> +			#address-cells = <3>;
> +			#size-cells = <2>;
> +			device_type = "pci";
> +			dma-coherent;
> +			num-lanes = <4>;

Ditto

> +			bus-range = <0x0 0xff>;
> +			ranges = <0x81000000 0x0 0x00000000 0x88 0x00010000 0x0
> 0x00010000   /* downstream I/O */
> +				  0x82000000 0x0 0x40000000 0x88 0x40000000 0x0
> 0x40000000>; /* non-prefetchable memory */
> +			msi-parent = <&its>;
> +			#interrupt-cells = <1>;
> +			interrupt-map-mask = <0 0 0 7>;
> +			interrupt-map = <0000 0 0 1 &gic 0 0 GIC_SPI 114
> IRQ_TYPE_LEVEL_HIGH>,
> +					<0000 0 0 2 &gic 0 0 GIC_SPI 115
> IRQ_TYPE_LEVEL_HIGH>,
> +					<0000 0 0 3 &gic 0 0 GIC_SPI 116
> IRQ_TYPE_LEVEL_HIGH>,
> +					<0000 0 0 4 &gic 0 0 GIC_SPI 117
> IRQ_TYPE_LEVEL_HIGH>;
> +			status = "disabled";
> +		};
> +
>  		pcie@1f0000000 { /* Integrated Endpoint Root Complex */
>  			compatible = "pci-host-ecam-generic";
>  			reg = <0x01 0xf0000000 0x0 0x100000>;
> --
> 2.9.5