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

Z.q. Hou
2019-08-16T04:17:43Z

Hi Xiaowei,

> -----Original Message-----
> From: Xiaowei Bao <xiaowei.bao@nxp.com>
> Sent: 2019年8月6日 14:16
> To: bhelgaas@google.com; robh+dt@kernel.org; mark.rutland@arm.com;
> shawnguo@kernel.org; Leo Li <leoyang.li@nxp.com>; kishon@ti.com;
> lorenzo.pieralisi@arm.com; arnd@arndb.de; gregkh@linuxfoundation.org;
> M.h. Lian <minghuan.lian@nxp.com>; Mingkai Hu <mingkai.hu@nxp.com>;
> Z.q. Hou <zhiqiang.hou@nxp.com>; Roy Zang <roy.zang@nxp.com>;
> kstewart@linuxfoundation.org; pombredanne@nexb.com;
> shawn.lin@rock-chips.com; linux-pci@vger.kernel.org;
> devicetree@vger.kernel.org; linux-kernel@vger.kernel.org;
> linux-arm-kernel@lists.infradead.org; linuxppc-dev@lists.ozlabs.org
> Cc: Xiaowei Bao <xiaowei.bao@nxp.com>; Z.q. Hou
> <zhiqiang.hou@nxp.com>
> 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@nxp.com>
> Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
> ---
> 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