Re: [PATCH v3 3/5] arm64: dts: agilex: add dtsi for PCIe Root Port

Bjorn Helgaas
2025-01-08T18:37:41Z

On Wed, Jan 08, 2025 at 10:59:07AM -0600, Matthew Gerlach wrote:
> Add the base device tree for support of the PCIe Root Port
> for the Agilex family of chips.
>
> Signed-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
> ---
> v3:
> - Remove accepted patches from patch set.
>
> v2:
> - Rename node to fix schema check error.
> ---
> .../intel/socfpga_agilex_pcie_root_port.dtsi | 55 +++++++++++++++++++
> 1 file changed, 55 insertions(+)
> create mode 100644 arch/arm64/boot/dts/intel/socfpga_agilex_pcie_root_port.dtsi
>
> diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex_pcie_root_port.dtsi b/arch/arm64/boot/dts/intel/socfpga_agilex_pcie_root_port.dtsi
> new file mode 100644
> index 000000000000..50f131f5791b
> --- /dev/null
> +++ b/arch/arm64/boot/dts/intel/socfpga_agilex_pcie_root_port.dtsi
> @@ -0,0 +1,55 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2024, Intel Corporation
> + */
> +&soc0 {
> + aglx_hps_bridges: fpga-bus@80000000 {
> + compatible = "simple-bus";
> + reg = <0x80000000 0x20200000>,
> + <0xf9000000 0x00100000>;
> + reg-names = "axi_h2f", "axi_h2f_lw";
> + #address-cells = <0x2>;
> + #size-cells = <0x1>;
> + ranges = <0x00000000 0x00000000 0x80000000 0x00040000>,
> + <0x00000000 0x10000000 0x90100000 0x0ff00000>,
> + <0x00000000 0x20000000 0xa0000000 0x00200000>,
> + <0x00000001 0x00010000 0xf9010000 0x00008000>,
> + <0x00000001 0x00018000 0xf9018000 0x00000080>,
> + <0x00000001 0x00018080 0xf9018080 0x00000010>;
> +
> + pcie_0_pcie_aglx: pcie@200000000 {
> + reg = <0x00000000 0x10000000 0x10000000>,
> + <0x00000001 0x00010000 0x00008000>,
> + <0x00000000 0x20000000 0x00200000>;
> + reg-names = "Txs", "Cra", "Hip";
> + interrupt-parent = <&intc>;
> + interrupts = <GIC_SPI 0x14 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-controller;
> + #interrupt-cells = <0x1>;
> + device_type = "pci";
> + bus-range = <0x0000000 0x000000ff>;

I don't think this bus-range is needed since
pci_parse_request_of_pci_ranges() defaults to 00-ff when bus-range is
absent.