From 86314111f654310a69c9775e35e263c036031675 Mon Sep 17 00:00:00 2001 From: Chukun Pan Date: Mon, 9 Mar 2026 11:00:00 +0800 Subject: [PATCH] riscv: dts: spacemit: Add 'linux,pci-domain' to PCIe nodes for K1 The SpacemiT K1 SoC has 3 PCIe EP controller nodes. Add the 'linux,pci-domain' property to assign a PCI domain number to each of the controllers instead of assigning it randomly. This creates a stable sysfs path, allowing userspace scripts to reliably target specific PCIe devices (such as PCIe NICs). Signed-off-by: Chukun Pan Reviewed-by: Yixun Lan Link: https://lore.kernel.org/r/20260309030000.1157040-1-amadeus@jmu.edu.cn Signed-off-by: Yixun Lan --- arch/riscv/boot/dts/spacemit/k1.dtsi | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi index 529ec68e9c23..d2015201f8e5 100644 --- a/arch/riscv/boot/dts/spacemit/k1.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi @@ -1033,6 +1033,7 @@ pcie-bus { #size-cells = <2>; dma-ranges = <0x0 0x00000000 0x0 0x00000000 0x0 0x80000000>, <0x0 0xb8000000 0x1 0x38000000 0x3 0x48000000>; + pcie0: pcie@ca000000 { device_type = "pci"; compatible = "spacemit,k1-pcie"; @@ -1044,6 +1045,7 @@ pcie0: pcie@ca000000 { "atu", "config", "link"; + linux,pci-domain = <0>; #address-cells = <3>; #size-cells = <2>; ranges = <0x01000000 0x0 0x00000000 0x0 0x8f002000 0x0 0x00100000>, @@ -1087,6 +1089,7 @@ pcie1: pcie@ca400000 { "atu", "config", "link"; + linux,pci-domain = <1>; #address-cells = <3>; #size-cells = <2>; ranges = <0x01000000 0x0 0x00000000 0x0 0x9f002000 0x0 0x00100000>, @@ -1130,6 +1133,7 @@ pcie2: pcie@ca800000 { "atu", "config", "link"; + linux,pci-domain = <2>; #address-cells = <3>; #size-cells = <2>; ranges = <0x01000000 0x0 0x00000000 0x0 0xb7002000 0x0 0x00100000>,