Hey all,
I'm sending this message to folks that are listed as maintainer for a platform that has some PCI / PCIe related DTS problems. These problems can be seen if you apply the following patch:
diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn index da6df1429fb8..07c65f170b82 100644 --- a/scripts/Makefile.extrawarn +++ b/scripts/Makefile.extrawarn @@ -71,8 +71,6 @@ else ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),) DTC_FLAGS += -Wno-unit_address_vs_reg DTC_FLAGS += -Wno-unit_address_format -DTC_FLAGS += -Wno-pci_bridge -DTC_FLAGS += -Wno-pci_device_bus_num DTC_FLAGS += -Wno-pci_device_reg DTC_FLAGS += -Wno-avoid_unnecessary_addr_size DTC_FLAGS += -Wno-alias_paths
Doing this would bring us slightly closer to being in-line with current Linux-kernel kbuild files, is why I bring this up. A way to fix this on sandbox for example, which also has this problem is:
diff --git a/arch/sandbox/dts/sandbox.dts b/arch/sandbox/dts/sandbox.dts index 4dd82f6a32fd..2d7db0249ebe 100644 --- a/arch/sandbox/dts/sandbox.dts +++ b/arch/sandbox/dts/sandbox.dts @@ -10,7 +10,7 @@
aliases { i2c0 = &i2c_0; - pci0 = &pci; + pci0 = &pcic; rtc0 = &rtc_0; axi0 = &axi; spi0 = &spi; @@ -52,9 +52,10 @@ pinctrl-0 = <&pinctrl_i2c0>; };
- pci: pci-controller { + pcic: pci@0 { compatible = "sandbox,pci"; device_type = "pci"; + bus-range = <0x00 0xff>; #address-cells = <3>; #size-cells = <2>; ranges = <0x02000000 0 0x10000000 0x10000000 0 0x2000 diff --git a/arch/sandbox/dts/sandbox.dtsi b/arch/sandbox/dts/sandbox.dtsi index 7bf144f53265..f7f3de784292 100644 --- a/arch/sandbox/dts/sandbox.dtsi +++ b/arch/sandbox/dts/sandbox.dtsi @@ -99,7 +99,7 @@ }; };
- pci-controller { + pci@0 { pci@1e,0 { compatible = "sandbox,pmc"; reg = <0xf000 0 0 0 0>; diff --git a/arch/sandbox/dts/sandbox64.dts b/arch/sandbox/dts/sandbox64.dts index 5c95cee9d7a9..97e33f110eef 100644 --- a/arch/sandbox/dts/sandbox64.dts +++ b/arch/sandbox/dts/sandbox64.dts @@ -10,7 +10,7 @@
aliases { i2c0 = &i2c_0; - pci0 = &pci; + pci0 = &pcic; rtc0 = &rtc_0; axi0 = &axi; spi0 = &spi; @@ -47,9 +47,10 @@ pinctrl-0 = <&pinctrl_i2c0>; };
- pci: pci-controller { + pcic: pci@0 { compatible = "sandbox,pci"; device_type = "pci"; + bus-range = <0x00 0xff>; #address-cells = <3>; #size-cells = <2>; ranges = <0x02000000 0 0x10000000 0 0x10000000 0 0x2000 diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts index c22844743143..4d3c42077858 100644 --- a/arch/sandbox/dts/test.dts +++ b/arch/sandbox/dts/test.dts @@ -463,9 +463,10 @@ compatible = "sandbox,pch"; };
- pci0: pci-controller0 { + pci0: pci@0 { compatible = "sandbox,pci"; device_type = "pci"; + bus-range = <0x00 0xff>; #address-cells = <3>; #size-cells = <2>; ranges = <0x02000000 0 0x10000000 0x10000000 0 0x2000000 @@ -531,9 +532,10 @@ }; };
- pci1: pci-controller1 { + pci1: pci@1 { compatible = "sandbox,pci"; device_type = "pci"; + bus-range = <0x00 0xff>; #address-cells = <3>; #size-cells = <2>; ranges = <0x02000000 0 0x30000000 0x30000000 0 0x2000 @@ -546,9 +548,10 @@ }; };
- pci2: pci-controller2 { + pci2: pci@2 { compatible = "sandbox,pci"; device_type = "pci"; + bus-range = <0x00 0xff>; #address-cells = <3>; #size-cells = <2>; ranges = <0x02000000 0 0x50000000 0x50000000 0 0x2000
And as these are also warnings that are normally visible in Linux. you may just need to re-sync your dts files. Thanks!