diff options
Diffstat (limited to 'Documentation')
5 files changed, 102 insertions, 49 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 512ccafa45b1..39ac9d4fad7f 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -3711,7 +3711,11 @@ [KNL, SMP] Set scheduler's default relax_domain_level. See Documentation/cgroup-v1/cpusets.txt. - reserve= [KNL,BUGS] Force the kernel to ignore some iomem area + reserve= [KNL,BUGS] Force kernel to ignore I/O ports or memory + Format: <base1>,<size1>[,<base2>,<size2>,...] + Reserve I/O ports or memory so the kernel won't use + them. If <base> is less than 0x10000, the region + is assumed to be I/O ports; otherwise it is memory. reservetop= [X86-32] Format: nn[KMG] diff --git a/Documentation/devicetree/bindings/pci/axis,artpec6-pcie.txt b/Documentation/devicetree/bindings/pci/axis,artpec6-pcie.txt index 4e4aee4439ea..979dc7b6cfe8 100644 --- a/Documentation/devicetree/bindings/pci/axis,artpec6-pcie.txt +++ b/Documentation/devicetree/bindings/pci/axis,artpec6-pcie.txt @@ -4,7 +4,10 @@ This PCIe host controller is based on the Synopsys DesignWare PCIe IP and thus inherits all the common properties defined in designware-pcie.txt. Required properties: -- compatible: "axis,artpec6-pcie", "snps,dw-pcie" +- compatible: "axis,artpec6-pcie", "snps,dw-pcie" for ARTPEC-6 in RC mode; + "axis,artpec6-pcie-ep", "snps,dw-pcie" for ARTPEC-6 in EP mode; + "axis,artpec7-pcie", "snps,dw-pcie" for ARTPEC-7 in RC mode; + "axis,artpec7-pcie-ep", "snps,dw-pcie" for ARTPEC-7 in EP mode; - reg: base addresses and lengths of the PCIe controller (DBI), the PHY controller, and configuration address space. - reg-names: Must include the following entries: diff --git a/Documentation/devicetree/bindings/pci/cdns,cdns-pcie-ep.txt b/Documentation/devicetree/bindings/pci/cdns,cdns-pcie-ep.txt new file mode 100644 index 000000000000..9a305237fa6e --- /dev/null +++ b/Documentation/devicetree/bindings/pci/cdns,cdns-pcie-ep.txt @@ -0,0 +1,22 @@ +* Cadence PCIe endpoint controller + +Required properties: +- compatible: Should contain "cdns,cdns-pcie-ep" to identify the IP used. +- reg: Should contain the controller register base address and AXI interface + region base address respectively. +- reg-names: Must be "reg" and "mem" respectively. +- cdns,max-outbound-regions: Set to maximum number of outbound regions + +Optional properties: +- max-functions: Maximum number of functions that can be configured (default 1). + +Example: + +pcie@fc000000 { + compatible = "cdns,cdns-pcie-ep"; + reg = <0x0 0xfc000000 0x0 0x01000000>, + <0x0 0x80000000 0x0 0x40000000>; + reg-names = "reg", "mem"; + cdns,max-outbound-regions = <16>; + max-functions = /bits/ 8 <8>; +}; diff --git a/Documentation/devicetree/bindings/pci/cdns,cdns-pcie-host.txt b/Documentation/devicetree/bindings/pci/cdns,cdns-pcie-host.txt new file mode 100644 index 000000000000..20a33f38f69d --- /dev/null +++ b/Documentation/devicetree/bindings/pci/cdns,cdns-pcie-host.txt @@ -0,0 +1,60 @@ +* Cadence PCIe host controller + +This PCIe controller inherits the base properties defined in +host-generic-pci.txt. + +Required properties: +- compatible: Should contain "cdns,cdns-pcie-host" to identify the IP used. +- reg: Should contain the controller register base address, PCIe configuration + window base address, and AXI interface region base address respectively. +- reg-names: Must be "reg", "cfg" and "mem" respectively. +- #address-cells: Set to <3> +- #size-cells: Set to <2> +- device_type: Set to "pci" +- ranges: Ranges for the PCI memory and I/O regions +- #interrupt-cells: Set to <1> +- interrupt-map-mask and interrupt-map: Standard PCI properties to define the + mapping of the PCIe interface to interrupt numbers. + +Optional properties: +- cdns,max-outbound-regions: Set to maximum number of outbound regions + (default 32) +- cdns,no-bar-match-nbits: Set into the no BAR match register to configure the + number of least significant bits kept during inbound (PCIe -> AXI) address + translations (default 32) +- vendor-id: The PCI vendor ID (16 bits, default is design dependent) +- device-id: The PCI device ID (16 bits, default is design dependent) + +Example: + +pcie@fb000000 { + compatible = "cdns,cdns-pcie-host"; + device_type = "pci"; + #address-cells = <3>; + #size-cells = <2>; + bus-range = <0x0 0xff>; + linux,pci-domain = <0>; + cdns,max-outbound-regions = <16>; + cdns,no-bar-match-nbits = <32>; + vendor-id = /bits/ 16 <0x17cd>; + device-id = /bits/ 16 <0x0200>; + + reg = <0x0 0xfb000000 0x0 0x01000000>, + <0x0 0x41000000 0x0 0x00001000>, + <0x0 0x40000000 0x0 0x04000000>; + reg-names = "reg", "cfg", "mem"; + + ranges = <0x02000000 0x0 0x42000000 0x0 0x42000000 0x0 0x1000000>, + <0x01000000 0x0 0x43000000 0x0 0x43000000 0x0 0x0010000>; + + #interrupt-cells = <0x1>; + + interrupt-map = <0x0 0x0 0x0 0x1 &gic 0x0 0x0 0x0 14 0x1 + 0x0 0x0 0x0 0x2 &gic 0x0 0x0 0x0 15 0x1 + 0x0 0x0 0x0 0x3 &gic 0x0 0x0 0x0 16 0x1 + 0x0 0x0 0x0 0x4 &gic 0x0 0x0 0x0 17 0x1>; + + interrupt-map-mask = <0x0 0x0 0x0 0x7>; + + msi-parent = <&its_pci>; +}; diff --git a/Documentation/devicetree/bindings/pci/samsung,exynos5440-pcie.txt b/Documentation/devicetree/bindings/pci/samsung,exynos5440-pcie.txt index 34a11bfbfb60..651d957d1051 100644 --- a/Documentation/devicetree/bindings/pci/samsung,exynos5440-pcie.txt +++ b/Documentation/devicetree/bindings/pci/samsung,exynos5440-pcie.txt @@ -6,9 +6,6 @@ and thus inherits all the common properties defined in designware-pcie.txt. Required properties: - compatible: "samsung,exynos5440-pcie" - reg: base addresses and lengths of the PCIe controller, - the PHY controller, additional register for the PHY controller. - (Registers for the PHY controller are DEPRECATED. - Use the PHY framework.) - reg-names : First name should be set to "elbi". And use the "config" instead of getting the configuration address space from "ranges". @@ -23,49 +20,8 @@ For other common properties, refer to Example: -SoC-specific DT Entry: +SoC-specific DT Entry (with using PHY framework): - pcie@290000 { - compatible = "samsung,exynos5440-pcie", "snps,dw-pcie"; - reg = <0x290000 0x1000 - 0x270000 0x1000 - 0x271000 0x40>; - interrupts = <0 20 0>, <0 21 0>, <0 22 0>; - clocks = <&clock 28>, <&clock 27>; - clock-names = "pcie", "pcie_bus"; - #address-cells = <3>; - #size-cells = <2>; - device_type = "pci"; - ranges = <0x00000800 0 0x40000000 0x40000000 0 0x00001000 /* configuration space */ - 0x81000000 0 0 0x40001000 0 0x00010000 /* downstream I/O */ - 0x82000000 0 0x40011000 0x40011000 0 0x1ffef000>; /* non-prefetchable memory */ - #interrupt-cells = <1>; - interrupt-map-mask = <0 0 0 0>; - interrupt-map = <0 0 0 0 &gic GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>; - num-lanes = <4>; - }; - - pcie@2a0000 { - compatible = "samsung,exynos5440-pcie", "snps,dw-pcie"; - reg = <0x2a0000 0x1000 - 0x272000 0x1000 - 0x271040 0x40>; - interrupts = <0 23 0>, <0 24 0>, <0 25 0>; - clocks = <&clock 29>, <&clock 27>; - clock-names = "pcie", "pcie_bus"; - #address-cells = <3>; - #size-cells = <2>; - device_type = "pci"; - ranges = <0x00000800 0 0x60000000 0x60000000 0 0x00001000 /* configuration space */ - 0x81000000 0 0 0x60001000 0 0x00010000 /* downstream I/O */ - 0x82000000 0 0x60011000 0x60011000 0 0x1ffef000>; /* non-prefetchable memory */ - #interrupt-cells = <1>; - interrupt-map-mask = <0 0 0 0>; - interrupt-map = <0 0 0 0 &gic GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>; - num-lanes = <4>; - }; - -With using PHY framework: pcie_phy0: pcie-phy@270000 { ... reg = <0x270000 0x1000>, <0x271000 0x40>; @@ -74,13 +30,21 @@ With using PHY framework: }; pcie@290000 { - ... + compatible = "samsung,exynos5440-pcie", "snps,dw-pcie"; reg = <0x290000 0x1000>, <0x40000000 0x1000>; reg-names = "elbi", "config"; + clocks = <&clock 28>, <&clock 27>; + clock-names = "pcie", "pcie_bus"; + #address-cells = <3>; + #size-cells = <2>; + device_type = "pci"; phys = <&pcie_phy0>; ranges = <0x81000000 0 0 0x60001000 0 0x00010000 0x82000000 0 0x60011000 0x60011000 0 0x1ffef000>; - ... + #interrupt-cells = <1>; + interrupt-map-mask = <0 0 0 0>; + interrupt-map = <0 0 0 0 &gic GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>; + num-lanes = <4>; }; Board-specific DT Entry: |