diff options
Diffstat (limited to 'Documentation/devicetree')
4 files changed, 154 insertions, 9 deletions
diff --git a/Documentation/devicetree/bindings/pci/amlogic,meson-pcie.txt b/Documentation/devicetree/bindings/pci/amlogic,meson-pcie.txt new file mode 100644 index 000000000000..12b18f82d441 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/amlogic,meson-pcie.txt @@ -0,0 +1,70 @@ +Amlogic Meson AXG DWC PCIE SoC controller + +Amlogic Meson PCIe host controller is based on the Synopsys DesignWare PCI core. +It shares common functions with the PCIe DesignWare core driver and +inherits common properties defined in +Documentation/devicetree/bindings/pci/designware-pci.txt. + +Additional properties are described here: + +Required properties: +- compatible: + should contain "amlogic,axg-pcie" to identify the core. +- reg: + should contain the configuration address space. +- reg-names: Must be + - "elbi" External local bus interface registers + - "cfg" Meson specific registers + - "phy" Meson PCIE PHY registers + - "config" PCIe configuration space +- reset-gpios: The GPIO to generate PCIe PERST# assert and deassert signal. +- clocks: Must contain an entry for each entry in clock-names. +- clock-names: Must include the following entries: + - "pclk" PCIe GEN 100M PLL clock + - "port" PCIe_x(A or B) RC clock gate + - "general" PCIe Phy clock + - "mipi" PCIe_x(A or B) 100M ref clock gate +- resets: phandle to the reset lines. +- reset-names: must contain "phy" "port" and "apb" + - "phy" Share PHY reset + - "port" Port A or B reset + - "apb" Share APB reset +- device_type: + should be "pci". As specified in designware-pcie.txt + + +Example configuration: + + pcie: pcie@f9800000 { + compatible = "amlogic,axg-pcie", "snps,dw-pcie"; + reg = <0x0 0xf9800000 0x0 0x400000 + 0x0 0xff646000 0x0 0x2000 + 0x0 0xff644000 0x0 0x2000 + 0x0 0xf9f00000 0x0 0x100000>; + reg-names = "elbi", "cfg", "phy", "config"; + reset-gpios = <&gpio GPIOX_19 GPIO_ACTIVE_HIGH>; + interrupts = <GIC_SPI 177 IRQ_TYPE_EDGE_RISING>; + #interrupt-cells = <1>; + interrupt-map-mask = <0 0 0 0>; + interrupt-map = <0 0 0 0 &gic GIC_SPI 179 IRQ_TYPE_EDGE_RISING>; + bus-range = <0x0 0xff>; + #address-cells = <3>; + #size-cells = <2>; + device_type = "pci"; + ranges = <0x82000000 0 0 0x0 0xf9c00000 0 0x00300000>; + + clocks = <&clkc CLKID_USB + &clkc CLKID_MIPI_ENABLE + &clkc CLKID_PCIE_A + &clkc CLKID_PCIE_CML_EN0>; + clock-names = "general", + "mipi", + "pclk", + "port"; + resets = <&reset RESET_PCIE_PHY>, + <&reset RESET_PCIE_A>, + <&reset RESET_PCIE_APB>; + reset-names = "phy", + "port", + "apb"; + }; diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt index f37494d5a7be..d514c1f2365f 100644 --- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt +++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt @@ -41,7 +41,9 @@ Optional properties: Additional required properties for imx6sx-pcie: - clock names: Must include the following additional entries: - "pcie_inbound_axi" -- power-domains: Must be set to a phandle pointing to the PCIE_PHY power domain +- power-domains: Must be set to phandles pointing to the DISPLAY and + PCIE_PHY power domains +- power-domain-names: Must be "pcie", "pcie_phy" Additional required properties for imx7d-pcie: - power-domains: Must be set to a phandle pointing to PCIE_PHY power domain diff --git a/Documentation/devicetree/bindings/pci/mediatek-pcie.txt b/Documentation/devicetree/bindings/pci/mediatek-pcie.txt index 20227a875ac8..92437a366e5f 100644 --- a/Documentation/devicetree/bindings/pci/mediatek-pcie.txt +++ b/Documentation/devicetree/bindings/pci/mediatek-pcie.txt @@ -65,7 +65,6 @@ Required properties: explanation. - ranges: Sub-ranges distributed from the PCIe controller node. An empty property is sufficient. -- num-lanes: Number of lanes to use for this port. Examples for MT7623: @@ -118,7 +117,6 @@ Examples for MT7623: interrupt-map-mask = <0 0 0 0>; interrupt-map = <0 0 0 0 &sysirq GIC_SPI 193 IRQ_TYPE_LEVEL_LOW>; ranges; - num-lanes = <1>; }; pcie@1,0 { @@ -129,7 +127,6 @@ Examples for MT7623: interrupt-map-mask = <0 0 0 0>; interrupt-map = <0 0 0 0 &sysirq GIC_SPI 194 IRQ_TYPE_LEVEL_LOW>; ranges; - num-lanes = <1>; }; pcie@2,0 { @@ -140,7 +137,6 @@ Examples for MT7623: interrupt-map-mask = <0 0 0 0>; interrupt-map = <0 0 0 0 &sysirq GIC_SPI 195 IRQ_TYPE_LEVEL_LOW>; ranges; - num-lanes = <1>; }; }; @@ -172,7 +168,6 @@ Examples for MT2712: #size-cells = <2>; #interrupt-cells = <1>; ranges; - num-lanes = <1>; interrupt-map-mask = <0 0 0 7>; interrupt-map = <0 0 0 1 &pcie_intc0 0>, <0 0 0 2 &pcie_intc0 1>, @@ -191,7 +186,6 @@ Examples for MT2712: #size-cells = <2>; #interrupt-cells = <1>; ranges; - num-lanes = <1>; interrupt-map-mask = <0 0 0 7>; interrupt-map = <0 0 0 1 &pcie_intc1 0>, <0 0 0 2 &pcie_intc1 1>, @@ -245,7 +239,6 @@ Examples for MT7622: #size-cells = <2>; #interrupt-cells = <1>; ranges; - num-lanes = <1>; interrupt-map-mask = <0 0 0 7>; interrupt-map = <0 0 0 1 &pcie_intc0 0>, <0 0 0 2 &pcie_intc0 1>, @@ -264,7 +257,6 @@ Examples for MT7622: #size-cells = <2>; #interrupt-cells = <1>; ranges; - num-lanes = <1>; interrupt-map-mask = <0 0 0 7>; interrupt-map = <0 0 0 1 &pcie_intc1 0>, <0 0 0 2 &pcie_intc1 1>, diff --git a/Documentation/devicetree/bindings/pci/uniphier-pcie.txt b/Documentation/devicetree/bindings/pci/uniphier-pcie.txt new file mode 100644 index 000000000000..1fa2c5906d4d --- /dev/null +++ b/Documentation/devicetree/bindings/pci/uniphier-pcie.txt @@ -0,0 +1,81 @@ +Socionext UniPhier PCIe host controller bindings + +This describes the devicetree bindings for PCIe host controller implemented +on Socionext UniPhier SoCs. + +UniPhier PCIe host controller is based on the Synopsys DesignWare PCI core. +It shares common functions with the PCIe DesignWare core driver and inherits +common properties defined in +Documentation/devicetree/bindings/pci/designware-pcie.txt. + +Required properties: +- compatible: Should be "socionext,uniphier-pcie". +- reg: Specifies offset and length of the register set for the device. + According to the reg-names, appropriate register sets are required. +- reg-names: Must include the following entries: + "dbi" - controller configuration registers + "link" - SoC-specific glue layer registers + "config" - PCIe configuration space +- clocks: A phandle to the clock gate for PCIe glue layer including + the host controller. +- resets: A phandle to the reset line for PCIe glue layer including + the host controller. +- interrupts: A list of interrupt specifiers. According to the + interrupt-names, appropriate interrupts are required. +- interrupt-names: Must include the following entries: + "dma" - DMA interrupt + "msi" - MSI interrupt + +Optional properties: +- phys: A phandle to generic PCIe PHY. According to the phy-names, appropriate + phys are required. +- phy-names: Must be "pcie-phy". + +Required sub-node: +- legacy-interrupt-controller: Specifies interrupt controller for legacy PCI + interrupts. + +Required properties for legacy-interrupt-controller: +- interrupt-controller: identifies the node as an interrupt controller. +- #interrupt-cells: specifies the number of cells needed to encode an + interrupt source. The value must be 1. +- interrupt-parent: Phandle to the parent interrupt controller. +- interrupts: An interrupt specifier for legacy interrupt. + +Example: + + pcie: pcie@66000000 { + compatible = "socionext,uniphier-pcie", "snps,dw-pcie"; + status = "disabled"; + reg-names = "dbi", "link", "config"; + reg = <0x66000000 0x1000>, <0x66010000 0x10000>, + <0x2fff0000 0x10000>; + #address-cells = <3>; + #size-cells = <2>; + clocks = <&sys_clk 24>; + resets = <&sys_rst 24>; + num-lanes = <1>; + num-viewport = <1>; + bus-range = <0x0 0xff>; + device_type = "pci"; + ranges = + /* downstream I/O */ + <0x81000000 0 0x00000000 0x2ffe0000 0 0x00010000 + /* non-prefetchable memory */ + 0x82000000 0 0x00000000 0x20000000 0 0x0ffe0000>; + #interrupt-cells = <1>; + interrupt-names = "dma", "msi"; + interrupts = <0 224 4>, <0 225 4>; + interrupt-map-mask = <0 0 0 7>; + interrupt-map = <0 0 0 1 &pcie_intc 0>, /* INTA */ + <0 0 0 2 &pcie_intc 1>, /* INTB */ + <0 0 0 3 &pcie_intc 2>, /* INTC */ + <0 0 0 4 &pcie_intc 3>; /* INTD */ + + pcie_intc: legacy-interrupt-controller { + interrupt-controller; + #interrupt-cells = <1>; + interrupt-parent = <&gic>; + interrupts = <0 226 4>; + }; + }; |