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Diffstat (limited to 'Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.txt')
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diff --git a/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.txt b/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.txt deleted file mode 100644 index b739f92da58e..000000000000 --- a/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.txt +++ /dev/null @@ -1,171 +0,0 @@ -NVIDIA Tegra PCIe controller (Synopsys DesignWare Core based) - -This PCIe host controller is based on the Synopsis Designware PCIe IP -and thus inherits all the common properties defined in designware-pcie.txt. - -Required properties: -- compatible: For Tegra19x, must contain "nvidia,tegra194-pcie". -- device_type: Must be "pci" -- power-domains: A phandle to the node that controls power to the respective - PCIe controller and a specifier name for the PCIe controller. Following are - the specifiers for the different PCIe controllers - TEGRA194_POWER_DOMAIN_PCIEX8B: C0 - TEGRA194_POWER_DOMAIN_PCIEX1A: C1 - TEGRA194_POWER_DOMAIN_PCIEX1A: C2 - TEGRA194_POWER_DOMAIN_PCIEX1A: C3 - TEGRA194_POWER_DOMAIN_PCIEX4A: C4 - TEGRA194_POWER_DOMAIN_PCIEX8A: C5 - these specifiers are defined in - "include/dt-bindings/power/tegra194-powergate.h" file. -- reg: A list of physical base address and length pairs for each set of - controller registers. Must contain an entry for each entry in the reg-names - property. -- reg-names: Must include the following entries: - "appl": Controller's application logic registers - "config": As per the definition in designware-pcie.txt - "atu_dma": iATU and DMA registers. This is where the iATU (internal Address - Translation Unit) registers of the PCIe core are made available - for SW access. - "dbi": The aperture where root port's own configuration registers are - available -- interrupts: A list of interrupt outputs of the controller. Must contain an - entry for each entry in the interrupt-names property. -- interrupt-names: Must include the following entries: - "intr": The Tegra interrupt that is asserted for controller interrupts - "msi": The Tegra interrupt that is asserted when an MSI is received -- bus-range: Range of bus numbers associated with this controller -- #address-cells: Address representation for root ports (must be 3) - - cell 0 specifies the bus and device numbers of the root port: - [23:16]: bus number - [15:11]: device number - - cell 1 denotes the upper 32 address bits and should be 0 - - cell 2 contains the lower 32 address bits and is used to translate to the - CPU address space -- #size-cells: Size representation for root ports (must be 2) -- ranges: Describes the translation of addresses for root ports and standard - PCI regions. The entries must be 7 cells each, where the first three cells - correspond to the address as described for the #address-cells property - above, the fourth and fifth cells are for the physical CPU address to - translate to and the sixth and seventh cells are as described for the - #size-cells property above. - - Entries setup the mapping for the standard I/O, memory and - prefetchable PCI regions. The first cell determines the type of region - that is setup: - - 0x81000000: I/O memory region - - 0x82000000: non-prefetchable memory region - - 0xc2000000: prefetchable memory region - Please refer to the standard PCI bus binding document for a more detailed - explanation. -- #interrupt-cells: Size representation for interrupts (must be 1) -- interrupt-map-mask and interrupt-map: Standard PCI IRQ mapping properties - Please refer to the standard PCI bus binding document for a more detailed - explanation. -- clocks: Must contain an entry for each entry in clock-names. - See ../clocks/clock-bindings.txt for details. -- clock-names: Must include the following entries: - - core -- resets: Must contain an entry for each entry in reset-names. - See ../reset/reset.txt for details. -- reset-names: Must include the following entries: - - apb - - core -- phys: Must contain a phandle to P2U PHY for each entry in phy-names. -- phy-names: Must include an entry for each active lane. - "p2u-N": where N ranges from 0 to one less than the total number of lanes -- nvidia,bpmp: Must contain a pair of phandle to BPMP controller node followed - by controller-id. Following are the controller ids for each controller. - 0: C0 - 1: C1 - 2: C2 - 3: C3 - 4: C4 - 5: C5 -- vddio-pex-ctl-supply: Regulator supply for PCIe side band signals - -Optional properties: -- pinctrl-names: A list of pinctrl state names. - It is mandatory for C5 controller and optional for other controllers. - - "default": Configures PCIe I/O for proper operation. -- pinctrl-0: phandle for the 'default' state of pin configuration. - It is mandatory for C5 controller and optional for other controllers. -- supports-clkreq: Refer to Documentation/devicetree/bindings/pci/pci.txt -- nvidia,update-fc-fixup: This is a boolean property and needs to be present to - improve performance when a platform is designed in such a way that it - satisfies at least one of the following conditions thereby enabling root - port to exchange optimum number of FC (Flow Control) credits with - downstream devices - 1. If C0/C4/C5 run at x1/x2 link widths (irrespective of speed and MPS) - 2. If C0/C1/C2/C3/C4/C5 operate at their respective max link widths and - a) speed is Gen-2 and MPS is 256B - b) speed is >= Gen-3 with any MPS -- nvidia,aspm-cmrt-us: Common Mode Restore Time for proper operation of ASPM - to be specified in microseconds -- nvidia,aspm-pwr-on-t-us: Power On time for proper operation of ASPM to be - specified in microseconds -- nvidia,aspm-l0s-entrance-latency-us: ASPM L0s entrance latency to be - specified in microseconds -- vpcie3v3-supply: A phandle to the regulator node that supplies 3.3V to the slot - if the platform has one such slot. (Ex:- x16 slot owned by C5 controller - in p2972-0000 platform). -- vpcie12v-supply: A phandle to the regulator node that supplies 12V to the slot - if the platform has one such slot. (Ex:- x16 slot owned by C5 controller - in p2972-0000 platform). - -Examples: -========= - -Tegra194: --------- - - pcie@14180000 { - compatible = "nvidia,tegra194-pcie", "snps,dw-pcie"; - power-domains = <&bpmp TEGRA194_POWER_DOMAIN_PCIEX8B>; - reg = <0x00 0x14180000 0x0 0x00020000 /* appl registers (128K) */ - 0x00 0x38000000 0x0 0x00040000 /* configuration space (256K) */ - 0x00 0x38040000 0x0 0x00040000>; /* iATU_DMA reg space (256K) */ - reg-names = "appl", "config", "atu_dma"; - - #address-cells = <3>; - #size-cells = <2>; - device_type = "pci"; - num-lanes = <8>; - linux,pci-domain = <0>; - - pinctrl-names = "default"; - pinctrl-0 = <&pex_rst_c5_out_state>, <&clkreq_c5_bi_dir_state>; - - clocks = <&bpmp TEGRA194_CLK_PEX0_CORE_0>; - clock-names = "core"; - - resets = <&bpmp TEGRA194_RESET_PEX0_CORE_0_APB>, - <&bpmp TEGRA194_RESET_PEX0_CORE_0>; - reset-names = "apb", "core"; - - interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>, /* controller interrupt */ - <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>; /* MSI interrupt */ - interrupt-names = "intr", "msi"; - - #interrupt-cells = <1>; - interrupt-map-mask = <0 0 0 0>; - interrupt-map = <0 0 0 0 &gic GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>; - - nvidia,bpmp = <&bpmp 0>; - - supports-clkreq; - nvidia,aspm-cmrt-us = <60>; - nvidia,aspm-pwr-on-t-us = <20>; - nvidia,aspm-l0s-entrance-latency-us = <3>; - - bus-range = <0x0 0xff>; - ranges = <0x81000000 0x0 0x38100000 0x0 0x38100000 0x0 0x00100000 /* downstream I/O (1MB) */ - 0x82000000 0x0 0x38200000 0x0 0x38200000 0x0 0x01E00000 /* non-prefetchable memory (30MB) */ - 0xc2000000 0x18 0x00000000 0x18 0x00000000 0x4 0x00000000>; /* prefetchable memory (16GB) */ - - vddio-pex-ctl-supply = <&vdd_1v8ao>; - vpcie3v3-supply = <&vdd_3v3_pcie>; - vpcie12v-supply = <&vdd_12v_pcie>; - - phys = <&p2u_hsio_2>, <&p2u_hsio_3>, <&p2u_hsio_4>, - <&p2u_hsio_5>; - phy-names = "p2u-0", "p2u-1", "p2u-2", "p2u-3"; - }; |