diff options
author | Jiri Kosina <jkosina@suse.cz> | 2013-12-19 15:08:03 +0100 |
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committer | Jiri Kosina <jkosina@suse.cz> | 2013-12-19 15:08:32 +0100 |
commit | e23c34bb41da65f354fb7eee04300c56ee48f60c (patch) | |
tree | 549fbe449d55273b81ef104a9755109bf4ae7817 /Documentation/devicetree/bindings/pci/mvebu-pci.txt | |
parent | b481c2cb3534c85dca625973b33eba15f9af3e4c (diff) | |
parent | 319e2e3f63c348a9b66db4667efa73178e18b17d (diff) |
Merge branch 'master' into for-next
Sync with Linus' tree to be able to apply fixes on top of newer things
in tree (efi-stub).
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'Documentation/devicetree/bindings/pci/mvebu-pci.txt')
-rw-r--r-- | Documentation/devicetree/bindings/pci/mvebu-pci.txt | 155 |
1 files changed, 119 insertions, 36 deletions
diff --git a/Documentation/devicetree/bindings/pci/mvebu-pci.txt b/Documentation/devicetree/bindings/pci/mvebu-pci.txt index f8d405897a94..08c716b2c6b6 100644 --- a/Documentation/devicetree/bindings/pci/mvebu-pci.txt +++ b/Documentation/devicetree/bindings/pci/mvebu-pci.txt @@ -1,20 +1,62 @@ * Marvell EBU PCIe interfaces Mandatory properties: + - compatible: one of the following values: marvell,armada-370-pcie marvell,armada-xp-pcie + marvell,dove-pcie marvell,kirkwood-pcie - #address-cells, set to <3> - #size-cells, set to <2> - #interrupt-cells, set to <1> - bus-range: PCI bus numbers covered - device_type, set to "pci" -- ranges: ranges for the PCI memory and I/O regions, as well as the - MMIO registers to control the PCIe interfaces. +- ranges: ranges describing the MMIO registers to control the PCIe + interfaces, and ranges describing the MBus windows needed to access + the memory and I/O regions of each PCIe interface. +- msi-parent: Link to the hardware entity that serves as the Message + Signaled Interrupt controller for this PCI controller. + +The ranges describing the MMIO registers have the following layout: + + 0x82000000 0 r MBUS_ID(0xf0, 0x01) r 0 s + +where: + + * r is a 32-bits value that gives the offset of the MMIO + registers of this PCIe interface, from the base of the internal + registers. + + * s is a 32-bits value that give the size of this MMIO + registers area. This range entry translates the '0x82000000 0 r' PCI + address into the 'MBUS_ID(0xf0, 0x01) r' CPU address, which is part + of the internal register window (as identified by MBUS_ID(0xf0, + 0x01)). + +The ranges describing the MBus windows have the following layout: + + 0x8t000000 s 0 MBUS_ID(w, a) 0 1 0 + +where: + + * t is the type of the MBus window (as defined by the standard PCI DT + bindings), 1 for I/O and 2 for memory. -In addition, the Device Tree node must have sub-nodes describing each + * s is the PCI slot that corresponds to this PCIe interface + + * w is the 'target ID' value for the MBus window + + * a the 'attribute' value for the MBus window. + +Since the location and size of the different MBus windows is not fixed in +hardware, and only determined in runtime, those ranges cover the full first +4 GB of the physical address space, and do not translate into a valid CPU +address. + +In addition, the device tree node must have sub-nodes describing each PCIe interface, having the following mandatory properties: + - reg: used only for interrupt mapping, so only the first four bytes are used to refer to the correct bus number and device number. - assigned-addresses: reference to the MMIO registers used to control @@ -26,7 +68,8 @@ PCIe interface, having the following mandatory properties: - #address-cells, set to <3> - #size-cells, set to <2> - #interrupt-cells, set to <1> -- ranges, empty property. +- ranges, translating the MBus windows ranges of the parent node into + standard PCI addresses. - interrupt-map-mask and interrupt-map, standard PCI properties to define the mapping of the PCIe interface to interrupt numbers. @@ -34,6 +77,8 @@ and the following optional properties: - marvell,pcie-lane: the physical PCIe lane number, for ports having multiple lanes. If this property is not found, we assume that the value is 0. +- reset-gpios: optional gpio to PERST# +- reset-delay-us: delay in us to wait after reset de-assertion Example: @@ -46,44 +91,73 @@ pcie-controller { #size-cells = <2>; bus-range = <0x00 0xff>; + msi-parent = <&mpic>; - ranges = <0x82000000 0 0xd0040000 0xd0040000 0 0x00002000 /* Port 0.0 registers */ - 0x82000000 0 0xd0042000 0xd0042000 0 0x00002000 /* Port 2.0 registers */ - 0x82000000 0 0xd0044000 0xd0044000 0 0x00002000 /* Port 0.1 registers */ - 0x82000000 0 0xd0048000 0xd0048000 0 0x00002000 /* Port 0.2 registers */ - 0x82000000 0 0xd004c000 0xd004c000 0 0x00002000 /* Port 0.3 registers */ - 0x82000000 0 0xd0080000 0xd0080000 0 0x00002000 /* Port 1.0 registers */ - 0x82000000 0 0xd0082000 0xd0082000 0 0x00002000 /* Port 3.0 registers */ - 0x82000000 0 0xd0084000 0xd0084000 0 0x00002000 /* Port 1.1 registers */ - 0x82000000 0 0xd0088000 0xd0088000 0 0x00002000 /* Port 1.2 registers */ - 0x82000000 0 0xd008c000 0xd008c000 0 0x00002000 /* Port 1.3 registers */ - 0x82000000 0 0xe0000000 0xe0000000 0 0x08000000 /* non-prefetchable memory */ - 0x81000000 0 0 0xe8000000 0 0x00100000>; /* downstream I/O */ + ranges = + <0x82000000 0 0x40000 MBUS_ID(0xf0, 0x01) 0x40000 0 0x00002000 /* Port 0.0 registers */ + 0x82000000 0 0x42000 MBUS_ID(0xf0, 0x01) 0x42000 0 0x00002000 /* Port 2.0 registers */ + 0x82000000 0 0x44000 MBUS_ID(0xf0, 0x01) 0x44000 0 0x00002000 /* Port 0.1 registers */ + 0x82000000 0 0x48000 MBUS_ID(0xf0, 0x01) 0x48000 0 0x00002000 /* Port 0.2 registers */ + 0x82000000 0 0x4c000 MBUS_ID(0xf0, 0x01) 0x4c000 0 0x00002000 /* Port 0.3 registers */ + 0x82000000 0 0x80000 MBUS_ID(0xf0, 0x01) 0x80000 0 0x00002000 /* Port 1.0 registers */ + 0x82000000 0 0x82000 MBUS_ID(0xf0, 0x01) 0x82000 0 0x00002000 /* Port 3.0 registers */ + 0x82000000 0 0x84000 MBUS_ID(0xf0, 0x01) 0x84000 0 0x00002000 /* Port 1.1 registers */ + 0x82000000 0 0x88000 MBUS_ID(0xf0, 0x01) 0x88000 0 0x00002000 /* Port 1.2 registers */ + 0x82000000 0 0x8c000 MBUS_ID(0xf0, 0x01) 0x8c000 0 0x00002000 /* Port 1.3 registers */ + 0x82000000 0x1 0 MBUS_ID(0x04, 0xe8) 0 1 0 /* Port 0.0 MEM */ + 0x81000000 0x1 0 MBUS_ID(0x04, 0xe0) 0 1 0 /* Port 0.0 IO */ + 0x82000000 0x2 0 MBUS_ID(0x04, 0xd8) 0 1 0 /* Port 0.1 MEM */ + 0x81000000 0x2 0 MBUS_ID(0x04, 0xd0) 0 1 0 /* Port 0.1 IO */ + 0x82000000 0x3 0 MBUS_ID(0x04, 0xb8) 0 1 0 /* Port 0.2 MEM */ + 0x81000000 0x3 0 MBUS_ID(0x04, 0xb0) 0 1 0 /* Port 0.2 IO */ + 0x82000000 0x4 0 MBUS_ID(0x04, 0x78) 0 1 0 /* Port 0.3 MEM */ + 0x81000000 0x4 0 MBUS_ID(0x04, 0x70) 0 1 0 /* Port 0.3 IO */ + + 0x82000000 0x5 0 MBUS_ID(0x08, 0xe8) 0 1 0 /* Port 1.0 MEM */ + 0x81000000 0x5 0 MBUS_ID(0x08, 0xe0) 0 1 0 /* Port 1.0 IO */ + 0x82000000 0x6 0 MBUS_ID(0x08, 0xd8) 0 1 0 /* Port 1.1 MEM */ + 0x81000000 0x6 0 MBUS_ID(0x08, 0xd0) 0 1 0 /* Port 1.1 IO */ + 0x82000000 0x7 0 MBUS_ID(0x08, 0xb8) 0 1 0 /* Port 1.2 MEM */ + 0x81000000 0x7 0 MBUS_ID(0x08, 0xb0) 0 1 0 /* Port 1.2 IO */ + 0x82000000 0x8 0 MBUS_ID(0x08, 0x78) 0 1 0 /* Port 1.3 MEM */ + 0x81000000 0x8 0 MBUS_ID(0x08, 0x70) 0 1 0 /* Port 1.3 IO */ + + 0x82000000 0x9 0 MBUS_ID(0x04, 0xf8) 0 1 0 /* Port 2.0 MEM */ + 0x81000000 0x9 0 MBUS_ID(0x04, 0xf0) 0 1 0 /* Port 2.0 IO */ + + 0x82000000 0xa 0 MBUS_ID(0x08, 0xf8) 0 1 0 /* Port 3.0 MEM */ + 0x81000000 0xa 0 MBUS_ID(0x08, 0xf0) 0 1 0 /* Port 3.0 IO */>; pcie@1,0 { device_type = "pci"; - assigned-addresses = <0x82000800 0 0xd0040000 0 0x2000>; + assigned-addresses = <0x82000800 0 0x40000 0 0x2000>; reg = <0x0800 0 0 0 0>; #address-cells = <3>; #size-cells = <2>; #interrupt-cells = <1>; - ranges; + ranges = <0x82000000 0 0 0x82000000 0x1 0 1 0 + 0x81000000 0 0 0x81000000 0x1 0 1 0>; interrupt-map-mask = <0 0 0 0>; interrupt-map = <0 0 0 0 &mpic 58>; marvell,pcie-port = <0>; marvell,pcie-lane = <0>; + /* low-active PERST# reset on GPIO 25 */ + reset-gpios = <&gpio0 25 1>; + /* wait 20ms for device settle after reset deassertion */ + reset-delay-us = <20000>; clocks = <&gateclk 5>; status = "disabled"; }; pcie@2,0 { device_type = "pci"; - assigned-addresses = <0x82001000 0 0xd0044000 0 0x2000>; + assigned-addresses = <0x82001000 0 0x44000 0 0x2000>; reg = <0x1000 0 0 0 0>; #address-cells = <3>; #size-cells = <2>; #interrupt-cells = <1>; - ranges; + ranges = <0x82000000 0 0 0x82000000 0x2 0 1 0 + 0x81000000 0 0 0x81000000 0x2 0 1 0>; interrupt-map-mask = <0 0 0 0>; interrupt-map = <0 0 0 0 &mpic 59>; marvell,pcie-port = <0>; @@ -94,12 +168,13 @@ pcie-controller { pcie@3,0 { device_type = "pci"; - assigned-addresses = <0x82001800 0 0xd0048000 0 0x2000>; + assigned-addresses = <0x82001800 0 0x48000 0 0x2000>; reg = <0x1800 0 0 0 0>; #address-cells = <3>; #size-cells = <2>; #interrupt-cells = <1>; - ranges; + ranges = <0x82000000 0 0 0x82000000 0x3 0 1 0 + 0x81000000 0 0 0x81000000 0x3 0 1 0>; interrupt-map-mask = <0 0 0 0>; interrupt-map = <0 0 0 0 &mpic 60>; marvell,pcie-port = <0>; @@ -110,12 +185,13 @@ pcie-controller { pcie@4,0 { device_type = "pci"; - assigned-addresses = <0x82002000 0 0xd004c000 0 0x2000>; + assigned-addresses = <0x82002000 0 0x4c000 0 0x2000>; reg = <0x2000 0 0 0 0>; #address-cells = <3>; #size-cells = <2>; #interrupt-cells = <1>; - ranges; + ranges = <0x82000000 0 0 0x82000000 0x4 0 1 0 + 0x81000000 0 0 0x81000000 0x4 0 1 0>; interrupt-map-mask = <0 0 0 0>; interrupt-map = <0 0 0 0 &mpic 61>; marvell,pcie-port = <0>; @@ -126,12 +202,13 @@ pcie-controller { pcie@5,0 { device_type = "pci"; - assigned-addresses = <0x82002800 0 0xd0080000 0 0x2000>; + assigned-addresses = <0x82002800 0 0x80000 0 0x2000>; reg = <0x2800 0 0 0 0>; #address-cells = <3>; #size-cells = <2>; #interrupt-cells = <1>; - ranges; + ranges = <0x82000000 0 0 0x82000000 0x5 0 1 0 + 0x81000000 0 0 0x81000000 0x5 0 1 0>; interrupt-map-mask = <0 0 0 0>; interrupt-map = <0 0 0 0 &mpic 62>; marvell,pcie-port = <1>; @@ -142,12 +219,13 @@ pcie-controller { pcie@6,0 { device_type = "pci"; - assigned-addresses = <0x82003000 0 0xd0084000 0 0x2000>; + assigned-addresses = <0x82003000 0 0x84000 0 0x2000>; reg = <0x3000 0 0 0 0>; #address-cells = <3>; #size-cells = <2>; #interrupt-cells = <1>; - ranges; + ranges = <0x82000000 0 0 0x82000000 0x6 0 1 0 + 0x81000000 0 0 0x81000000 0x6 0 1 0>; interrupt-map-mask = <0 0 0 0>; interrupt-map = <0 0 0 0 &mpic 63>; marvell,pcie-port = <1>; @@ -158,12 +236,13 @@ pcie-controller { pcie@7,0 { device_type = "pci"; - assigned-addresses = <0x82003800 0 0xd0088000 0 0x2000>; + assigned-addresses = <0x82003800 0 0x88000 0 0x2000>; reg = <0x3800 0 0 0 0>; #address-cells = <3>; #size-cells = <2>; #interrupt-cells = <1>; - ranges; + ranges = <0x82000000 0 0 0x82000000 0x7 0 1 0 + 0x81000000 0 0 0x81000000 0x7 0 1 0>; interrupt-map-mask = <0 0 0 0>; interrupt-map = <0 0 0 0 &mpic 64>; marvell,pcie-port = <1>; @@ -174,12 +253,13 @@ pcie-controller { pcie@8,0 { device_type = "pci"; - assigned-addresses = <0x82004000 0 0xd008c000 0 0x2000>; + assigned-addresses = <0x82004000 0 0x8c000 0 0x2000>; reg = <0x4000 0 0 0 0>; #address-cells = <3>; #size-cells = <2>; #interrupt-cells = <1>; - ranges; + ranges = <0x82000000 0 0 0x82000000 0x8 0 1 0 + 0x81000000 0 0 0x81000000 0x8 0 1 0>; interrupt-map-mask = <0 0 0 0>; interrupt-map = <0 0 0 0 &mpic 65>; marvell,pcie-port = <1>; @@ -187,14 +267,16 @@ pcie-controller { clocks = <&gateclk 12>; status = "disabled"; }; + pcie@9,0 { device_type = "pci"; - assigned-addresses = <0x82004800 0 0xd0042000 0 0x2000>; + assigned-addresses = <0x82004800 0 0x42000 0 0x2000>; reg = <0x4800 0 0 0 0>; #address-cells = <3>; #size-cells = <2>; #interrupt-cells = <1>; - ranges; + ranges = <0x82000000 0 0 0x82000000 0x9 0 1 0 + 0x81000000 0 0 0x81000000 0x9 0 1 0>; interrupt-map-mask = <0 0 0 0>; interrupt-map = <0 0 0 0 &mpic 99>; marvell,pcie-port = <2>; @@ -205,12 +287,13 @@ pcie-controller { pcie@10,0 { device_type = "pci"; - assigned-addresses = <0x82005000 0 0xd0082000 0 0x2000>; + assigned-addresses = <0x82005000 0 0x82000 0 0x2000>; reg = <0x5000 0 0 0 0>; #address-cells = <3>; #size-cells = <2>; #interrupt-cells = <1>; - ranges; + ranges = <0x82000000 0 0 0x82000000 0xa 0 1 0 + 0x81000000 0 0 0x81000000 0xa 0 1 0>; interrupt-map-mask = <0 0 0 0>; interrupt-map = <0 0 0 0 &mpic 103>; marvell,pcie-port = <3>; |