| Message ID | 1493890376-6713-3-git-send-email-ryder.lee@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
On Thu, May 04, 2017 at 05:32:56PM +0800, Ryder Lee wrote: > Add documentation for PCIe host driver available in MT7623 > series SoCs. > > Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> > --- > .../bindings/pci/mediatek,mt7623-pcie.txt | 149 +++++++++++++++++++++ > 1 file changed, 149 insertions(+) > create mode 100644 Documentation/devicetree/bindings/pci/mediatek,mt7623-pcie.txt > > diff --git a/Documentation/devicetree/bindings/pci/mediatek,mt7623-pcie.txt b/Documentation/devicetree/bindings/pci/mediatek,mt7623-pcie.txt > new file mode 100644 > index 0000000..9c5d5a7 > --- /dev/null > +++ b/Documentation/devicetree/bindings/pci/mediatek,mt7623-pcie.txt > @@ -0,0 +1,149 @@ > +Mediatek Gen2 PCIe controller which is available on MT7623 series SoCs > + > +PCIe subsys supports single root complex (RC) with 3 Root Ports. Each root > +ports supports a Gen2 1-lane Link and has PIPE interface to PHY. > + > +Required properties: > +- compatible: Should contain "mediatek,mt7623-pcie". > +- device_type: Must be "pci" > +- reg: Base addresses and lengths of the PCIe controller. > +- #address-cells: Address representation for root ports (must be 3) > +- #size-cells: Size representation for root ports (must be 2) > +- #interrupt-cells: Size representation for interrupts (must be 1) > +- interrupts: Three interrupt outputs of the controller. Must contain an > + entry for each entry in the interrupt-names property. > +- interrupt-names: Must include the following names > + - "pcie-int0" > + - "pcie-int1" > + - "pcie-int2" > +- 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: > + - free_ck :for reference clock of PCIe subsys > + - sys_ck0 :for clock of Port0 > + - sys_ck1 :for clock of Port1 > + - sys_ck2 :for clock of Port2 > +- resets: Must contain an entry for each entry in reset-names. > + See ../reset/reset.txt for details. > +- reset-names: Must include the following entries: > + - pcie-rst0 :port0 reset > + - pcie-rst1 :port1 reset > + - pcie-rst2 :port2 reset > +- phys: list of PHY specifiers (used by generic PHY framework). > +- phy-names : must be "pcie-phy0", "pcie-phy1", "pcie-phyN".. based on the > + number of PHYs as specified in *phys* property. > +- power-domains: A phandle and power domain specifier pair to the power domain > + which is responsible for collapsing and restoring power to the peripheral. > +- bus-range: Range of bus numbers associated with this controller. > +- ranges: > + - The first three entries are expected to translate the addresses for the root > + port registers, which are referenced by the assigned-addresses property of > + the root port nodes (see below). > + - The remaining entries setup the mapping for the standard I/O and memory > + regions. > + Please refer to the standard PCI bus binding document for a more detailed > + explanation. > + > +In addition, the device tree node must have sub-nodes describing each > +PCIe port interface, having the following mandatory properties: > + > +Required properties: > +- device_type: Must be "pci" > +- assigned-addresses: Address and size of the port configuration registers > +- reg: Only the first four bytes are used to refer to the correct bus number > + and device number. > +- #address-cells: Must be 3 > +- #size-cells: Must be 2 > +- #interrupt-cells: 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. > +- 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: > + > + hifsys: syscon@1a000000 { > + compatible = "mediatek,mt7623-hifsys", "syscon"; > + reg = <0 0x1a000000 0 0x1000>; > + #clock-cells = <1>; > + #reset-cells = <1>; > + }; > + > + pcie: pcie-controller@1a140000 { > + compatible = "mediatek,mt7623-pcie"; > + device_type = "pci"; > + reg = <0 0x1a140000 0 0x1000>; /* PCIe shared registers */ > + #address-cells = <3>; > + #size-cells = <2>; > + #interrupt-cells = <1>; > + interrupts = <GIC_SPI 193 IRQ_TYPE_LEVEL_LOW>, > + <GIC_SPI 194 IRQ_TYPE_LEVEL_LOW>, > + <GIC_SPI 195 IRQ_TYPE_LEVEL_LOW>; > + interrupt-names = "pcie-int0", "pcie-int1", "pcie-int2"; > + interrupt-map-mask = <0xf800 0 0 0>; > + interrupt-map = <0x0000 0 0 0 &gic GIC_SPI 193 IRQ_TYPE_NONE>, > + <0x0800 0 0 0 &gic GIC_SPI 194 IRQ_TYPE_NONE>, > + <0x1000 0 0 0 &gic GIC_SPI 195 IRQ_TYPE_NONE>; > + clocks = <&topckgen CLK_TOP_ETHIF_SEL>, > + <&hifsys CLK_HIFSYS_PCIE0>, > + <&hifsys CLK_HIFSYS_PCIE1>, > + <&hifsys CLK_HIFSYS_PCIE2>; > + clock-names = "free_ck", "sys_ck0", "sys_ck1", "sys_ck2"; > + resets = <&hifsys MT2701_HIFSYS_PCIE0_RST>, > + <&hifsys MT2701_HIFSYS_PCIE1_RST>, > + <&hifsys MT2701_HIFSYS_PCIE2_RST>; > + reset-names = "pcie-rst0", "pcie-rst1", "pcie-rst2"; > + phys = <&pcie0_phy>, <&pcie1_phy>, <&pcie2_phy>; > + phy-names = "pcie-phy0", "pcie-phy1", "pcie-phy2"; > + power-domains = <&scpsys MT2701_POWER_DOMAIN_HIF>; > + bus-range = <0x00 0xff>; > + ranges = <0x82000000 0 0x1a142000 0 0x1a142000 0 0x1000 /* Port0 registers */ > + 0x82000000 0 0x1a143000 0 0x1a143000 0 0x1000 /* Port1 registers */ > + 0x82000000 0 0x1a144000 0 0x1a144000 0 0x1000 /* Port2 registers */ > + 0x81000000 0 0x1a160000 0 0x1a160000 0 0x00010000 /* I/O space */ > + 0x83000000 0 0x60000000 0 0x60000000 0 0x10000000>; /* memory space */ > + > + pcie@1,0 { Your unit addresses appear to be off by 1. This one should be 0,0. With those fixed, Acked-by: Rob Herring <robh@kernel.org>
diff --git a/Documentation/devicetree/bindings/pci/mediatek,mt7623-pcie.txt b/Documentation/devicetree/bindings/pci/mediatek,mt7623-pcie.txt new file mode 100644 index 0000000..9c5d5a7 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/mediatek,mt7623-pcie.txt @@ -0,0 +1,149 @@ +Mediatek Gen2 PCIe controller which is available on MT7623 series SoCs + +PCIe subsys supports single root complex (RC) with 3 Root Ports. Each root +ports supports a Gen2 1-lane Link and has PIPE interface to PHY. + +Required properties: +- compatible: Should contain "mediatek,mt7623-pcie". +- device_type: Must be "pci" +- reg: Base addresses and lengths of the PCIe controller. +- #address-cells: Address representation for root ports (must be 3) +- #size-cells: Size representation for root ports (must be 2) +- #interrupt-cells: Size representation for interrupts (must be 1) +- interrupts: Three interrupt outputs of the controller. Must contain an + entry for each entry in the interrupt-names property. +- interrupt-names: Must include the following names + - "pcie-int0" + - "pcie-int1" + - "pcie-int2" +- 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: + - free_ck :for reference clock of PCIe subsys + - sys_ck0 :for clock of Port0 + - sys_ck1 :for clock of Port1 + - sys_ck2 :for clock of Port2 +- resets: Must contain an entry for each entry in reset-names. + See ../reset/reset.txt for details. +- reset-names: Must include the following entries: + - pcie-rst0 :port0 reset + - pcie-rst1 :port1 reset + - pcie-rst2 :port2 reset +- phys: list of PHY specifiers (used by generic PHY framework). +- phy-names : must be "pcie-phy0", "pcie-phy1", "pcie-phyN".. based on the + number of PHYs as specified in *phys* property. +- power-domains: A phandle and power domain specifier pair to the power domain + which is responsible for collapsing and restoring power to the peripheral. +- bus-range: Range of bus numbers associated with this controller. +- ranges: + - The first three entries are expected to translate the addresses for the root + port registers, which are referenced by the assigned-addresses property of + the root port nodes (see below). + - The remaining entries setup the mapping for the standard I/O and memory + regions. + Please refer to the standard PCI bus binding document for a more detailed + explanation. + +In addition, the device tree node must have sub-nodes describing each +PCIe port interface, having the following mandatory properties: + +Required properties: +- device_type: Must be "pci" +- assigned-addresses: Address and size of the port configuration registers +- reg: Only the first four bytes are used to refer to the correct bus number + and device number. +- #address-cells: Must be 3 +- #size-cells: Must be 2 +- #interrupt-cells: 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. +- 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: + + hifsys: syscon@1a000000 { + compatible = "mediatek,mt7623-hifsys", "syscon"; + reg = <0 0x1a000000 0 0x1000>; + #clock-cells = <1>; + #reset-cells = <1>; + }; + + pcie: pcie-controller@1a140000 { + compatible = "mediatek,mt7623-pcie"; + device_type = "pci"; + reg = <0 0x1a140000 0 0x1000>; /* PCIe shared registers */ + #address-cells = <3>; + #size-cells = <2>; + #interrupt-cells = <1>; + interrupts = <GIC_SPI 193 IRQ_TYPE_LEVEL_LOW>, + <GIC_SPI 194 IRQ_TYPE_LEVEL_LOW>, + <GIC_SPI 195 IRQ_TYPE_LEVEL_LOW>; + interrupt-names = "pcie-int0", "pcie-int1", "pcie-int2"; + interrupt-map-mask = <0xf800 0 0 0>; + interrupt-map = <0x0000 0 0 0 &gic GIC_SPI 193 IRQ_TYPE_NONE>, + <0x0800 0 0 0 &gic GIC_SPI 194 IRQ_TYPE_NONE>, + <0x1000 0 0 0 &gic GIC_SPI 195 IRQ_TYPE_NONE>; + clocks = <&topckgen CLK_TOP_ETHIF_SEL>, + <&hifsys CLK_HIFSYS_PCIE0>, + <&hifsys CLK_HIFSYS_PCIE1>, + <&hifsys CLK_HIFSYS_PCIE2>; + clock-names = "free_ck", "sys_ck0", "sys_ck1", "sys_ck2"; + resets = <&hifsys MT2701_HIFSYS_PCIE0_RST>, + <&hifsys MT2701_HIFSYS_PCIE1_RST>, + <&hifsys MT2701_HIFSYS_PCIE2_RST>; + reset-names = "pcie-rst0", "pcie-rst1", "pcie-rst2"; + phys = <&pcie0_phy>, <&pcie1_phy>, <&pcie2_phy>; + phy-names = "pcie-phy0", "pcie-phy1", "pcie-phy2"; + power-domains = <&scpsys MT2701_POWER_DOMAIN_HIF>; + bus-range = <0x00 0xff>; + ranges = <0x82000000 0 0x1a142000 0 0x1a142000 0 0x1000 /* Port0 registers */ + 0x82000000 0 0x1a143000 0 0x1a143000 0 0x1000 /* Port1 registers */ + 0x82000000 0 0x1a144000 0 0x1a144000 0 0x1000 /* Port2 registers */ + 0x81000000 0 0x1a160000 0 0x1a160000 0 0x00010000 /* I/O space */ + 0x83000000 0 0x60000000 0 0x60000000 0 0x10000000>; /* memory space */ + + pcie@1,0 { + device_type = "pci"; + assigned-addresses = <0x82000000 0 0x1a142000 0 0x1000>; + reg = <0x0000 0 0 0 0>; + #address-cells = <3>; + #size-cells = <2>; + #interrupt-cells = <1>; + interrupt-map-mask = <0 0 0 0>; + interrupt-map = <0 0 0 0 &gic GIC_SPI 193 IRQ_TYPE_NONE>; + ranges; + num-lanes = <1>; + }; + + pcie@2,0 { + device_type = "pci"; + assigned-addresses = <0x82000800 0 0x1a143000 0 0x1000>; + reg = <0x0800 0 0 0 0>; + #address-cells = <3>; + #size-cells = <2>; + #interrupt-cells = <1>; + interrupt-map-mask = <0 0 0 0>; + interrupt-map = <0 0 0 0 &gic GIC_SPI 194 IRQ_TYPE_NONE>; + ranges; + num-lanes = <1>; + }; + + pcie@3,0 { + device_type = "pci"; + assigned-addresses = <0x82001000 0 0x1a144000 0 0x1000>; + reg = <0x1000 0 0 0 0>; + #address-cells = <3>; + #size-cells = <2>; + #interrupt-cells = <1>; + interrupt-map-mask = <0 0 0 0>; + interrupt-map = <0 0 0 0 &gic GIC_SPI 195 IRQ_TYPE_NONE>; + ranges; + num-lanes = <1>; + }; + };
Add documentation for PCIe host driver available in MT7623 series SoCs. Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> --- .../bindings/pci/mediatek,mt7623-pcie.txt | 149 +++++++++++++++++++++ 1 file changed, 149 insertions(+) create mode 100644 Documentation/devicetree/bindings/pci/mediatek,mt7623-pcie.txt