diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0202-dt-bindings-pci-Add-DT-docs-for-Brcmstb-PCIe-device.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0202-dt-bindings-pci-Add-DT-docs-for-Brcmstb-PCIe-device.patch | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0202-dt-bindings-pci-Add-DT-docs-for-Brcmstb-PCIe-device.patch b/target/linux/bcm27xx/patches-5.4/950-0202-dt-bindings-pci-Add-DT-docs-for-Brcmstb-PCIe-device.patch new file mode 100644 index 0000000000..d4ff3165b3 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0202-dt-bindings-pci-Add-DT-docs-for-Brcmstb-PCIe-device.patch @@ -0,0 +1,77 @@ +From 417e4745f7470ca8b9809056485eb7a81305019b Mon Sep 17 00:00:00 2001 +From: Jim Quinlan <jim2101024@gmail.com> +Date: Mon, 15 Jan 2018 18:28:39 -0500 +Subject: [PATCH] dt-bindings: pci: Add DT docs for Brcmstb PCIe device + +The DT bindings description of the Brcmstb PCIe device is described. This +node can be used by almost all Broadcom settop box chips, using +ARM, ARM64, or MIPS CPU architectures. + +Signed-off-by: Jim Quinlan <jim2101024@gmail.com> +--- + .../devicetree/bindings/pci/brcmstb-pcie.txt | 59 +++++++++++++++++++ + 1 file changed, 59 insertions(+) + create mode 100644 Documentation/devicetree/bindings/pci/brcmstb-pcie.txt + +--- /dev/null ++++ b/Documentation/devicetree/bindings/pci/brcmstb-pcie.txt +@@ -0,0 +1,59 @@ ++Brcmstb PCIe Host Controller Device Tree Bindings ++ ++Required Properties: ++- compatible ++ "brcm,bcm7425-pcie" -- for 7425 family MIPS-based SOCs. ++ "brcm,bcm7435-pcie" -- for 7435 family MIPS-based SOCs. ++ "brcm,bcm7445-pcie" -- for 7445 and later ARM based SOCs (not including ++ the 7278). ++ "brcm,bcm7278-pcie" -- for 7278 family ARM-based SOCs. ++ ++- reg -- the register start address and length for the PCIe reg block. ++- interrupts -- two interrupts are specified; the first interrupt is for ++ the PCI host controller and the second is for MSI if the built-in ++ MSI controller is to be used. ++- interrupt-names -- names of the interrupts (above): "pcie" and "msi". ++- #address-cells -- set to <3>. ++- #size-cells -- set to <2>. ++- #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. ++- ranges: ranges for the PCI memory and I/O regions. ++- linux,pci-domain -- should be unique per host controller. ++ ++Optional Properties: ++- clocks -- phandle of pcie clock. ++- clock-names -- set to "sw_pcie" if clocks is used. ++- dma-ranges -- Specifies the inbound memory mapping regions when ++ an "identity map" is not possible. ++- msi-controller -- this property is typically specified to have the ++ PCIe controller use its internal MSI controller. ++- msi-parent -- set to use an external MSI interrupt controller. ++- brcm,enable-ssc -- (boolean) indicates usage of spread-spectrum clocking. ++- max-link-speed -- (integer) indicates desired generation of link: ++ 1 => 2.5 Gbps (gen1), 2 => 5.0 Gbps (gen2), 3 => 8.0 Gbps (gen3). ++ ++Example Node: ++ ++pcie0: pcie@f0460000 { ++ reg = <0x0 0xf0460000 0x0 0x9310>; ++ interrupts = <0x0 0x0 0x4>; ++ compatible = "brcm,bcm7445-pcie"; ++ #address-cells = <3>; ++ #size-cells = <2>; ++ ranges = <0x02000000 0x00000000 0x00000000 0x00000000 0xc0000000 0x00000000 0x08000000 ++ 0x02000000 0x00000000 0x08000000 0x00000000 0xc8000000 0x00000000 0x08000000>; ++ #interrupt-cells = <1>; ++ interrupt-map-mask = <0 0 0 7>; ++ interrupt-map = <0 0 0 1 &intc 0 47 3 ++ 0 0 0 2 &intc 0 48 3 ++ 0 0 0 3 &intc 0 49 3 ++ 0 0 0 4 &intc 0 50 3>; ++ clocks = <&sw_pcie0>; ++ clock-names = "sw_pcie"; ++ msi-parent = <&pcie0>; /* use PCIe's internal MSI controller */ ++ msi-controller; /* use PCIe's internal MSI controller */ ++ brcm,ssc; ++ max-link-speed = <1>; ++ linux,pci-domain = <0>; ++ }; |