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authorBjorn Helgaas <bhelgaas@google.com>2019-09-24 00:10:17 +0300
committerBjorn Helgaas <bhelgaas@google.com>2019-09-24 00:10:17 +0300
commitaf47f25f33f7f628cb50a82bc60b8ad1677626a2 (patch)
tree8800166bc3418a614ce9763cdd85e2b087715523 /Documentation
parent0ca0ef1042f49c4b457ca6cb48ebb5d1c0bcf003 (diff)
parent0b24134f7888175c9638e6fd1900e23e44fc172f (diff)
downloadlinux-af47f25f33f7f628cb50a82bc60b8ad1677626a2.tar.xz
Merge branch 'remotes/lorenzo/pci/al'
- Add driver for Amazon Annapurna Labs PCIe controller (Jonathan Chocron) - Disable MSI-X since Annapurna Labs advertises it, but it's broken (Jonathan Chocron) - Disable VPD since Annapurna Labs advertises it, but it's broken (Jonathan Chocron) - Add ACS quirk since Annapurna Labs doesn't support ACS but does provide some equivalent protections (Ali Saidi) * remotes/lorenzo/pci/al: PCI: dwc: Add validation that PCIe core is set to correct mode PCI: dwc: al: Add Amazon Annapurna Labs PCIe controller driver dt-bindings: PCI: Add Amazon's Annapurna Labs PCIe host bridge binding PCI: Add quirk to disable MSI-X support for Amazon's Annapurna Labs Root Port PCI/VPD: Prevent VPD access for Amazon's Annapurna Labs Root Port PCI: Add ACS quirk for Amazon Annapurna Labs root ports PCI: Add Amazon's Annapurna Labs vendor ID # Conflicts: # drivers/pci/quirks.c
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/pci/pcie-al.txt46
1 files changed, 46 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pci/pcie-al.txt b/Documentation/devicetree/bindings/pci/pcie-al.txt
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+* Amazon Annapurna Labs PCIe host bridge
+
+Amazon's Annapurna Labs PCIe Host Controller is based on the Synopsys DesignWare
+PCI core. It inherits common properties defined in
+Documentation/devicetree/bindings/pci/designware-pcie.txt.
+
+Properties of the host controller node that differ from it are:
+
+- compatible:
+ Usage: required
+ Value type: <stringlist>
+ Definition: Value should contain
+ - "amazon,al-alpine-v2-pcie" for alpine_v2
+ - "amazon,al-alpine-v3-pcie" for alpine_v3
+
+- reg:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: Register ranges as listed in the reg-names property
+
+- reg-names:
+ Usage: required
+ Value type: <stringlist>
+ Definition: Must include the following entries
+ - "config" PCIe ECAM space
+ - "controller" AL proprietary registers
+ - "dbi" Designware PCIe registers
+
+Example:
+
+ pcie-external0: pcie@fb600000 {
+ compatible = "amazon,al-alpine-v3-pcie";
+ reg = <0x0 0xfb600000 0x0 0x00100000
+ 0x0 0xfd800000 0x0 0x00010000
+ 0x0 0xfd810000 0x0 0x00001000>;
+ reg-names = "config", "controller", "dbi";
+ bus-range = <0 255>;
+ device_type = "pci";
+ #address-cells = <3>;
+ #size-cells = <2>;
+ #interrupt-cells = <1>;
+ interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-map-mask = <0x00 0 0 7>;
+ interrupt-map = <0x0000 0 0 1 &gic GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>; /* INTa */
+ ranges = <0x02000000 0x0 0xc0010000 0x0 0xc0010000 0x0 0x07ff0000>;
+ };