Document Amazon's Annapurna Labs PCIe host bridge.
Signed-off-by: Jonathan Chocron <jon...@amazon.com>
---
.../devicetree/bindings/pci/pcie-al.txt | 45 +++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 46 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pci/pcie-al.txt
diff --git a/Documentation/devicetree/bindings/pci/pcie-al.txt
b/Documentation/devicetree/bindings/pci/pcie-al.txt
new file mode 100644
index 000000000000..d92cc529490e
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/pcie-al.txt
@@ -0,0 +1,45 @@
+* Amazon Annapurna Labs PCIe host bridge
+
+Annapurna Labs' PCIe Host Controller is based on the Synopsys DesignWare
+PCI core.
+It shares common functions with the PCIe DesignWare core driver and 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-pcie"
+
+- 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 {
+ compatible = "amazon,al-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_main GIC_SPI 41
IRQ_TYPE_LEVEL_HIGH>; /* INTa */
+ ranges = <0x02000000 0x0 0xc0010000 0x0 0xc0010000 0x0
0x07ff0000>;
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 5a6137df3f0e..d555beb794bb 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12205,6 +12205,7 @@ PCIE DRIVER FOR ANNAPURNA LABS
M: Jonathan Chocron <jon...@amazon.com>
L: linux-...@vger.kernel.org
S: Maintained
+F: Documentation/devicetree/bindings/pci/pcie-al.txt
F: drivers/pci/controller/dwc/pcie-al.c
PCIE DRIVER FOR AMLOGIC MESON
--
2.17.1
