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[v2,5/8] dt-bindings: PCI: Add Amazon's Annapurna Labs PCIe host bridge binding

Message ID 20190718094718.25083-1-jonnyc@amazon.com (mailing list archive)
State Superseded, archived
Headers show
Series Amazon's Annapurna Labs DT-based PCIe host controller driver | expand

Commit Message

Chocron, Jonathan July 18, 2019, 9:47 a.m. UTC 
Document Amazon's Annapurna Labs PCIe host bridge.

Signed-off-by: Jonathan Chocron <jonnyc@amazon.com>
---
 .../devicetree/bindings/pci/pcie-al.txt       | 45 +++++++++++++++++++
 MAINTAINERS                                   |  3 +-
 2 files changed, 47 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/devicetree/bindings/pci/pcie-al.txt
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Patch

diff --git a/Documentation/devicetree/bindings/pci/pcie-al.txt b/Documentation/devicetree/bindings/pci/pcie-al.txt
new file mode 100644
index 000000000000..89876190eb5a
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/pcie-al.txt
@@ -0,0 +1,45 @@ 
+* Amazon Annapurna Labs PCIe host bridge
+
+Amazon's 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: pcie@fb600000 {
+		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 GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>; /* INTa */
+		ranges = <0x02000000 0x0 0xc0010000 0x0 0xc0010000 0x0 0x07ff0000>;
+	};
diff --git a/MAINTAINERS b/MAINTAINERS
index 5a6137df3f0e..29cca14a05a6 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12201,10 +12201,11 @@  T:	git git://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/pci.git/
 S:	Supported
 F:	drivers/pci/controller/
 
-PCIE DRIVER FOR ANNAPURNA LABS
+PCIE DRIVER FOR AMAZON ANNAPURNA LABS
 M:	Jonathan Chocron <jonnyc@amazon.com>
 L:	linux-pci@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