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From 4a4f869ec58ed8910b9b2e68d0eee50957e9bb20 Mon Sep 17 00:00:00 2001
From: John Crispin <john@phrozen.org>
Date: Mon, 25 Jun 2018 15:52:10 +0200
Subject: [PATCH 17/33] dt-bindings: PCI: qcom,ar7100: adds binding doc
With the driver being converted from platform_data to pure OF, we need to
also add some docs.
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: John Crispin <john@phrozen.org>
---
.../devicetree/bindings/pci/qcom,ar7100-pci.txt | 38 ++++++++++++++++++++++
1 file changed, 38 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pci/qcom,ar7100-pci.txt
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/qcom,ar7100-pci.txt
@@ -0,0 +1,38 @@
+* Qualcomm Atheros AR7100 PCI express root complex
+
+Required properties:
+- compatible: should contain "qcom,ar7100-pci" to identify the core.
+- reg: Should contain the register ranges as listed in the reg-names property.
+- reg-names: Definition: Must include the following entries
+ - "cfg_base" IO Memory
+- #address-cells: set to <3>
+- #size-cells: set to <2>
+- ranges: ranges for the PCI memory and I/O regions
+- interrupt-map-mask and interrupt-map: standard PCI
+ properties to define the mapping of the PCIe interface to interrupt
+ numbers.
+- #interrupt-cells: set to <1>
+- interrupt-controller: define to enable the builtin IRQ cascade.
+
+Optional properties:
+- interrupt-parent: phandle to the MIPS IRQ controller
+
+* Example for ar7100
+ pcie-controller@180c0000 {
+ compatible = "qca,ar7100-pci";
+ #address-cells = <3>;
+ #size-cells = <2>;
+ bus-range = <0x0 0x0>;
+ reg = <0x17010000 0x100>;
+ reg-names = "cfg_base";
+ ranges = <0x2000000 0 0x10000000 0x10000000 0 0x07000000
+ 0x1000000 0 0x00000000 0x00000000 0 0x00000001>;
+ interrupt-parent = <&cpuintc>;
+ interrupts = <2>;
+
+ interrupt-controller;
+ #interrupt-cells = <1>;
+
+ interrupt-map-mask = <0 0 0 1>;
+ interrupt-map = <0 0 0 0 &pcie0 0>;
+ };
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