1 KEYMILE bfticu Chassis Management FPGA 1 KEYMILE bfticu Chassis Management FPGA
2 2
3 The bfticu is a multifunction device that mana 3 The bfticu is a multifunction device that manages the whole chassis.
4 Its main functionality is to collect IRQs from 4 Its main functionality is to collect IRQs from the whole chassis and signals
5 them to a single controller. 5 them to a single controller.
6 6
7 Required properties: 7 Required properties:
8 - compatible: "keymile,bfticu" 8 - compatible: "keymile,bfticu"
9 - interrupt-controller: the bfticu FPGA is an 9 - interrupt-controller: the bfticu FPGA is an interrupt controller
10 - interrupts: the main IRQ line to signal the 10 - interrupts: the main IRQ line to signal the collected IRQs
11 - #interrupt-cells : is 2 and their usage is c 11 - #interrupt-cells : is 2 and their usage is compliant to the 2 cells variant
12 of Documentation/devicetree/bindings/interru 12 of Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
>> 13 - interrupt-parent: the parent IRQ ctrl the main IRQ is connected to
13 - reg: access on the parent local bus (chip se 14 - reg: access on the parent local bus (chip select, offset in chip select, size)
14 15
15 Example: 16 Example:
16 17
17 chassis-mgmt@3,0 { 18 chassis-mgmt@3,0 {
18 compatible = "keymile,bfticu"; 19 compatible = "keymile,bfticu";
19 interrupt-controller; 20 interrupt-controller;
20 #interrupt-cells = <2>; 21 #interrupt-cells = <2>;
21 reg = <3 0 0x100>; 22 reg = <3 0 0x100>;
22 interrupt-parent = <&mpic>; 23 interrupt-parent = <&mpic>;
23 interrupts = <6 1 0 0>; 24 interrupts = <6 1 0 0>;
24 }; 25 };
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