xref: /freebsd/sys/contrib/device-tree/Bindings/arm/hisilicon/hisilicon-low-pin-count.txt (revision 5f4c09dd85bff675e0ca63c55ea3c517e0fddfcc)
1Hisilicon Hip06 Low Pin Count device
2  Hisilicon Hip06 SoCs implement a Low Pin Count (LPC) controller, which
3  provides I/O access to some legacy ISA devices.
4  Hip06 is based on arm64 architecture where there is no I/O space. So, the
5  I/O ports here are not CPU addresses, and there is no 'ranges' property in
6  LPC device node.
7
8Required properties:
9- compatible:  value should be as follows:
10	(a) "hisilicon,hip06-lpc"
11	(b) "hisilicon,hip07-lpc"
12- #address-cells: must be 2 which stick to the ISA/EISA binding doc.
13- #size-cells: must be 1 which stick to the ISA/EISA binding doc.
14- reg: base memory range where the LPC register set is mapped.
15
16Note:
17  The node name before '@' must be "isa" to represent the binding stick to the
18  ISA/EISA binding specification.
19
20Example:
21
22isa@a01b0000 {
23	compatible = "hisilicon,hip06-lpc";
24	#address-cells = <2>;
25	#size-cells = <1>;
26	reg = <0x0 0xa01b0000 0x0 0x1000>;
27
28	ipmi0: bt@e4 {
29		compatible = "ipmi-bt";
30		device_type = "ipmi";
31		reg = <0x01 0xe4 0x04>;
32	};
33};
34