xref: /freebsd/sys/contrib/device-tree/Bindings/mips/img/pistachio.txt (revision 8ddb146abcdf061be9f2c0db7e391697dafad85c)
1Imagination Pistachio SoC
2=========================
3
4Required properties:
5--------------------
6 - compatible: Must include "img,pistachio".
7
8CPU nodes:
9----------
10A "cpus" node is required.  Required properties:
11 - #address-cells: Must be 1.
12 - #size-cells: Must be 0.
13A CPU sub-node is also required for at least CPU 0.  Since the topology may
14be probed via CPS, it is not necessary to specify secondary CPUs.  Required
15propertis:
16 - device_type: Must be "cpu".
17 - compatible: Must be "mti,interaptiv".
18 - reg: CPU number.
19 - clocks: Must include the CPU clock.  See ../../clock/clock-bindings.txt for
20   details on clock bindings.
21Example:
22	cpus {
23		#address-cells = <1>;
24		#size-cells = <0>;
25
26		cpu0: cpu@0 {
27			device_type = "cpu";
28			compatible = "mti,interaptiv";
29			reg = <0>;
30			clocks = <&clk_core CLK_MIPS>;
31		};
32	};
33
34
35Boot protocol:
36--------------
37In accordance with the MIPS UHI specification[1], the bootloader must pass the
38following arguments to the kernel:
39 - $a0: -2.
40 - $a1: KSEG0 address of the flattened device-tree blob.
41
42[1] http://prplfoundation.org/wiki/MIPS_documentation
43