1 %YAML 1.2
2 ---
3 $id: http://devicetree.org/schemas/bus/renesas
4 $schema: http://devicetree.org/meta-schemas/co
5
6 title: Renesas Bus State Controller (BSC)
7
8 maintainers:
9 - Geert Uytterhoeven <geert+renesas@glider.be
10
11 description: |
12 The Renesas Bus State Controller (BSC, somet
13 Bridge", or "External Bus Interface") can be
14 SoCs. It provides an external bus for conne
15 devices to the SoC, driving several chip sel
16 FLASH, Ethernet and USB.
17
18 While the BSC is a fairly simple memory-mapp
19 PM domain, and may have a gateable functiona
20 connected to the BSC can be accessed, the PM
21 must be powered on, and the functional clock
22 enabled.
23
24 The bindings for the BSC extend the bindings
25
26 allOf:
27 - $ref: simple-pm-bus.yaml#
28
29 properties:
30 compatible:
31 items:
32 - enum:
33 - renesas,bsc-r8a73a4 # R-Mobile AP
34 - renesas,bsc-sh73a0 # SH-Mobile A
35 - const: renesas,bsc
36 - {} # simple-pm-bus, but not listed her
37
38 reg:
39 maxItems: 1
40
41 interrupts:
42 maxItems: 1
43
44 required:
45 - reg
46
47 unevaluatedProperties: false
48
49 examples:
50 - |
51 #include <dt-bindings/interrupt-controller
52
53 bsc: bus@fec10000 {
54 compatible = "renesas,bsc-sh73a0", "re
55 #address-cells = <1>;
56 #size-cells = <1>;
57 ranges = <0 0 0x20000000>;
58 reg = <0xfec10000 0x400>;
59 interrupts = <0 39 IRQ_TYPE_LEVEL_HIGH
60 clocks = <&zb_clk>;
61 power-domains = <&pd_a4s>;
62 };
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