1 Synaptics SoC Device Tree Bindings 1 Synaptics SoC Device Tree Bindings
2 2
3 According to https://www.synaptics.com/company 3 According to https://www.synaptics.com/company/news/conexant-marvell
4 Synaptics has acquired the Multimedia Solution 4 Synaptics has acquired the Multimedia Solutions Business of Marvell, so
5 berlin SoCs are now Synaptics' SoCs now. 5 berlin SoCs are now Synaptics' SoCs now.
6 6
7 ---------------------------------------------- 7 ---------------------------------------------------------------
8 8
9 Boards with a SoC of the Marvell Berlin family 9 Boards with a SoC of the Marvell Berlin family, e.g. Armada 1500
10 shall have the following properties: 10 shall have the following properties:
11 11
12 * Required root node properties: 12 * Required root node properties:
13 compatible: must contain "marvell,berlin" 13 compatible: must contain "marvell,berlin"
14 14
15 In addition, the above compatible shall be ext 15 In addition, the above compatible shall be extended with the specific
16 SoC and board used. Currently known SoC compat 16 SoC and board used. Currently known SoC compatibles are:
17 "marvell,berlin2" for Marvell Armada 17 "marvell,berlin2" for Marvell Armada 1500 (BG2, 88DE3100),
18 "marvell,berlin2cd" for Marvell Armada 18 "marvell,berlin2cd" for Marvell Armada 1500-mini (BG2CD, 88DE3005)
19 "marvell,berlin2ct" for Marvell Armada 19 "marvell,berlin2ct" for Marvell Armada ? (BG2CT, 88DE????)
20 "marvell,berlin2q" for Marvell Armada 20 "marvell,berlin2q" for Marvell Armada 1500-pro (BG2Q, 88DE3114)
21 "marvell,berlin3" for Marvell Armada 21 "marvell,berlin3" for Marvell Armada ? (BG3, 88DE????)
22 22
23 * Example: 23 * Example:
24 24
25 / { 25 / {
26 model = "Sony NSZ-GS7"; 26 model = "Sony NSZ-GS7";
27 compatible = "sony,nsz-gs7", "marvell, 27 compatible = "sony,nsz-gs7", "marvell,berlin2", "marvell,berlin";
28 28
29 ... 29 ...
30 } 30 }
31 31
32 * Marvell Berlin CPU control bindings 32 * Marvell Berlin CPU control bindings
33 33
34 CPU control register allows various operations 34 CPU control register allows various operations on CPUs, like resetting them
35 independently. 35 independently.
36 36
37 Required properties: 37 Required properties:
38 - compatible: should be "marvell,berlin-cpu-ct 38 - compatible: should be "marvell,berlin-cpu-ctrl"
39 - reg: address and length of the register set 39 - reg: address and length of the register set
40 40
41 Example: 41 Example:
42 42
43 cpu-ctrl@f7dd0000 { 43 cpu-ctrl@f7dd0000 {
44 compatible = "marvell,berlin-cpu-ctrl" 44 compatible = "marvell,berlin-cpu-ctrl";
45 reg = <0xf7dd0000 0x10000>; 45 reg = <0xf7dd0000 0x10000>;
46 }; 46 };
47 47
48 * Marvell Berlin2 chip control binding 48 * Marvell Berlin2 chip control binding
49 49
50 Marvell Berlin SoCs have a chip control regist 50 Marvell Berlin SoCs have a chip control register set providing several
51 individual registers dealing with pinmux, padm 51 individual registers dealing with pinmux, padmux, clock, reset, and secondary
52 CPU boot address. Unfortunately, the individua 52 CPU boot address. Unfortunately, the individual registers are spread among the
53 chip control registers, so there should be a s 53 chip control registers, so there should be a single DT node only providing the
54 different functions which are described below. 54 different functions which are described below.
55 55
56 Required properties: 56 Required properties:
57 - compatible: 57 - compatible:
58 * the first and second values must be: 58 * the first and second values must be:
59 "simple-mfd", "syscon" 59 "simple-mfd", "syscon"
60 - reg: address and length of following registe 60 - reg: address and length of following register sets for
61 BG2/BG2CD: chip control register set 61 BG2/BG2CD: chip control register set
62 BG2Q: chip control register set and cpu pll 62 BG2Q: chip control register set and cpu pll registers
63 63
64 * Marvell Berlin2 system control binding 64 * Marvell Berlin2 system control binding
65 65
66 Marvell Berlin SoCs have a system control regi 66 Marvell Berlin SoCs have a system control register set providing several
67 individual registers dealing with pinmux, padm 67 individual registers dealing with pinmux, padmux, and reset.
68 68
69 Required properties: 69 Required properties:
70 - compatible: 70 - compatible:
71 * the first and second values must be: 71 * the first and second values must be:
72 "simple-mfd", "syscon" 72 "simple-mfd", "syscon"
73 - reg: address and length of the system contro 73 - reg: address and length of the system control register set
74 74
75 Example: 75 Example:
76 76
77 chip: chip-control@ea0000 { 77 chip: chip-control@ea0000 {
78 compatible = "simple-mfd", "syscon"; 78 compatible = "simple-mfd", "syscon";
79 reg = <0xea0000 0x400>; 79 reg = <0xea0000 0x400>;
80 80
81 /* sub-device nodes */ 81 /* sub-device nodes */
82 }; 82 };
83 83
84 sysctrl: system-controller@d000 { 84 sysctrl: system-controller@d000 {
85 compatible = "simple-mfd", "syscon"; 85 compatible = "simple-mfd", "syscon";
86 reg = <0xd000 0x100>; 86 reg = <0xd000 0x100>;
87 87
88 /* sub-device nodes */ 88 /* sub-device nodes */
89 }; 89 };
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.