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Commit | Line | Data |
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e874a669 EL |
1 | Device Tree Clock bindings for arch-sunxi |
2 | ||
3 | This binding uses the common clock binding[1]. | |
4 | ||
5 | [1] Documentation/devicetree/bindings/clock/clock-bindings.txt | |
6 | ||
7 | Required properties: | |
8 | - compatible : shall be one of the following: | |
e3276998 | 9 | "allwinner,sun4i-osc-clk" - for a gatable oscillator |
d838ff33 | 10 | "allwinner,sun4i-pll1-clk" - for the main PLL clock and PLL4 |
6a721db1 | 11 | "allwinner,sun6i-a31-pll1-clk" - for the main PLL clock on A31 |
d584c133 EL |
12 | "allwinner,sun4i-pll5-clk" - for the PLL5 clock |
13 | "allwinner,sun4i-pll6-clk" - for the PLL6 clock | |
92ef67c5 | 14 | "allwinner,sun6i-a31-pll6-clk" - for the PLL6 clock on A31 |
e3276998 EL |
15 | "allwinner,sun4i-cpu-clk" - for the CPU multiplexer clock |
16 | "allwinner,sun4i-axi-clk" - for the AXI clock | |
13569a70 | 17 | "allwinner,sun4i-axi-gates-clk" - for the AXI gates |
e3276998 | 18 | "allwinner,sun4i-ahb-clk" - for the AHB clock |
4f985b4c MR |
19 | "allwinner,sun4i-ahb-gates-clk" - for the AHB gates on A10 |
20 | "allwinner,sun5i-a13-ahb-gates-clk" - for the AHB gates on A13 | |
2371dd88 | 21 | "allwinner,sun5i-a10s-ahb-gates-clk" - for the AHB gates on A10s |
1fb2e4aa | 22 | "allwinner,sun7i-a20-ahb-gates-clk" - for the AHB gates on A20 |
6a721db1 MR |
23 | "allwinner,sun6i-a31-ahb1-mux-clk" - for the AHB1 multiplexer on A31 |
24 | "allwinner,sun6i-a31-ahb1-gates-clk" - for the AHB1 gates on A31 | |
e3276998 | 25 | "allwinner,sun4i-apb0-clk" - for the APB0 clock |
4f985b4c MR |
26 | "allwinner,sun4i-apb0-gates-clk" - for the APB0 gates on A10 |
27 | "allwinner,sun5i-a13-apb0-gates-clk" - for the APB0 gates on A13 | |
2371dd88 | 28 | "allwinner,sun5i-a10s-apb0-gates-clk" - for the APB0 gates on A10s |
1fb2e4aa | 29 | "allwinner,sun7i-a20-apb0-gates-clk" - for the APB0 gates on A20 |
e3276998 EL |
30 | "allwinner,sun4i-apb1-clk" - for the APB1 clock |
31 | "allwinner,sun4i-apb1-mux-clk" - for the APB1 clock muxing | |
4f985b4c MR |
32 | "allwinner,sun4i-apb1-gates-clk" - for the APB1 gates on A10 |
33 | "allwinner,sun5i-a13-apb1-gates-clk" - for the APB1 gates on A13 | |
2371dd88 | 34 | "allwinner,sun5i-a10s-apb1-gates-clk" - for the APB1 gates on A10s |
6a721db1 | 35 | "allwinner,sun6i-a31-apb1-gates-clk" - for the APB1 gates on A31 |
1fb2e4aa | 36 | "allwinner,sun7i-a20-apb1-gates-clk" - for the APB1 gates on A20 |
6a721db1 MR |
37 | "allwinner,sun6i-a31-apb2-div-clk" - for the APB2 gates on A31 |
38 | "allwinner,sun6i-a31-apb2-gates-clk" - for the APB2 gates on A31 | |
7551769a | 39 | "allwinner,sun4i-mod0-clk" - for the module 0 family of clocks |
6f863417 | 40 | "allwinner,sun7i-a20-out-clk" - for the external output clocks |
e4c6d6c1 | 41 | "allwinner,sun7i-a20-gmac-clk" - for the GMAC clock module on A20/A31 |
5abdbf2f RB |
42 | "allwinner,sun4i-a10-usb-clk" - for usb gates + resets on A10 / A20 |
43 | "allwinner,sun5i-a13-usb-clk" - for usb gates + resets on A13 | |
e874a669 EL |
44 | |
45 | Required properties for all clocks: | |
46 | - reg : shall be the control register address for the clock. | |
7551769a EL |
47 | - clocks : shall be the input parent clock(s) phandle for the clock. For |
48 | multiplexed clocks, the list order must match the hardware | |
49 | programming order. | |
13569a70 | 50 | - #clock-cells : from common clock binding; shall be set to 0 except for |
373d4e6b CYT |
51 | "allwinner,*-gates-clk", "allwinner,sun4i-pll5-clk" and |
52 | "allwinner,sun4i-pll6-clk" where it shall be set to 1 | |
53 | - clock-output-names : shall be the corresponding names of the outputs. | |
54 | If the clock module only has one output, the name shall be the | |
55 | module name. | |
e874a669 | 56 | |
5abdbf2f RB |
57 | And "allwinner,*-usb-clk" clocks also require: |
58 | - reset-cells : shall be set to 1 | |
59 | ||
e4c6d6c1 CYT |
60 | For "allwinner,sun7i-a20-gmac-clk", the parent clocks shall be fixed rate |
61 | dummy clocks at 25 MHz and 125 MHz, respectively. See example. | |
62 | ||
4f985b4c MR |
63 | Clock consumers should specify the desired clocks they use with a |
64 | "clocks" phandle cell. Consumers that are using a gated clock should | |
fc42ef51 MR |
65 | provide an additional ID in their clock property. This ID is the |
66 | offset of the bit controlling this particular gate in the register. | |
4f985b4c | 67 | |
e874a669 EL |
68 | For example: |
69 | ||
373d4e6b | 70 | osc24M: clk@01c20050 { |
e874a669 | 71 | #clock-cells = <0>; |
e3276998 | 72 | compatible = "allwinner,sun4i-osc-clk"; |
e874a669 EL |
73 | reg = <0x01c20050 0x4>; |
74 | clocks = <&osc24M_fixed>; | |
373d4e6b | 75 | clock-output-names = "osc24M"; |
e874a669 EL |
76 | }; |
77 | ||
373d4e6b | 78 | pll1: clk@01c20000 { |
e874a669 | 79 | #clock-cells = <0>; |
e3276998 | 80 | compatible = "allwinner,sun4i-pll1-clk"; |
e874a669 EL |
81 | reg = <0x01c20000 0x4>; |
82 | clocks = <&osc24M>; | |
373d4e6b CYT |
83 | clock-output-names = "pll1"; |
84 | }; | |
85 | ||
86 | pll5: clk@01c20020 { | |
87 | #clock-cells = <1>; | |
88 | compatible = "allwinner,sun4i-pll5-clk"; | |
89 | reg = <0x01c20020 0x4>; | |
90 | clocks = <&osc24M>; | |
91 | clock-output-names = "pll5_ddr", "pll5_other"; | |
e874a669 EL |
92 | }; |
93 | ||
94 | cpu: cpu@01c20054 { | |
95 | #clock-cells = <0>; | |
e3276998 | 96 | compatible = "allwinner,sun4i-cpu-clk"; |
e874a669 EL |
97 | reg = <0x01c20054 0x4>; |
98 | clocks = <&osc32k>, <&osc24M>, <&pll1>; | |
373d4e6b CYT |
99 | clock-output-names = "cpu"; |
100 | }; | |
101 | ||
102 | mmc0_clk: clk@01c20088 { | |
103 | #clock-cells = <0>; | |
104 | compatible = "allwinner,sun4i-mod0-clk"; | |
105 | reg = <0x01c20088 0x4>; | |
106 | clocks = <&osc24M>, <&pll6 1>, <&pll5 1>; | |
107 | clock-output-names = "mmc0"; | |
e874a669 | 108 | }; |
e4c6d6c1 CYT |
109 | |
110 | mii_phy_tx_clk: clk@2 { | |
111 | #clock-cells = <0>; | |
112 | compatible = "fixed-clock"; | |
113 | clock-frequency = <25000000>; | |
114 | clock-output-names = "mii_phy_tx"; | |
115 | }; | |
116 | ||
117 | gmac_int_tx_clk: clk@3 { | |
118 | #clock-cells = <0>; | |
119 | compatible = "fixed-clock"; | |
120 | clock-frequency = <125000000>; | |
121 | clock-output-names = "gmac_int_tx"; | |
122 | }; | |
123 | ||
124 | gmac_clk: clk@01c20164 { | |
125 | #clock-cells = <0>; | |
126 | compatible = "allwinner,sun7i-a20-gmac-clk"; | |
127 | reg = <0x01c20164 0x4>; | |
128 | /* | |
129 | * The first clock must be fixed at 25MHz; | |
130 | * the second clock must be fixed at 125MHz | |
131 | */ | |
132 | clocks = <&mii_phy_tx_clk>, <&gmac_int_tx_clk>; | |
133 | clock-output-names = "gmac"; | |
134 | }; |