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| 1 | +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | +%YAML 1.2 |
| 3 | +--- |
| 4 | +$id: http://devicetree.org/schemas/clock/nuvoton,npcm750-clk.yaml# |
| 5 | +$schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | + |
| 7 | +title: Nuvoton NPCM7XX Clock Controller |
| 8 | + |
| 9 | +maintainers: |
| 10 | + |
| 11 | + |
| 12 | +description: > |
| 13 | + Nuvoton Poleg BMC NPCM7XX contains an integrated clock controller, which |
| 14 | + generates and supplies clocks to all modules within the BMC. |
| 15 | +
|
| 16 | + External clocks: |
| 17 | +
|
| 18 | + There are six fixed clocks that are generated outside the BMC. All clocks are of |
| 19 | + a known fixed value that cannot be changed. clk_refclk, clk_mcbypck and |
| 20 | + clk_sysbypck are inputs to the clock controller. |
| 21 | + clk_rg1refck, clk_rg2refck and clk_xin are external clocks suppling the |
| 22 | + network. They are set on the device tree, but not used by the clock module. The |
| 23 | + network devices use them directly. |
| 24 | +
|
| 25 | + All available clocks are defined as preprocessor macros in: |
| 26 | + dt-bindings/clock/nuvoton,npcm7xx-clock.h |
| 27 | + and can be reused as DT sources. |
| 28 | +
|
| 29 | +properties: |
| 30 | + compatible: |
| 31 | + const: nuvoton,npcm750-clk |
| 32 | + |
| 33 | + reg: |
| 34 | + maxItems: 1 |
| 35 | + |
| 36 | + '#clock-cells': |
| 37 | + const: 1 |
| 38 | + |
| 39 | + clock-names: |
| 40 | + items: |
| 41 | + - const: refclk |
| 42 | + - const: sysbypck |
| 43 | + - const: mcbypck |
| 44 | + |
| 45 | + clocks: |
| 46 | + items: |
| 47 | + - description: refclk |
| 48 | + - description: sysbypck |
| 49 | + - description: mcbypck |
| 50 | + |
| 51 | +required: |
| 52 | + - compatible |
| 53 | + - reg |
| 54 | + - '#clock-cells' |
| 55 | + |
| 56 | +additionalProperties: false |
| 57 | + |
| 58 | +examples: |
| 59 | + - | |
| 60 | + clock-controller@f0801000 { |
| 61 | + compatible = "nuvoton,npcm750-clk"; |
| 62 | + #clock-cells = <1>; |
| 63 | + reg = <0xf0801000 0x1000>; |
| 64 | + clock-names = "refclk", "sysbypck", "mcbypck"; |
| 65 | + clocks = <&clk_refclk>, <&clk_sysbypck>, <&clk_mcbypck>; |
| 66 | + }; |
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