| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame^] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/mfd/canaan,k210-sysctl.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Canaan Kendryte K210 System Controller |
| 8 | |
| 9 | maintainers: |
| 10 | - Damien Le Moal <dlemoal@kernel.org> |
| 11 | |
| 12 | description: |
| 13 | Canaan Inc. Kendryte K210 SoC system controller which provides a |
| 14 | register map for controlling the clocks, reset signals and pin power |
| 15 | domains of the SoC. |
| 16 | |
| 17 | properties: |
| 18 | compatible: |
| 19 | items: |
| 20 | - const: canaan,k210-sysctl |
| 21 | - const: syscon |
| 22 | - const: simple-mfd |
| 23 | |
| 24 | clocks: |
| 25 | maxItems: 1 |
| 26 | description: |
| 27 | System controller Advanced Power Bus (APB) interface clock source. |
| 28 | |
| 29 | clock-names: |
| 30 | items: |
| 31 | - const: pclk |
| 32 | |
| 33 | reg: |
| 34 | maxItems: 1 |
| 35 | |
| 36 | clock-controller: |
| 37 | # Child node |
| 38 | type: object |
| 39 | $ref: ../clock/canaan,k210-clk.yaml |
| 40 | description: |
| 41 | Clock controller for the SoC clocks. This child node definition |
| 42 | should follow the bindings specified in |
| 43 | Documentation/devicetree/bindings/clock/canaan,k210-clk.yaml. |
| 44 | |
| 45 | reset-controller: |
| 46 | # Child node |
| 47 | type: object |
| 48 | $ref: ../reset/canaan,k210-rst.yaml |
| 49 | description: |
| 50 | Reset controller for the SoC. This child node definition |
| 51 | should follow the bindings specified in |
| 52 | Documentation/devicetree/bindings/reset/canaan,k210-rst.yaml. |
| 53 | |
| 54 | syscon-reboot: |
| 55 | # Child node |
| 56 | type: object |
| 57 | $ref: ../power/reset/syscon-reboot.yaml |
| 58 | description: |
| 59 | Reboot method for the SoC. This child node definition |
| 60 | should follow the bindings specified in |
| 61 | Documentation/devicetree/bindings/power/reset/syscon-reboot.yaml. |
| 62 | |
| 63 | required: |
| 64 | - compatible |
| 65 | - clocks |
| 66 | - reg |
| 67 | - clock-controller |
| 68 | |
| 69 | additionalProperties: false |
| 70 | |
| 71 | examples: |
| 72 | - | |
| 73 | #include <dt-bindings/clock/k210-clk.h> |
| 74 | #include <dt-bindings/reset/k210-rst.h> |
| 75 | |
| 76 | clocks { |
| 77 | in0: oscllator { |
| 78 | compatible = "fixed-clock"; |
| 79 | #clock-cells = <0>; |
| 80 | clock-frequency = <26000000>; |
| 81 | }; |
| 82 | }; |
| 83 | |
| 84 | sysctl: syscon@50440000 { |
| 85 | compatible = "canaan,k210-sysctl", |
| 86 | "syscon", "simple-mfd"; |
| 87 | reg = <0x50440000 0x100>; |
| 88 | clocks = <&sysclk K210_CLK_APB1>; |
| 89 | clock-names = "pclk"; |
| 90 | |
| 91 | sysclk: clock-controller { |
| 92 | #clock-cells = <1>; |
| 93 | compatible = "canaan,k210-clk"; |
| 94 | clocks = <&in0>; |
| 95 | }; |
| 96 | |
| 97 | sysrst: reset-controller { |
| 98 | compatible = "canaan,k210-rst"; |
| 99 | #reset-cells = <1>; |
| 100 | }; |
| 101 | |
| 102 | reboot: syscon-reboot { |
| 103 | compatible = "syscon-reboot"; |
| 104 | regmap = <&sysctl>; |
| 105 | offset = <48>; |
| 106 | mask = <1>; |
| 107 | value = <1>; |
| 108 | }; |
| 109 | }; |