| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame^] | 1 | # SPDX-License-Identifier: GPL-2.0-only |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/power/reset/syscon-reboot-mode.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Generic SYSCON reboot mode driver |
| 8 | |
| 9 | maintainers: |
| 10 | - Sebastian Reichel <sre@kernel.org> |
| 11 | |
| 12 | description: | |
| 13 | This driver gets reboot mode magic value from reboot-mode driver |
| 14 | and stores it in a SYSCON mapped register. Then the bootloader |
| 15 | can read it and take different action according to the magic |
| 16 | value stored. The SYSCON mapped register is retrieved from the |
| 17 | parental dt-node plus the offset. So the SYSCON reboot-mode node |
| 18 | should be represented as a sub-node of a "syscon", "simple-mfd" node. |
| 19 | |
| 20 | properties: |
| 21 | compatible: |
| 22 | const: syscon-reboot-mode |
| 23 | |
| 24 | mask: |
| 25 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 26 | description: Update only the register bits defined by the mask (32 bit) |
| 27 | |
| 28 | offset: |
| 29 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 30 | description: Offset in the register map for the mode register (in bytes) |
| 31 | |
| 32 | patternProperties: |
| 33 | "^mode-.+": |
| 34 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 35 | description: Vendor-specific mode value written to the mode register |
| 36 | |
| 37 | additionalProperties: false |
| 38 | |
| 39 | required: |
| 40 | - compatible |
| 41 | - offset |
| 42 | |
| 43 | examples: |
| 44 | - | |
| 45 | #include <dt-bindings/soc/rockchip,boot-mode.h> |
| 46 | |
| 47 | reboot-mode { |
| 48 | compatible = "syscon-reboot-mode"; |
| 49 | offset = <0x40>; |
| 50 | mode-normal = <BOOT_NORMAL>; |
| 51 | mode-recovery = <BOOT_RECOVERY>; |
| 52 | mode-bootloader = <BOOT_FASTBOOT>; |
| 53 | mode-loader = <BOOT_BL_DOWNLOAD>; |
| 54 | }; |
| 55 | ... |