| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame] | 1 | Generic SYSCON mapped register reset driver |
| 2 | |
| 3 | This is a generic reset driver using syscon to map the reset register. |
| 4 | The reset is generally performed with a write to the reset register |
| 5 | defined by the register map pointed by syscon reference plus the offset |
| 6 | with the value and mask defined in the reboot node. |
| 7 | |
| 8 | Required properties: |
| 9 | - compatible: should contain "syscon-reboot" |
| 10 | - regmap: this is phandle to the register map node |
| 11 | - offset: offset in the register map for the reboot register (in bytes) |
| 12 | - value: the reset value written to the reboot register (32 bit access) |
| 13 | |
| 14 | Optional properties: |
| 15 | - mask: update only the register bits defined by the mask (32 bit) |
| 16 | |
| 17 | Legacy usage: |
| 18 | If a node doesn't contain a value property but contains a mask property, the |
| 19 | mask property is used as the value. |
| 20 | |
| 21 | Default will be little endian mode, 32 bit access only. |
| 22 | |
| 23 | Examples: |
| 24 | |
| 25 | reboot { |
| 26 | compatible = "syscon-reboot"; |
| 27 | regmap = <®mapnode>; |
| 28 | offset = <0x0>; |
| 29 | mask = <0x1>; |
| 30 | }; |