| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/reset/hisilicon,hi3660-reset.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Hisilicon System Reset Controller |
| |
| maintainers: |
| - Wei Xu <xuwei5@hisilicon.com> |
| |
| description: | |
| Please also refer to reset.txt in this directory for common reset |
| controller binding usage. |
| The reset controller registers are part of the system-ctl block on |
| hi3660 and hi3670 SoCs. |
| |
| properties: |
| compatible: |
| oneOf: |
| - items: |
| - const: hisilicon,hi3660-reset |
| - items: |
| - const: hisilicon,hi3670-reset |
| - const: hisilicon,hi3660-reset |
| |
| hisilicon,rst-syscon: |
| description: phandle of the reset's syscon. |
| $ref: /schemas/types.yaml#/definitions/phandle |
| |
| '#reset-cells': |
| description: | |
| Specifies the number of cells needed to encode a reset source. |
| Cell #1 : offset of the reset assert control register from the syscon |
| register base |
| offset + 4: deassert control register |
| offset + 8: status control register |
| Cell #2 : bit position of the reset in the reset control register |
| const: 2 |
| |
| required: |
| - compatible |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| #include <dt-bindings/interrupt-controller/irq.h> |
| #include <dt-bindings/interrupt-controller/arm-gic.h> |
| #include <dt-bindings/clock/hi3660-clock.h> |
| |
| iomcu: iomcu@ffd7e000 { |
| compatible = "hisilicon,hi3660-iomcu", "syscon"; |
| reg = <0xffd7e000 0x1000>; |
| }; |
| |
| iomcu_rst: iomcu_rst_controller { |
| compatible = "hisilicon,hi3660-reset"; |
| hisilicon,rst-syscon = <&iomcu>; |
| #reset-cells = <2>; |
| }; |
| |
| /* Specifying reset lines connected to IP modules */ |
| i2c@ffd71000 { |
| compatible = "snps,designware-i2c"; |
| reg = <0xffd71000 0x1000>; |
| interrupts = <GIC_SPI 118 IRQ_TYPE_LEVEL_HIGH>; |
| #address-cells = <1>; |
| #size-cells = <0>; |
| clock-frequency = <400000>; |
| clocks = <&crg_ctrl HI3660_CLK_GATE_I2C0>; |
| resets = <&iomcu_rst 0x20 3>; |
| pinctrl-names = "default"; |
| pinctrl-0 = <&i2c0_pmx_func &i2c0_cfg_func>; |
| }; |
| ... |
