dt-bindings: arm: hisilicon: convert system controller bindings to json-schema
Convert the Hisilicon system controller and its variants binding to DT schema format using json-schema. All of them are grouped into one yaml file, to help users understand differences and avoid repeated descriptions. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/r/20200929141454.2312-11-thunder.leizhen@huawei.com Signed-off-by: Rob Herring <robh@kernel.org>
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Zhen Lei
Rob Herring
parent
42f2445fe8
commit
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Hisilicon Hi6220 system controller
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Required properties:
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- compatible : "hisilicon,hi6220-sysctrl"
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- reg : Register address and size
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- #clock-cells: should be set to 1, many clock registers are defined
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under this controller and this property must be present.
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Hisilicon designs this controller as one of the system controllers,
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its main functions are the same as Hisilicon system controller, but
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the register offset of some core modules are different.
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Example:
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/*for Hi6220*/
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sys_ctrl: sys_ctrl@f7030000 {
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compatible = "hisilicon,hi6220-sysctrl", "syscon";
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reg = <0x0 0xf7030000 0x0 0x2000>;
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#clock-cells = <1>;
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};
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Hisilicon HiP01 system controller
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Required properties:
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- compatible : "hisilicon,hip01-sysctrl"
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- reg : Register address and size
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The HiP01 system controller is mostly compatible with hisilicon
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system controller,but it has some specific control registers for
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HIP01 SoC family, such as slave core boot, and also some same
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registers located at different offset.
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Example:
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/* for hip01-ca9x2 */
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sysctrl: system-controller@10000000 {
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compatible = "hisilicon,hip01-sysctrl", "hisilicon,sysctrl";
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reg = <0x10000000 0x1000>;
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reboot-offset = <0x4>;
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};
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Hisilicon system controller
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Required properties:
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- compatible : "hisilicon,sysctrl"
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- reg : Register address and size
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Optional properties:
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- smp-offset : offset in sysctrl for notifying slave cpu booting
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cpu 1, reg;
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cpu 2, reg + 0x4;
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cpu 3, reg + 0x8;
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If reg value is not zero, cpun exit wfi and go
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- resume-offset : offset in sysctrl for notifying cpu0 when resume
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- reboot-offset : offset in sysctrl for system reboot
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Example:
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/* for Hi3620 */
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sysctrl: system-controller@fc802000 {
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compatible = "hisilicon,sysctrl";
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reg = <0xfc802000 0x1000>;
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smp-offset = <0x31c>;
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resume-offset = <0x308>;
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reboot-offset = <0x4>;
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};
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/arm/hisilicon/controller/sysctrl.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Hisilicon system controller
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maintainers:
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- Wei Xu <xuwei5@hisilicon.com>
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description: |
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The Hisilicon system controller is used on many Hisilicon boards, it can be
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used to assist the slave core startup, reboot the system, etc.
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There are some variants of the Hisilicon system controller, such as HiP01,
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Hi3519, Hi6220 system controller, each of them is mostly compatible with the
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Hisilicon system controller, but some same registers located at different
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offset. In addition, the HiP01 system controller has some specific control
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registers for HIP01 SoC family, such as slave core boot.
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The compatible names of each system controller are as follows:
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Hisilicon system controller --> hisilicon,sysctrl
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HiP01 system controller --> hisilicon,hip01-sysctrl
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Hi6220 system controller --> hisilicon,hi6220-sysctrl
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Hi3519 system controller --> hisilicon,hi3519-sysctrl
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allOf:
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- if:
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properties:
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compatible:
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contains:
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const: hisilicon,hi6220-sysctrl
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then:
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required:
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- '#clock-cells'
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properties:
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compatible:
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oneOf:
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- items:
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- enum:
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- hisilicon,sysctrl
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- hisilicon,hi6220-sysctrl
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- hisilicon,hi3519-sysctrl
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- const: syscon
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- items:
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- const: hisilicon,hip01-sysctrl
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- const: hisilicon,sysctrl
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reg:
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maxItems: 1
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smp-offset:
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description: |
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offset in sysctrl for notifying slave cpu booting
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cpu 1, reg;
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cpu 2, reg + 0x4;
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cpu 3, reg + 0x8;
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If reg value is not zero, cpun exit wfi and go
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$ref: /schemas/types.yaml#/definitions/uint32
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resume-offset:
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description: offset in sysctrl for notifying cpu0 when resume
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$ref: /schemas/types.yaml#/definitions/uint32
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reboot-offset:
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description: offset in sysctrl for system reboot
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$ref: /schemas/types.yaml#/definitions/uint32
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'#clock-cells':
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const: 1
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required:
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- compatible
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- reg
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additionalProperties: false
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examples:
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- |
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/* Hisilicon system controller */
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system-controller@fc802000 {
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compatible = "hisilicon,sysctrl", "syscon";
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reg = <0xfc802000 0x1000>;
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smp-offset = <0x31c>;
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resume-offset = <0x308>;
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reboot-offset = <0x4>;
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};
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/* HiP01 system controller */
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system-controller@10000000 {
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compatible = "hisilicon,hip01-sysctrl", "hisilicon,sysctrl";
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reg = <0x10000000 0x1000>;
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reboot-offset = <0x4>;
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};
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/* Hi6220 system controller */
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system-controller@f7030000 {
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compatible = "hisilicon,hi6220-sysctrl", "syscon";
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reg = <0xf7030000 0x2000>;
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#clock-cells = <1>;
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};
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/* Hi3519 system controller */
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system-controller@12010000 {
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compatible = "hisilicon,hi3519-sysctrl", "syscon";
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reg = <0x12010000 0x1000>;
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};
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...
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@ -1,14 +0,0 @@
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* Hisilicon Hi3519 System Controller Block
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This bindings use the following binding:
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Documentation/devicetree/bindings/mfd/syscon.yaml
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Required properties:
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- compatible: "hisilicon,hi3519-sysctrl".
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- reg: the register region of this block
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Examples:
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sysctrl: system-controller@12010000 {
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compatible = "hisilicon,hi3519-sysctrl", "syscon";
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reg = <0x12010000 0x1000>;
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};
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