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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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8c4102f20a
The reboot and poweroff features are actually part of the Power Management Unit system controller, thus allow them as its children, instead of specifying as separate device nodes with syscon phandle. Without it, the reboot/poweroff feature becomes unavailable. Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
84 lines
2.1 KiB
YAML
84 lines
2.1 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/soc/loongson/loongson,ls2k-pmc.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Loongson-2 Power Manager controller
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maintainers:
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- Yinbo Zhu <zhuyinbo@loongson.cn>
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properties:
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compatible:
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oneOf:
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- items:
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- const: loongson,ls2k0500-pmc
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- const: syscon
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- items:
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- enum:
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- loongson,ls2k1000-pmc
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- loongson,ls2k2000-pmc
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- const: loongson,ls2k0500-pmc
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- const: syscon
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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loongson,suspend-address:
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$ref: /schemas/types.yaml#/definitions/uint64
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description:
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The "loongson,suspend-address" is a deep sleep state (Suspend To
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RAM) firmware entry address which was jumped from kernel and it's
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value was dependent on specific platform firmware code. In
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addition, the PM need according to it to indicate that current
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SoC whether support Suspend To RAM.
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syscon-poweroff:
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$ref: /schemas/power/reset/syscon-poweroff.yaml#
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type: object
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description:
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Node for power off method
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syscon-reboot:
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$ref: /schemas/power/reset/syscon-reboot.yaml#
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type: object
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description:
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Node for reboot method
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required:
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- compatible
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- reg
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- interrupts
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.h>
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power-management@1fe27000 {
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compatible = "loongson,ls2k1000-pmc", "loongson,ls2k0500-pmc", "syscon";
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reg = <0x1fe27000 0x58>;
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interrupt-parent = <&liointc1>;
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interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
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loongson,suspend-address = <0x0 0x1c000500>;
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syscon-reboot {
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compatible = "syscon-reboot";
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offset = <0x30>;
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mask = <0x1>;
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};
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syscon-poweroff {
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compatible = "syscon-poweroff";
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regmap = <&pmc>;
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offset = <0x14>;
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mask = <0x3c00>;
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value = <0x3c00>;
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};
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};
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