Commit 4d1363a4 authored by AngeloGioacchino Del Regno's avatar AngeloGioacchino Del Regno Committed by Wim Van Sebroeck
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dt-bindings: watchdog: mediatek: Convert mtk-wdt to json-schema 



Convert the MediaTek watchdog bindings to schema.

The original binding only had 4 without a fallback but there is a reset
controller on the "mediatek,mt7986-wdt", "mediatek,mt8186-wdt",
"mediatek,mt8188-wdt" and "mediatek,mt8195-wdt" Since there is no reset
controller for the mt6589, we remove "mediatek,mt6589-wdt" as a
fallback.

Signed-off-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Co-developed-by: default avatarAllen-KH Cheng <allen-kh.cheng@mediatek.com>
Signed-off-by: default avatarAllen-KH Cheng <allen-kh.cheng@mediatek.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Reviewed-by: default avatarNícolas F. R. A. Prado <nfraprado@collabora.com>
Link: https://lore.kernel.org/r/20221101090116.27130-6-allen-kh.cheng@mediatek.com


Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarWim Van Sebroeck <wim@linux-watchdog.org>
parent bc731365

Documentation/devicetree/bindings/watchdog/mediatek,mtk-wdt.yaml

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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/watchdog/mediatek,mtk-wdt.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: MediaTek SoCs Watchdog timer



maintainers:

  - Matthias Brugger <matthias.bgg@gmail.com>



description:

  The watchdog supports a pre-timeout interrupt that fires

  timeout-sec/2 before the expiry.



allOf:

  - $ref: watchdog.yaml#



properties:

  compatible:

    oneOf:

      - enum:

          - mediatek,mt2712-wdt

          - mediatek,mt6589-wdt

          - mediatek,mt7986-wdt

          - mediatek,mt8183-wdt

          - mediatek,mt8186-wdt

          - mediatek,mt8188-wdt

          - mediatek,mt8192-wdt

          - mediatek,mt8195-wdt

      - items:

          - enum:

              - mediatek,mt2701-wdt

              - mediatek,mt6582-wdt

              - mediatek,mt6797-wdt

              - mediatek,mt7622-wdt

              - mediatek,mt7623-wdt

              - mediatek,mt7629-wdt

              - mediatek,mt8516-wdt

          - const: mediatek,mt6589-wdt



  reg:

    maxItems: 1



  interrupts:

    items:

      - description: Watchdog pre-timeout (bark) interrupt



  mediatek,disable-extrst:

    description: Disable sending output reset signal

    type: boolean



  '#reset-cells':

    const: 1



required:

  - compatible

  - reg



unevaluatedProperties: false



examples:

  - |

    #include <dt-bindings/interrupt-controller/arm-gic.h>



    soc {

        #address-cells = <2>;

        #size-cells = <2>;



        watchdog: watchdog@10007000 {

            compatible = "mediatek,mt8183-wdt";

            reg = <0 0x10007000 0 0x100>;

            interrupts = <GIC_SPI 139 IRQ_TYPE_LEVEL_LOW>;

            mediatek,disable-extrst;

            timeout-sec = <10>;

            #reset-cells = <1>;

        };

    };

Documentation/devicetree/bindings/watchdog/mtk-wdt.txt

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Mediatek SoCs Watchdog timer



The watchdog supports a pre-timeout interrupt that fires timeout-sec/2

before the expiry.



Required properties:



- compatible should contain:

	"mediatek,mt2701-wdt", "mediatek,mt6589-wdt": for MT2701

	"mediatek,mt2712-wdt": for MT2712

	"mediatek,mt6582-wdt", "mediatek,mt6589-wdt": for MT6582

	"mediatek,mt6589-wdt": for MT6589

	"mediatek,mt6797-wdt", "mediatek,mt6589-wdt": for MT6797

	"mediatek,mt7622-wdt", "mediatek,mt6589-wdt": for MT7622

	"mediatek,mt7623-wdt", "mediatek,mt6589-wdt": for MT7623

	"mediatek,mt7629-wdt", "mediatek,mt6589-wdt": for MT7629

	"mediatek,mt7986-wdt", "mediatek,mt6589-wdt": for MT7986

	"mediatek,mt8183-wdt": for MT8183

	"mediatek,mt8186-wdt", "mediatek,mt6589-wdt": for MT8186

	"mediatek,mt8188-wdt", "mediatek,mt6589-wdt": for MT8188

	"mediatek,mt8516-wdt", "mediatek,mt6589-wdt": for MT8516

	"mediatek,mt8192-wdt": for MT8192

	"mediatek,mt8195-wdt", "mediatek,mt6589-wdt": for MT8195



- reg : Specifies base physical address and size of the registers.



Optional properties:

- mediatek,disable-extrst: disable send output reset signal

- interrupts: Watchdog pre-timeout (bark) interrupt.

- timeout-sec: contains the watchdog timeout in seconds.

- #reset-cells: Should be 1.



Example:



watchdog: watchdog@10007000 {

	compatible = "mediatek,mt8183-wdt",

		     "mediatek,mt6589-wdt";

	mediatek,disable-extrst;

	reg = <0 0x10007000 0 0x100>;

	interrupts = <GIC_SPI 139 IRQ_TYPE_NONE>;

	timeout-sec = <10>;

	#reset-cells = <1>;

};