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Message-ID: <e2e4ead0-d8eb-1302-93e9-f330807d811e@linaro.org>
Date: Fri, 22 Apr 2022 17:44:21 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Allen-KH Cheng <allen-kh.cheng@...iatek.com>,
Wim Van Sebroeck <wim@...ux-watchdog.org>,
Guenter Roeck <linux@...ck-us.net>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Matthias Brugger <matthias.bgg@...il.com>,
Rob Herring <robh+dt@...nel.org>, nfraprado@...labora.com
Cc: Project_Global_Chrome_Upstream_Group@...iatek.com,
devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org,
srv_heupstream@...iatek.com, Chen-Yu Tsai <wenst@...omium.org>,
Ryder Lee <ryder.lee@...nel.org>
Subject: Re: [PATCH 2/2] dt-bindings: watchdog: mediatek: Convert binding to
YAML
On 22/04/2022 14:10, Allen-KH Cheng wrote:
> Convert Mediatek watchdog devicetree binding to YAML.
>
> Signed-off-by: Allen-KH Cheng <allen-kh.cheng@...iatek.com>
> ---
> .../devicetree/bindings/watchdog/mtk-wdt.txt | 42 ----------
> .../devicetree/bindings/watchdog/mtk-wdt.yaml | 76 +++++++++++++++++++
> 2 files changed, 76 insertions(+), 42 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/watchdog/mtk-wdt.txt
> create mode 100644 Documentation/devicetree/bindings/watchdog/mtk-wdt.yaml
>
> diff --git a/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt b/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt
> deleted file mode 100644
> index 762c62e428ef..000000000000
> --- a/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt
> +++ /dev/null
> @@ -1,42 +0,0 @@
> -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,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@...07000 {
> - 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>;
> -};
> diff --git a/Documentation/devicetree/bindings/watchdog/mtk-wdt.yaml b/Documentation/devicetree/bindings/watchdog/mtk-wdt.yaml
> new file mode 100644
> index 000000000000..5788617027c8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/watchdog/mtk-wdt.yaml
> @@ -0,0 +1,76 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/watchdog/mtk-wdt.yaml#
File name: mtk,wdt.yaml
I assume all future MediaTek watchdogs (even these unpublished and
developed in some years) will fit into this schema. :) If not, then
maybe better to name the file by the compatible... but it's not a must.
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Mediatek SoCs Watchdog timer
> +
> +maintainers:
> + - Runyang Chen <runyang.chen@...iatek.com>
> + - Allen-KH Cheng <allen-kh.cheng@...iatek.com>
> +
> +description: |+
> + The watchdog supports a pre-timeout interrupt that fires timeout-sec/2
> + before the expiry.
> +
> +allOf:
> + - $ref: "watchdog.yaml#"
> +
> +properties:
> + compatible:
> + oneOf:
> + - const: mediatek,mt2712-wdt
> + - const: mediatek,mt6589-wdt
> + - const: mediatek,mt8183-wdt
> + - const: mediatek,mt8192-wdt
All these four entries should be an enum.
> +
> + - items:
> + - enum:
> + - mediatek,mt2701-wdt
> + - mediatek,mt6582-wdt
> + - mediatek,mt6797-wdt
> + - mediatek,mt7622-wdt
> + - mediatek,mt7623-wdt
> + - mediatek,mt7629-wdt
> + - mediatek,mt7986-wdt
> + - mediatek,mt8173-wdt
> + - mediatek,mt8183-wdt
> + - mediatek,mt8186-wdt
> + - mediatek,mt8192-wdt
> + - mediatek,mt8195-wdt
> + - mediatek,mt8516-wdt
> + - const: mediatek,mt6589-wdt
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + '#reset-cells':
> + const: 1
> +
> + timeout-sec: true
You do not need this, it's coming from watchdog schema.
> +
> +required:
> + - compatible
> + - reg
> +
> +unevaluatedProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> + watchdog@...07000 {
> + compatible = "mediatek,mt8183-wdt",
> + "mediatek,mt6589-wdt";
> + mediatek,disable-extrst;
Did you test your bindings? Does not look like. Please run
dt_binding_check (see writing-schema for instructions).
> + reg = <0x10007000 0x100>;
> + interrupts = <GIC_SPI 139 IRQ_TYPE_NONE>;
Wrong interrupt flag.
> + timeout-sec = <10>;
> + #reset-cells = <1>;
> + };
> +
> +...
Best regards,
Krzysztof
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