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Date: Fri, 22 Apr 2022 15:17:52 +0200
From: Matthias Brugger <matthias.bgg@...il.com>
To: Allen-KH Cheng <allen-kh.cheng@...iatek.com>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Thomas Gleixner <tglx@...utronix.de>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski@...onical.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,
Chen-Yu Tsai <wenst@...omium.org>,
Ryder Lee <ryder.lee@...nel.org>
Subject: Re: [PATCH 1/1] dt-bindings: timer: mediatek: Convert binding to YAML
On 22/04/2022 15:13, Allen-KH Cheng wrote:
> Convert Mediatek timer devicetree binding to YAML.
>
> Signed-off-by: Allen-KH Cheng <allen-kh.cheng@...iatek.com>
> ---
> .../bindings/timer/mediatek,mtk-timer.txt | 42 ----------
> .../bindings/timer/mediatek,mtk-timer.yaml | 79 +++++++++++++++++++
> 2 files changed, 79 insertions(+), 42 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt
> create mode 100644 Documentation/devicetree/bindings/timer/mediatek,mtk-timer.yaml
>
> diff --git a/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt b/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt
> deleted file mode 100644
> index 6f1f9dba6e88..000000000000
> --- a/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt
> +++ /dev/null
> @@ -1,42 +0,0 @@
> -MediaTek Timers
> ----------------
> -
> -MediaTek SoCs have two different timers on different platforms,
> -- GPT (General Purpose Timer)
> -- SYST (System Timer)
> -
> -The proper timer will be selected automatically by driver.
> -
> -Required properties:
> -- compatible should contain:
> - For those SoCs that use GPT
> - * "mediatek,mt2701-timer" for MT2701 compatible timers (GPT)
> - * "mediatek,mt6580-timer" for MT6580 compatible timers (GPT)
> - * "mediatek,mt6582-timer" for MT6582 compatible timers (GPT)
> - * "mediatek,mt6589-timer" for MT6589 compatible timers (GPT)
> - * "mediatek,mt7623-timer" for MT7623 compatible timers (GPT)
> - * "mediatek,mt8127-timer" for MT8127 compatible timers (GPT)
> - * "mediatek,mt8135-timer" for MT8135 compatible timers (GPT)
> - * "mediatek,mt8173-timer" for MT8173 compatible timers (GPT)
> - * "mediatek,mt8516-timer" for MT8516 compatible timers (GPT)
> - * "mediatek,mt6577-timer" for MT6577 and all above compatible timers (GPT)
> -
> - For those SoCs that use SYST
> - * "mediatek,mt8183-timer" for MT8183 compatible timers (SYST)
> - * "mediatek,mt8186-timer" for MT8186 compatible timers (SYST)
> - * "mediatek,mt8192-timer" for MT8192 compatible timers (SYST)
> - * "mediatek,mt8195-timer" for MT8195 compatible timers (SYST)
> - * "mediatek,mt7629-timer" for MT7629 compatible timers (SYST)
> - * "mediatek,mt6765-timer" for MT6765 and all above compatible timers (SYST)
> -
> -- reg: Should contain location and length for timer register.
> -- clocks: Should contain system clock.
> -
> -Examples:
> -
> - timer@...08000 {
> - compatible = "mediatek,mt6577-timer";
> - reg = <0x10008000 0x80>;
> - interrupts = <GIC_SPI 113 IRQ_TYPE_LEVEL_LOW>;
> - clocks = <&system_clk>;
> - };
> diff --git a/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.yaml b/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.yaml
> new file mode 100644
> index 000000000000..be7eb09275f9
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.yaml
> @@ -0,0 +1,79 @@
> +# SPDX-License-Identifier: GPL-2.0-or-later OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/timer/mediatek,mtk-timer.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MediaTek SoCs timers bindings
> +
> +description:
> + MediaTek SoCs have two different timers on different platforms,
> + - GPT (General Purpose Timer)
> + - SYST (System Timer)
> +
> +maintainers:
> + - Fengquan Chen <fengquan.chen@...iatek.com>
> + - Allen-KH Cheng <allen-kh.cheng@...iatek.com>
> +
> +properties:
> + $nodename:
> + pattern: '^timer@[a-f0-9]+$'
> +
> + compatible:
> + oneOf:
> + - const: mediatek,mt6577-timer
> + - const: mediatek,mt6765-timer
> + - items:
> + - enum:
> + - mediatek,mt2701-timer
> + - mediatek,mt6580-timer
> + - mediatek,mt6582-timer
> + - mediatek,mt6589-timer
> + - mediatek,mt7623-timer
> + - mediatek,mt8127-timer
> + - mediatek,mt8135-timer
> + - mediatek,mt8173-timer
> + - mediatek,mt8516-timer
> + - const: mediatek,mt6577-timer
> + - items:
> + - enum:
> + - mediatek,mt7629-timer
> + - mediatek,mt8183-timer
> + - mediatek,mt8186-timer
> + - mediatek,mt8192-timer
> + - mediatek,mt8195-timer
> + - const: mediatek,mt6765-timer
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + clocks:
> + minItems: 1
> + maxItems: 2
> +
> + clock-names:
> + minItems: 1
> + items:
> + - const: clk13m
> + - const: bus
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
Are we missing clocks here?
Regards,
Matthias
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + timer@...08000 {
> + compatible = "mediatek,mt6577-timer";
> + reg = <0xd4014000 0x100>;
> + interrupts = <13>;
> + clocks = <&coreclk 2>;
> + };
> +
> +...
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