linux-kernel - Re: [PATCH 1/2] dt-bindings: watchdog: mediatek,mtk-wdt: add MT7988 watchdog and toprgu

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Date:   Fri, 10 Nov 2023 09:09:09 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Daniel Golle <daniel@...rotopia.org>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH 1/2] dt-bindings: watchdog: mediatek,mtk-wdt: add MT7988
 watchdog and toprgu

On 10/11/2023 01:30, Daniel Golle wrote:
> Add binding description for mediatek,mt7988-wdt.
> 
> Signed-off-by: Daniel Golle <daniel@...rotopia.org>
> ---

...

> diff --git a/include/dt-bindings/reset/mediatek,mt7988-resets.h b/include/dt-bindings/reset/mediatek,mt7988-resets.h
> new file mode 100644
> index 0000000000000..fa7c937505e08
> --- /dev/null
> +++ b/include/dt-bindings/reset/mediatek,mt7988-resets.h
> @@ -0,0 +1,12 @@
> +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
> +
> +/* TOPRGU resets */
> +#define MT7988_TOPRGU_SGMII0_GRST		1
> +#define MT7988_TOPRGU_SGMII1_GRST		2
> +#define MT7988_TOPRGU_XFI0_GRST			12
> +#define MT7988_TOPRGU_XFI1_GRST			13
> +#define MT7988_TOPRGU_XFI_PEXTP0_GRST		14
> +#define MT7988_TOPRGU_XFI_PEXTP1_GRST		15
> +#define MT7988_TOPRGU_XFI_PLL_GRST		16

IDs should start from 0 or 1 and increment by 1. If these are not IDs,
then you do not need them in the bindings.

Where is the driver change using these IDs?

> +
> +#define MT7988_TOPRGU_SW_RST_NUM		24

Why 24? I see 7. Why having it in the bindings in the first place.

It's quite likely I asked the same question about other bindings for
Mediatek. I will be asking every time till this is fixed.

Best regards,
Krzysztof