linux-kernel - Re: [PATCH 1/2] dt-bindings: reset: mediatek: add MT7988 LVTS reset ID

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Message-ID: <ZZb0-pFWxuQlEm7q@pidgin.makrotopia.org>
Date: Thu, 4 Jan 2024 19:12:10 +0100
From: Daniel Golle <daniel@...rotopia.org>
To: Frank Wunderlich <linux@...web.de>
Cc: linux-mediatek@...ts.infradead.org,
	Frank Wunderlich <frank-w@...lic-files.de>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Sam Shih <sam.shih@...iatek.com>, linux-clk@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: reset: mediatek: add MT7988 LVTS reset
 ID

Hi Frank,

On Thu, Jan 04, 2024 at 06:39:29PM +0100, Frank Wunderlich wrote:
> From: Frank Wunderlich <frank-w@...lic-files.de>
> 
> ---
>  include/dt-bindings/reset/mediatek,mt7988-resets.h | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/include/dt-bindings/reset/mediatek,mt7988-resets.h b/include/dt-bindings/reset/mediatek,mt7988-resets.h
> index 493301971367..3f1e4ec07ad5 100644
> --- a/include/dt-bindings/reset/mediatek,mt7988-resets.h
> +++ b/include/dt-bindings/reset/mediatek,mt7988-resets.h
> @@ -10,4 +10,8 @@
>  /* ETHWARP resets */
>  #define MT7988_ETHWARP_RST_SWITCH		0
>  
> +/* INFRA resets */
> +#define MT7988_INFRA_RST0_THERM_CTRL_SWRST	9

I suppose this argument applies here as well:

"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."

https://lore.kernel.org/all/59629ec1-cc0c-4c5a-87cc-ea30d64ec191@linaro.org/

As a consequence, as what you are describing there are hardware bits
rather than IDs used by the driver, you can just use a numeric constant
in device tree instead of adding dt-bindings header.
Or change the driver so RST0_THERM_CTRL_SWRST could be defined as 0.