linux-kernel - Re: Aw: Re: [PATCH v3 1/2] dt-bindings: reset: mediatek: add MT7988 reset IDs

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Date: Thu, 01 Feb 2024 12:40:17 +0100
From: Frank Wunderlich <frank-w@...lic-files.de>
To: Conor Dooley <conor@...nel.org>,
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
CC: Frank Wunderlich <linux@...web.de>,
 Michael Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>,
 Matthias Brugger <matthias.bgg@...il.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>,
 Daniel Golle <daniel@...rotopia.org>, linux-clk@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 devicetree@...r.kernel.org, linux-mediatek@...ts.infradead.org
Subject: Re: Aw: Re: [PATCH v3 1/2] dt-bindings: reset: mediatek: add MT7988 reset IDs

Am 19. Januar 2024 18:04:36 MEZ schrieb Conor Dooley <conor@...nel.org>:
>On Fri, Jan 19, 2024 at 10:28:30AM +0100, AngeloGioacchino Del Regno wrote:
>>
>> The resets are organized on a per-reset-controller basis, so, the ETHWARP
>> reset controller's first reset is RST_SWITCH, the second one is RST_something_else,
>> etc. while the first reset of the INFRA reset controller is PEXTP_MAC_SWRST.
>> 
>> That's why ETHWARP has a reset index 0 and INFRA also starts at 0.
>> I think that the numbering is good as it is, and having one driver start at index 5
>> while the other starts at index 12 would only overcomplicate registering the resets
>> in each driver, or waste bytes by making unnecessarily large arrays, for (imo) no
>> good reason.
>> 
>> This is one header, but it should "in theory" be more than one... so we would have
>> one for each hardware block - but that'd make the reset directory over-crowded, as
>> other MediaTek SoCs have got even more resets in even more hardware blocks than the
>> MT7988. That'd be something like ~4 reset headers per SoC (and will increase with
>> newer ones)...
>> ...and this is why we have one binding header for resets.
>
>That's okay. The commit message leaves me, who clearly isn't a mediatek
>guy, with no information as to why these are not one contiguous set.
>IMO being for different reset controllers entirely is fine.
>
>> On the topic of leaving space to allow grouping RST0/RST1: -> No. <-
>> The indices have to start from zero and have to be sequential, with no holes.
>
>Agreed.

Hi,

Just a friendly reminder.

As far as i understood, Patches are fine so far and do not need any rework,right?

But i have not seen them picked up yet in linux-next.
regards Frank