From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 805663909A5; Wed, 23 Sep 2026 08:34:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790152490; cv=none; b=Ls9R4vtdK2LVln94WKdMY0FYAybXx0lwBjm3RsnIAJ155u240FXnG3V7wb6uSDnHmnlRdJ4FTLiVOYfHBNho/d44+p/HG/tmoqS8ti4y3KPIie/28yysjt77OR7/aqmWt9O9UPMxEUGsw5epZ+iyF9ELYihZAiSqDtflhppMGCM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790152490; c=relaxed/simple; bh=elUNYHZrnT4OVCDssSy6vQXfnSqu7eReLuKE4AWHIuM=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=CPtalvV11ktJ1iVgXSysFCSQLziKt07a6gAsVs6jn+rgMfC7Yu9sUDYFyZ283YxE1gXGkbA9UmQM+55sUzxgiztZQeOnPyoC32nIWjHBjnN2oOIbdNetBHsjC38ZDVUTdF2+wgh+i9Rjc0mChdUFFlIW/QnOz0IBJcVixBFG4Qw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=aJ/OovWT; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="aJ/OovWT" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E20281F000FF; Wed, 23 Sep 2026 08:34:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1790152481; bh=fONU01jydHR4DKzstpQamxQnf6IvXt+cW08C/ElpZ0c=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=aJ/OovWTX+MAupdejZ0JhdViOFsf6gaDxoq7MmZ2wjypNfIDLbqxlT8aLlxRcEkRj sr/heJ+KLZgJe49f52h6P6Z9yQnZlrZAgbJ9iQrZKPoUW7nzojHLcDtPmL3G8yYMBJ OoUuCIyx0EpqwitZokHysqgahB75slQifGcz6Rgeh4w07pJ/UI1Nr+bfSEx7FerVzq 8+W1Mdpg9eT73brThAmQng0Tk34uPlansAoT0/IzqnLBMmvOHxFHW+z62bw1/S4OR3 9PpMUQcya2WtdhZO9Sq+lCRatNPWQIFULSLwFXis+VLcCq5DRfb9no455z56Ll2zTR c2Myo6SUouxhQ== Message-ID: Date: Wed, 23 Sep 2026 10:34:34 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1 3/5] dt-bindings: dma: Add CIX Sky1 DMA-350 integration To: Conor Dooley , Jelly Jia Cc: vkoul@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, devicetree@vger.kernel.org, Frank.Li@kernel.org, robin.murphy@arm.com, cix-kernel-upstream@cixtech.com, dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20260920051501.3620794-1-Jelly.Jia@cixtech.com> <20260922-perky-absently-2590fe901176@spud> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 22/09/2026 19:04, Conor Dooley wrote: > On Sun, Sep 20, 2026 at 01:15:01PM +0800, Jelly Jia wrote: >> Hi Conor, >> >> Thanks, understood: with the SoC-specific compatible scoping the >> integration code, other platforms are unaffected either way. >> >> For v2 my preference is to keep the wrapper, since it leaves the >> generic arm-dma350 driver and its binding untouched. Does that work >> for you, or would you rather see the dma-350 node itself carry a >> device-specific compatible, with the clocks, resets and >> memory-region described on it? I'd also like Robin's take on the >> arm-dma350 side before restructuring that far. > > The latter, since that's what we do for almost every other device under > the sun. Robin's take would probably be worth hearing, but you removed > all the context while replying which makes that more difficult... Following DWC USB example, I think wrappers are discouraged. The integration of a block is together with that block an entire device. Integration is not something separate, at least usually. If it is, author should provide some arguments in terms of hardware. The arguments of driver are unconvincing. And to prove this is same device (integration = block), the MMIO is the same. Best regards, Krzysztof