From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 C08D6244665; Wed, 18 Feb 2026 07:49:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771400992; cv=none; b=KXaPNabAVVvpAcQcUo1U5vWc/vtK4ow0HpKHrrI9gDHy5p4Ad8MgbnTaO9Qcd9nMp9+b9ePT6OaQajoNOvh7S53GY0VjYf5jusYkjxsZ+F3jg3vhWaSWfKnOCD27FpGtcpogR2/m3YnvEtmY6cGaUTZUcxNcSoFYNip9n5Ll0+o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771400992; c=relaxed/simple; bh=cyY2K4B0Tpvc3/PV6vs7XKg00+TvRGtS46n9Pd1uc9k=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=r7YQ9ekwCgcml/hOXPiyzG5wioz+/wvOPIfXWxAr5lYMc3oiseTepgQyRTHPDEZx7XD55cEuQ9S6W0xixwccARpttfNyw4P1StunHBklRmLO7ZVy5k8jx4dvasdWwUccdn/cOK3IxhY+dn6W3/G3IamZjp+QFvf3svDOwgP4I5w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=sgMc4RoS; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="sgMc4RoS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DB0B1C19422; Wed, 18 Feb 2026 07:49:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771400992; bh=cyY2K4B0Tpvc3/PV6vs7XKg00+TvRGtS46n9Pd1uc9k=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=sgMc4RoSKep/o/nwYkkE3GwLhiwmcLYVDGz4Jl65U4Vi697Rk5pnK1EcO68TKNxyX 6GGvwyZd2enlPxsc6hM6YTJ5OUO196VVJrRfrVNi3doYuP342wrejLfINWOq+Ey1ht s/+UQswEEGlG4kMr4KYFpKO8LH4T4B2dIZ0MbQgo5XiCMFseqCecXN7p/oMmCs/K8B AX63rKXnfV4pUm5W475GPsWgsFMlsmtjKQ31yHBO/+n/6CXrid+Rz50LQi5Gmk19OZ MvJ9lKCBch/AfgsOLXXztZOTOkS7VE4O89ERoSIS5pYTo9e2KvdFLWWM8NsOX6kZwr IbtSgpPc/3NBw== Message-ID: <9d08ddda-403e-458d-95e4-4e76915df85d@kernel.org> Date: Wed, 18 Feb 2026 08:49:48 +0100 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 1/3] dt-bindings: spi: renesas,rzv2h-rspi: allow multiple DMAs To: Cosmin Tanislav , Fabrizio Castro , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , Magnus Damm Cc: linux-spi@vger.kernel.org, linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260128215132.1353381-1-cosmin-gabriel.tanislav.xa@renesas.com> <20260128215132.1353381-2-cosmin-gabriel.tanislav.xa@renesas.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 28/01/2026 22:51, Cosmin Tanislav wrote: > All supported SoCs have multiple DMA controllers that can be used with > the RSPI peripheral. The current bindings only allow a single pair of RX > and TX DMAs. > > The DMA core allows specifying multiple DMAs with the same name, and it > will pick the first available one. > > There is an exception in the base dt-schema rules specifically for > allowing this behavior (dtschema/schemas/dma/dma.yaml). > > dma-names: > anyOf: > - uniqueItems: true > - items: > # Hack around Renesas bindings which repeat entries to support > # multiple possible DMA providers > enum: [rx, tx] > > Allow multiple DMAs to have the same name and only restrict the possible > names of the DMA channels, not their count. > > For RZ/T2H and RZ/N2H SoCs, limit the number of DMA channels to 6, as > they have 3 DMA controllers. > > For RZ/V2H and RZ/V2N SoCs, limit the number of DMA channels to 10, as > they have 5 DMA controllers. > > Signed-off-by: Cosmin Tanislav > --- > > V3: > * impose proper maxItems for each device > * impose maxItems for dmas property > > V2: > * new patch > > .../bindings/spi/renesas,rzv2h-rspi.yaml | 16 +++++++++++++--- > 1 file changed, 13 insertions(+), 3 deletions(-) > > diff --git a/Documentation/devicetree/bindings/spi/renesas,rzv2h-rspi.yaml b/Documentation/devicetree/bindings/spi/renesas,rzv2h-rspi.yaml > index a588b112e11e..cf8b733b766d 100644 > --- a/Documentation/devicetree/bindings/spi/renesas,rzv2h-rspi.yaml > +++ b/Documentation/devicetree/bindings/spi/renesas,rzv2h-rspi.yaml > @@ -58,12 +58,16 @@ properties: > - const: tresetn > > dmas: > - maxItems: 2 > + minItems: 2 > + maxItems: 10 As pointed out by Renesas, this is not correct or finished. I don't understand why Renesas people don't review THEIR own code instead, but send a patch correcting other un-merged patch. Really, start working on each other submissions. NAK Best regards, Krzysztof