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 8F70D313E2F; Tue, 16 Dec 2025 08:45:27 +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=1765874727; cv=none; b=VYLjEz3Ow7Yrjzk3eDV5ELAcafhPi5JyTidR7NdQ4ADMV8se1eG3Jy3CpvKDiaWcXRN+oHJYxI9A+SYQSBDWruCtvVjO4KNHpUp2ibnWZcWXvawaUYDOSXgVPaxYfP0qbsnN0u8yCPBwiY+ldW4fW/RjSmWZa8q+2W7bpyNUFFw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765874727; c=relaxed/simple; bh=tvseRd0ZBKVZuxl0/2VvYZVVO718dYCkJYN9IBKiMek=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Xm/uLDwUfDp1rNRSmF7idhOsYk1DWGxyb1OD4KgdF5RMfN8DDvzYylAbwOoAdAuCTMBJsfqz/065Xam+iiHOkJg8GIydUPQTtxopfvuDBKsipUaTbi3SG7f6097QclIuQr+rqAAm3bj8wfxhgtdYlGSY49aZnKV83jU0rThdwZY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=QR7Uiw5V; 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="QR7Uiw5V" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A2840C16AAE; Tue, 16 Dec 2025 08:45:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1765874727; bh=tvseRd0ZBKVZuxl0/2VvYZVVO718dYCkJYN9IBKiMek=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=QR7Uiw5VgzfsE7U2kpUwyYuna6qcbU3xhKYDGw7qrT+JaDIQ0b7i73YSGqS77cDNW UTNhYKC+8o/f77bxcvYPR19JheTOlciBMoIBWrALFiOrqXbOl/JHnuTTQBxlTWJ2nP yPWNXIn0wJyGOnrZaBiykTUUDy/dAK+mp9lX69iV7gXRwdyWlABYY4KfpOwT+0Ckkt 0evz8jbMl1Gric++TNzBTHxA8gcRJFA/OwUGTGRSG5bcwDk4fK08uKw/n7zoX77mdI Hp/BD5AlYesfSLHaHF4nRPNzs8LLrjC55iXgDVXsofltBzxK+wwhlmn5ibZGMnog+E wKxcUd69ZdlPA== Message-ID: <83c771e7-f32b-48e4-91ab-d7c3b9746e14@kernel.org> Date: Tue, 16 Dec 2025 09:45:22 +0100 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 1/3] dt-bindings: dma: Add Amlogic general DMA To: xianwei.zhao@amlogic.com, Vinod Koul , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kees Cook , "Gustavo A. R. Silva" Cc: linux-amlogic@lists.infradead.org, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org References: <20251216-amlogic-dma-v1-0-e289e57e96a7@amlogic.com> <20251216-amlogic-dma-v1-1-e289e57e96a7@amlogic.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; keydata= xsFNBFVDQq4BEAC6KeLOfFsAvFMBsrCrJ2bCalhPv5+KQF2PS2+iwZI8BpRZoV+Bd5kWvN79 cFgcqTTuNHjAvxtUG8pQgGTHAObYs6xeYJtjUH0ZX6ndJ33FJYf5V3yXqqjcZ30FgHzJCFUu JMp7PSyMPzpUXfU12yfcRYVEMQrmplNZssmYhiTeVicuOOypWugZKVLGNm0IweVCaZ/DJDIH gNbpvVwjcKYrx85m9cBVEBUGaQP6AT7qlVCkrf50v8bofSIyVa2xmubbAwwFA1oxoOusjPIE J3iadrwpFvsZjF5uHAKS+7wHLoW9hVzOnLbX6ajk5Hf8Pb1m+VH/E8bPBNNYKkfTtypTDUCj NYcd27tjnXfG+SDs/EXNUAIRefCyvaRG7oRYF3Ec+2RgQDRnmmjCjoQNbFrJvJkFHlPeHaeS BosGY+XWKydnmsfY7SSnjAzLUGAFhLd/XDVpb1Een2XucPpKvt9ORF+48gy12FA5GduRLhQU vK4tU7ojoem/G23PcowM1CwPurC8sAVsQb9KmwTGh7rVz3ks3w/zfGBy3+WmLg++C2Wct6nM Pd8/6CBVjEWqD06/RjI2AnjIq5fSEH/BIfXXfC68nMp9BZoy3So4ZsbOlBmtAPvMYX6U8VwD TNeBxJu5Ex0Izf1NV9CzC3nNaFUYOY8KfN01X5SExAoVTr09ewARAQABzSVLcnp5c3p0b2Yg S296bG93c2tpIDxrcnprQGtlcm5lbC5vcmc+wsGVBBMBCgA/AhsDBgsJCAcDAgYVCAIJCgsE FgIDAQIeAQIXgBYhBJvQfg4MUfjVlne3VBuTQ307QWKbBQJoF1BKBQkWlnSaAAoJEBuTQ307 QWKbHukP/3t4tRp/bvDnxJfmNdNVn0gv9ep3L39IntPalBFwRKytqeQkzAju0whYWg+R/rwp +r2I1Fzwt7+PTjsnMFlh1AZxGDmP5MFkzVsMnfX1lGiXhYSOMP97XL6R1QSXxaWOpGNCDaUl ajorB0lJDcC0q3xAdwzRConxYVhlgmTrRiD8oLlSCD5baEAt5Zw17UTNDnDGmZQKR0fqLpWy 786Lm5OScb7DjEgcA2PRm17st4UQ1kF0rQHokVaotxRM74PPDB8bCsunlghJl1DRK9s1aSuN hL1Pv9VD8b4dFNvCo7b4hfAANPU67W40AaaGZ3UAfmw+1MYyo4QuAZGKzaP2ukbdCD/DYnqi tJy88XqWtyb4UQWKNoQqGKzlYXdKsldYqrLHGoMvj1UN9XcRtXHST/IaLn72o7j7/h/Ac5EL 8lSUVIG4TYn59NyxxAXa07Wi6zjVL1U11fTnFmE29ALYQEXKBI3KUO1A3p4sQWzU7uRmbuxn naUmm8RbpMcOfa9JjlXCLmQ5IP7Rr5tYZUCkZz08LIfF8UMXwH7OOEX87Y++EkAB+pzKZNNd hwoXulTAgjSy+OiaLtuCys9VdXLZ3Zy314azaCU3BoWgaMV0eAW/+gprWMXQM1lrlzvwlD/k whyy9wGf0AEPpLssLVt9VVxNjo6BIkt6d1pMg6mHsUEVzsFNBFVDXDQBEADNkrQYSREUL4D3 Gws46JEoZ9HEQOKtkrwjrzlw/tCmqVzERRPvz2Xg8n7+HRCrgqnodIYoUh5WsU84N03KlLue MNsWLJBvBaubYN4JuJIdRr4dS4oyF1/fQAQPHh8Thpiz0SAZFx6iWKB7Qrz3OrGCjTPcW6ei OMheesVS5hxietSmlin+SilmIAPZHx7n242u6kdHOh+/SyLImKn/dh9RzatVpUKbv34eP1wA GldWsRxbf3WP9pFNObSzI/Bo3kA89Xx2rO2roC+Gq4LeHvo7ptzcLcrqaHUAcZ3CgFG88CnA 6z6lBZn0WyewEcPOPdcUB2Q7D/NiUY+HDiV99rAYPJztjeTrBSTnHeSBPb+qn5ZZGQwIdUW9 YegxWKvXXHTwB5eMzo/RB6vffwqcnHDoe0q7VgzRRZJwpi6aMIXLfeWZ5Wrwaw2zldFuO4Dt 91pFzBSOIpeMtfgb/Pfe/a1WJ/GgaIRIBE+NUqckM+3zJHGmVPqJP/h2Iwv6nw8U+7Yyl6gU BLHFTg2hYnLFJI4Xjg+AX1hHFVKmvl3VBHIsBv0oDcsQWXqY+NaFahT0lRPjYtrTa1v3tem/ JoFzZ4B0p27K+qQCF2R96hVvuEyjzBmdq2esyE6zIqftdo4MOJho8uctOiWbwNNq2U9pPWmu 4vXVFBYIGmpyNPYzRm0QPwARAQABwsF8BBgBCgAmAhsMFiEEm9B+DgxR+NWWd7dUG5NDfTtB YpsFAmgXUF8FCRaWWyoACgkQG5NDfTtBYptO0w//dlXJs5/42hAXKsk+PDg3wyEFb4NpyA1v qmx7SfAzk9Hf6lWwU1O6AbqNMbh6PjEwadKUk1m04S7EjdQLsj/MBSgoQtCT3MDmWUUtHZd5 RYIPnPq3WVB47GtuO6/u375tsxhtf7vt95QSYJwCB+ZUgo4T+FV4hquZ4AsRkbgavtIzQisg Dgv76tnEv3YHV8Jn9mi/Bu0FURF+5kpdMfgo1sq6RXNQ//TVf8yFgRtTUdXxW/qHjlYURrm2 H4kutobVEIxiyu6m05q3e9eZB/TaMMNVORx+1kM3j7f0rwtEYUFzY1ygQfpcMDPl7pRYoJjB dSsm0ZuzDaCwaxg2t8hqQJBzJCezTOIkjHUsWAK+tEbU4Z4SnNpCyM3fBqsgYdJxjyC/tWVT AQ18NRLtPw7tK1rdcwCl0GFQHwSwk5pDpz1NH40e6lU+NcXSeiqkDDRkHlftKPV/dV+lQXiu jWt87ecuHlpL3uuQ0ZZNWqHgZoQLXoqC2ZV5KrtKWb/jyiFX/sxSrodALf0zf+tfHv0FZWT2 zHjUqd0t4njD/UOsuIMOQn4Ig0SdivYPfZukb5cdasKJukG1NOpbW7yRNivaCnfZz6dTawXw XRIV/KDsHQiyVxKvN73bThKhONkcX2LWuD928tAR6XMM2G5ovxLe09vuOzzfTWQDsm++9UKF a/A= In-Reply-To: <20251216-amlogic-dma-v1-1-e289e57e96a7@amlogic.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On 16/12/2025 09:03, Xianwei Zhao via B4 Relay wrote: > From: Xianwei Zhao > > Add documentation describing the Amlogic general DMA. > > Signed-off-by: Xianwei Zhao > --- > .../bindings/dma/amlogic,general-dma.yaml | 70 ++++++++++++++++++++++ > 1 file changed, 70 insertions(+) > > diff --git a/Documentation/devicetree/bindings/dma/amlogic,general-dma.yaml b/Documentation/devicetree/bindings/dma/amlogic,general-dma.yaml > new file mode 100644 > index 000000000000..8b9cec9b8da0 > --- /dev/null > +++ b/Documentation/devicetree/bindings/dma/amlogic,general-dma.yaml > @@ -0,0 +1,70 @@ > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/dma/amlogic,general-dma.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Amlogic general DMA controller > + > +description: | > + This is a general-purpose peripheral DMA controller. It currently supports > + major peripherals including I2C, I3C, PIO, and CAN-BUS. Transmit and receive > + for the same peripheral use two separate channels, controlled by different > + register sets. I2C and I3C transfer data in 1-byte units, while PIO and > + CAN-BUS transfer data in 4-byte units. From the controller’s perspective, > + there is no significant difference. > + > +maintainers: > + - Xianwei Zhao > + > +properties: > + compatible: > + const: amlogic,general-dma I don't know what you mean by "general" but it feels like wildcard, not SoC, so that would be a no-go. Read writing bindings or several talks about this. Best regards, Krzysztof