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 20C5F3EFD09; Tue, 10 Mar 2026 08:43:55 +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=1773132235; cv=none; b=rD64nBXAR/xlr7g9Nns1sOJ9bT6rPliEKd0HlPfKKMooBWCokpgKjQPtK3RlP9dBGD9V7FlNBRzminusNMjnXkY2T1Y4Qt12/rRCUvEKB4Yvdy4kkyq2YyTc3Xeiidm309piNnH7TC+8tzMM1PO+S+HbxDeNltfMAFsIhvDV3zI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773132235; c=relaxed/simple; bh=wqjOqMSBFdLZgdLN6WIO4975XW3UzWi+uzudktxCHos=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=oytUdK6MAv3ktPZ/XVe+NRuVUHQT1CxdiBtYnwK7/Z57apQ+ZmNlRFAiza75T9gRtxXJs8NcQQJlEuz4IyV1qijadZIIElFhIaV1LTtCdQDGW0GwzV5h2UZrgxysMfYdfAsVFylzt7e7V+R7eBgVqYTlslaeVDY2YiCqa1Tp3Tc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=D34OlJN+; 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="D34OlJN+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B9BF4C19423; Tue, 10 Mar 2026 08:43:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773132235; bh=wqjOqMSBFdLZgdLN6WIO4975XW3UzWi+uzudktxCHos=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=D34OlJN+dOdfcuDNy/HTMGICQ8fjN9jaeEaib1pVr3OJe9S5fZZNr+v3upjh99Vki iCvp8vccv5PF29ud3MKawdiUqAGrQ8b5Lif4ld1iO+aKIWVU8fAb9O3pZJu4jAjrze yFmQDZfCRMuNfMY0CnKKvpZMovbPQUUHfXLPOTihEC6yO93dbe5+7b5ViY2kJLkoSu FxmyeLZ5+R1J7R1GXIb4UMZFHQnJK1Q2d/11G7f2aMRzM1lvUnUcYD6mRkeXIQFZvm 0zhKwaZqlKqi7sRw8psPgBGTi8kZ9gAutHxvcd9K0BpUyhJgxJIzw3i/jkGklaxpgE bChNN0JlLuwdQ== Message-ID: <5add0a0b-e6da-40ae-b7cc-e64910739355@kernel.org> Date: Tue, 10 Mar 2026 09:43:49 +0100 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] dt-bindings: mark unimplemented AXI snps,kbbe snps,mb and snps,rb To: Conor Dooley , "Russell King (Oracle)" Cc: Andrew Lunn , Alexandre Torgue , Andrew Lunn , Conor Dooley , "David S. Miller" , devicetree@vger.kernel.org, Eric Dumazet , Giuseppe Cavallaro , Jakub Kicinski , Jose Abreu , Krzysztof Kozlowski , netdev@vger.kernel.org, Paolo Abeni , Rob Herring References: <20260309-spill-gradient-b6f9440f3a26@spud> 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: <20260309-spill-gradient-b6f9440f3a26@spud> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 09/03/2026 18:49, Conor Dooley wrote: > On Sat, Mar 07, 2026 at 12:05:18AM +0000, Russell King (Oracle) wrote: >> Any chance of a review from the DT maintainers please? > > Sure. > >> On Wed, Mar 04, 2026 at 05:30:32PM +0000, Russell King (Oracle) wrote: >>> Mark the AXI snps,kbbe snps,mb and snps,rb properties as not >>> implemented. These were introduced by commit afea03656add ("stmmac: >>> rework DMA bus setting and introduce new platform AXI structure"). >>> While stmmac has code to parse these properties and save their values, >>> these are written to write-only struct members - no code in stmmac >>> has ever read their value. Hence, these properties have been non- >>> functional from day one. > > If they're not implemented and have never been used, could we delete > entirely? Note that they also appear down around line 600 in the file, > in the stmmac-axi-config section. > We should not document what is and what is not implemented, thus this patch is not correct either. Either you deprecate properties, based on some argument, or you leave them untouched regardless whether they are implemented or not. If someone re-implements them next week, are you going to change the binding? Usually no, unless these are not really hardware properties. Best regards, Krzysztof