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 81E2C19C546; Mon, 13 Apr 2026 09:16:12 +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=1776071772; cv=none; b=BcyBPy4pBbfUntSurubXe0vvnvvGUUbfT3xicF1KBSXsG9B5Uh8wqskmNE2CSZi7atr8SF19BNxGBkdOZgkzV2Afe3mHuh+bNnDYZup+DRat9j0J1qEP+BCOwSI5TY+WR9SyREkmRXlwfDqE5nAfwyg2x3e8Hb6sTDUipvj8/gw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776071772; c=relaxed/simple; bh=LnewzL8lYzR8dZN1bDuHUa0OcaqXZRbTZ4xt8UbQ0HM=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=QRGuTIP5843a47zikreOk205Jm3l0kCC/icpfjqWLagB51MGAUlD/iXXr0CpQY41gLXrSS5fP7Cdw1fFuz29foZkAZ4K+V/BvzVbS9d0/GoXLccwWvq/Bs2UmR9WulRpjCgvDISN3sX7rv9+6pQ+YDYGsFvl0YjpgBQl/IIaLMQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=oBaxEdI1; 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="oBaxEdI1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7B11AC116C6; Mon, 13 Apr 2026 09:16:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776071772; bh=LnewzL8lYzR8dZN1bDuHUa0OcaqXZRbTZ4xt8UbQ0HM=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=oBaxEdI1iug2lTkUC6QmhXec9Klo34XqI8As/SmOGqH8Z8yXORdNFeZ1CUPsgGZSH av0dZOvUkkIpV7Pxhpl9TyzPJtRBXVzQYeCQ8TskjCSUnmAYehgH7G7F/m2821ofHv abbTln3X6tVvSOvBiKt4EQdt2mDGM9FlFxM5Ya2JCBShOt2erxfyZlCUxZkKk8wkKM Eot9x6+pQExFmLfOJqvAyfdYh8qcHEO+4WdCRnw7L6PrFBKTnEhddFo9yXcm3t2o3e 12JN8ArlcvBaUy2g8qxLe7a0CDoGEHG0zSHcIGwf63j+pMyf8CPTHkEaFqCIlY2k5I ODkMbvnjRef4w== Message-ID: Date: Mon, 13 Apr 2026 11:16:08 +0200 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: Phandles To: Kyle Bonnici Cc: Herve Codina , "devicetree-compiler@vger.kernel.org" , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "devicetree@vger.kernel.org" References: <20260412145144.4737fde6@bootlin.com> <20260412173916.7a971a45@bootlin.com> <163D807F-0F83-4282-B182-7A18B124D3E6@hotmail.com> <00f0d18e-feba-45cd-af92-f737c9b965ef@kernel.org> <7F2DF84C-A010-4BCB-B973-D17BF58EDCF2@hotmail.com> <74FB5D90-08F5-422E-9DB2-A00E74E25422@hotmail.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit On 13/04/2026 10:40, Kyle Bonnici wrote: > >> Please wrap your email responses to mailing list style. > > Hope I got this part right in this email! > >> To repeat my question: >> What does '1' stand for? > > ‘1' was just an random value to show the issue. Please note that > this issue has more context. This can all be found tin the Zephyr issue You cannot have random values. I quoted the DT spec. > https://github.com/zephyrproject-rtos/zephyr/issues/107066 > And also on the discord link. Well, we don't use discord but IRC... but that github issue also uses "pwms = <1 &pwm0 1 20 PWM_POLARITY_NORMAL>;" So again - what is "1"? I am asking because if you use incorrect value as phandle value, then DTC warning is obviously expected and nothing to fix here. > > To summarize, In zephyr the dts is pickled to a header file on > compile. Zephyr build system uses the bindings to determine types. > Any property with no type will not be pickled. I know, but this is not what you asked, right? You asked why phandle has to be the first entry in phandle-value type? I responded that DT spec makes it. Now to determine that DTC is correct or not correct, we need to understand what "1" means in this context - is it a valid phandle value? > > `/zephyr,user` node is a convenience node that does not need a binding > And types are inferred from values not property names. > > The reported issues: > - Zephyr is inferring a type but the DTC compiler is inferring another > type and reporting w waring about it in the build output Are you reporting bug in Zephyr or DTC? > - Zephyr does not infer types for properties with no bindings, hence > If any of mention properties are used and node has no binding for > that property name, zephyr will ignore this, but the DTC reports a > warning that contradics Zephyr's implementation. We discuss DTC here, yes? Whether it has or has not a bug? Please help me to understand the topic. Why would we care about Zephyr's implementation? It's Zephyr's problem and I am not a Zephyr developer. I am not saying that it is not important, just saying that I am not the audience to discuss it. Best regards, Krzysztof