From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E72F0E9A75A for ; Tue, 24 Mar 2026 10:01:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=a10qvM0jOqfcxKfnXqgQFScAjBZVA/BHvJi+0xfNAtE=; b=3+LOc50zr5rDJ0spPV5L24LCbH QlgerawCw929jtRefsXwsxWcHfEp2GOGAQ+cImfr1Dq4x0Gris6bUih1Xb5IGniFw9yRH2ctHXfNg 2zW4POa+ikAyhChowXf14O7wPkJPgFJA1/L8pH0CNAlY/1/CCkrkl1Pvzpf0bE7/wCLELgqBi9tlG v2+hJZQDHkUqyAK/AaklnXiRW2qx97bqMsaTh57v0LK84+uHqR1W24OtKZIn4uSHhiMr/WU+WTcW5 DAtfnshqIjdVZVsSQTZ+dHa+FMg+qno5bVIi+q4oYJriElYn0pZlc/k+5HxWW0oBvfTdNN1DhOpDo GRsZISIA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1w4yZV-00000001AQ6-3pR2; Tue, 24 Mar 2026 10:01:13 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1w4yZU-00000001AQ0-2Hz6 for linux-arm-kernel@lists.infradead.org; Tue, 24 Mar 2026 10:01:12 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id A1FE760103; Tue, 24 Mar 2026 10:01:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A20DFC2BCB2; Tue, 24 Mar 2026 10:01:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774346471; bh=6RobQ/t7aqOfdNVZFPi981wKZ2V6PDKds3DAR08YH+A=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=AXf6CsO35okX6Yk5koeapw9oYHjFuJ7aJ3tEnSwwODkzBl+3Uxg2zV51gkW7D8OBf sE+SKbQHDPmOktruAofANWqCwTqES977D2cwjN0Gcw5RludWsH9ZFs/3xpUeAPCNV2 i5AVVUFkWk9c24zFk9WyxjdM7A9uyjDYWCKZRDEecPqCUt/btIg5Lcaks6jbf+GKR0 abE0QK9OJDe+lhRn8EhoXlKQRwhIWwdy1qLASH3DXSskGqqhmAKEBa76pZj5J4bXBh BNONF98x5F6OlgFp3SpgrS9oFcRYN84n4u8yX0WxJHU8zetg7bJybuLrdPW0t1YJFw h8bMXyGdzrVEw== Message-ID: <5a9f84fe-5827-48e7-8e4e-699cf8ae4776@kernel.org> Date: Tue, 24 Mar 2026 11:01:05 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/2] ARM: dts: st: spear: fix dtbs warning on spear thermal sensor To: Daniel Baluta , Gopi Krishna Menon Cc: rafael@kernel.org, daniel.lezcano@kernel.org, rui.zhang@intel.com, lukasz.luba@arm.com, robh@kernel.org, krzk+dt@kernel.org, vireshk@kernel.org, conor+dt@kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, soc@lists.linux.dev, simona.toaca@nxp.com, d-gole@ti.com, m-chawdhry@ti.com References: <20260323133814.14152-1-krishnagopi487@gmail.com> <20260323133814.14152-3-krishnagopi487@gmail.com> <20260324-smoky-radical-hyrax-1274a9@quoll> 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: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 24/03/2026 11:00, Daniel Baluta wrote: > On 3/24/26 11:26, Krzysztof Kozlowski wrote: >> On Mon, Mar 23, 2026 at 07:08:09PM +0530, Gopi Krishna Menon wrote: >>> Running DTBS checks on st/spear1340-evb.dtb results in the following >>> warning: >>> >>> thermal@e07008c4 (st,thermal-spear1340): Unevaluated properties are not allowed ('thermal_flags' was unexpected) >>> from schema $id: http://devicetree.org/schemas/thermal/st,thermal-spear1340.yaml >> How is it possible if there is no such file? >> >> Did you just add new warning in patch #1 and then claim in patch #2 that >> you fix it? >> >> You completely miss the point why this change is needed: how could the >> DTS work before? It could not. And that should be your justification for >> the patch, with explanation why it could not work. > > Correct me if I'm wrong but I think there was a hidden bug here  > > drivers/thermal/spear_thermal.c:spear_thermal_probe: > >       if (!np || !of_property_read_u32(np, "st,thermal-flags", &val)) { > »       »       dev_err(&pdev->dev, "Failed: DT Pdata not passed\n");                                                                                                                          > »       »       return -EINVAL; > »       } > > So, the driver was checking for the correct property as pointed by  Yes > > bindings/thermal/spear-thermal.txt but the dts was using the wrong No, DTS had two properties - correct one and incorrect. > > property name: arch/arm/boot/dts/st/spear13xx.dtsi » » » thermal@e07008c4 { » » » » compatible = "st,thermal-spear1340"; » » » » reg = <0xe07008c4 0x4>; » » » » thermal_flags = <0x7000>; » » » }; And because this check is wrong: > >       if (!np || !of_property_read_u32(np, "st,thermal-flags", &val)) { > > people really didn't notice it. > > The check should be: > >       if (!np || of_property_read_u32(np, "st,thermal-flags", &val)) { > »       »       dev_err(&pdev->dev, "Failed: DT Pdata not passed\n");                                                                                                                          > »       »       return -EINVAL; > »       } > > So, this actual patch has uncovered a bug!  Yes. Driver also has bug, so probably was never working. The point is whatever commit is doing, the dtbs_check warning is not the justification, because it was introduced by this patchset. Best regards, Krzysztof