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smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=SgKG248P; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D8D9D606A330; Fri, 13 Nov 2026 12:43:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=SgKG248P Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4E2D91F000C7; Fri, 13 Nov 2026 12:43:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794573820; bh=kMKP29RyHKjNRqJmoHbWeAmE+St+tTfGn10VMRCGONI=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=SgKG248PDgjNTNmb3lcvA9hYPi33ggNOq2ENNk9W2Sqfn9W0ubdy2ydAwgRWPcX1b dJ3RMA90dtXv/MDxYwEjnv/5FL/lBlv4VL8t86Vfe8G6qYhBwS/qYtX9xCvhstdceW V9FiO+aVtXIiOxDxPlwqbFATeYMtPRpaFRvie6sWVwUcLmzDt58KIgEX3adOMjknD/ m6UGccBBU/0nNqy8ybTYrE2M3eYldyHK9Ct6NPKaPHnkIo2T7GLEhWPs2yOo7T6rlo gBR1fr0kCzXejNiTc8THXV04lTTj+2OjAvltB3fprRzTzQJCiUp+Qhxu7f7U3jt3Ld heTWCnGsax0bg== Message-ID: <45881f93-3f30-49e4-98cb-677814b85664@kernel.org> Date: Fri, 13 Nov 2026 13:43:33 +0100 X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 2/3] dt-bindings: trivial-devices: Add National lm77 temperature sensor To: =?UTF-8?Q?=C5=81ukasz_Majewski?= Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Shawn Guo , Guenter Roeck , Daniel Baluta , Jonathan Cameron , devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20261112163703.3358164-1-lukma@nabladev.com> <20261112163703.3358164-2-lukma@nabladev.com> <20261113-roaring-relaxed-oryx-5cfa1e@quoll> <20261113120947.6c9fb820@wsk> <20261113132231.631638ad@wsk> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit On 13/11/2026 13:22, Łukasz Majewski wrote: > Hi Krzysztof, > >> On 13/11/2026 12:09, Łukasz Majewski wrote: >>> Hi Krzysztof, >>> >>>> On Thu, Nov 12, 2026 at 05:37:02PM +0100, Lukasz Majewski wrote: >>>>> Add "national,lm77" as compatible for the National (now TI) LM77 >>>>> digital I2C temperature sensor. >>>> >>>> Are you sure this is a trivial device, not like LM75? No >>>> interrupts, no VS supply? Datasheet disagrees. >>> >>> In my case the T_CRIT_A and INT are not connected on the schematic. >>> Moreover, the V+ is connected to board's 3V3. >> >> But they are there and binding should be complete. >> What's more, >> existing lm75 binding does not require these so there is no issue >> adding to the existing binding file. > > Please be aware that internal operation of lm77 is a different than > lm75 and hence it has its own Linux driver. > > It seems like I cannot re-use the lm75.yaml and will need to add new > national,lm77.yaml as lm77 has two interrupt outputs for hysteresis > (lm75 has only one interrupt). Can be a new binding file, "national,lm77.yaml". Indeed it looks like it has two lines, unlike 75 variant. Best regards, Krzysztof