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 A986F230BEC; Mon, 16 Feb 2026 07:27:57 +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=1771226877; cv=none; b=rfpV6uUM1pjtXw3F3MdqS8NFMomsOX5zfIXgPb3kb6CI0jwoV8cltoSQlVcoiJ8YRvkoTxc3XtaBpeVOINPBWL/IDXMkeh9+OowkPViV4XlaR0X8OZyn/ZZNWXxFRH67cJoNygglJuiJsWQsdAQZfD/HcXhC0fQhXFB2pH42WnI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771226877; c=relaxed/simple; bh=ooR1hGotVLqFb7LsE1CMvjK8LxRyPmIRZls0jbAyCWI=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=dZcka7h9fqvkjH3389wbg2siGIPdnBFX41wlObwzm9JNKwoKnRJOnOubDRs37P447KOIEGitWCpVnxqit/Xzx0yWJfF38S+hLg+zFFVi3ummMXcSTcou+0znJ/i9lOhttvqnC4lnL+qw5J+Gn7BkTNSJsXrKt61dSmR+NjdbM+k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Ne1IqysA; 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="Ne1IqysA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6D6DAC116C6; Mon, 16 Feb 2026 07:27:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771226877; bh=ooR1hGotVLqFb7LsE1CMvjK8LxRyPmIRZls0jbAyCWI=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=Ne1IqysAwEcXBsu9OjBQG141la6rW5u2NQlvmeVu2eSlsrAph0uTkebC+uTq3IB3M aUsHpWFdf6IsyTRxtfCfu0LjGpc6/chexi5bT07PMOLLIpWFykOxY4MbyrUSa5xKS7 S6dY3l326EjGFzxPdV8PEUeLfwquDlVVWIiAhYaDWtsqRCD2D/JlGE1rMo9Y7gvZep qlnhwAtNyKP3SFDzrWpLOk7PmIxshh2RR0IOZToCC42vJvLxbx9TNtmugloVN9ziMH 9+Yujs3iqj8lrorKIpsJZNjXsgTzMvcCZXvPhjqXpkZYrISxK23Or33zVpm4SraCzq rQzt4cmFQM5mA== Message-ID: <1326c41d-e4cf-493e-a758-364edaddd04f@kernel.org> Date: Mon, 16 Feb 2026 08:27:52 +0100 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: [PATCH v4 1/2] dt-bindings: iio: light: vcnl4000: add Capella CM36686 and CM36672P To: Erikas Bitovtas , David Lechner Cc: Jonathan Cameron , =?UTF-8?Q?Nuno_S=C3=A1?= , Andy Shevchenko , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Peter Meerwald , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht, phone-devel@vger.kernel.org References: <20260212-cm36686-v4-0-8f587d4a72bf@gmail.com> <20260212-cm36686-v4-1-8f587d4a72bf@gmail.com> <20260213-unyielding-pistachio-ape-deda74@quoll> <3a20c906-647c-458f-a118-c7927495e7ef@gmail.com> <8fb27a7a-82dc-443b-bcc4-21007783fc54@kernel.org> <880ddcad-a92e-43bb-ad5c-d6f2f353d182@baylibre.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 15/02/2026 17:16, Erikas Bitovtas wrote: >> But CM36686 is fully compatible with CM36672P, right? >> >> So this would make sense? >> >> - items: >> - const: capella,cm36686 >> - const: vishay,vcnl4040 >> - const: capella,cm36686p >> >> > If you try to use CM36686 compatible for CM36672P, proximity channels > will work, but in_illuminance_raw will return 0 and changing illuminance > parameters will have no effect. That is because CM36672P is a proximity > sensor only and the register fields for ambient light are reserved. > And if you try to use CM36672P compatible with CM36686, it will work, > but only proximity channel will be available, even though CM36686 also > can sense light. So clearly CM36672P is the superset and should be used with CM36686 fallback. Lack of the fallback how the patch is written now is a mistake. Best regards, Krzysztof