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 D302D279910 for ; Sat, 6 Sep 2025 23:42:16 +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=1757202137; cv=none; b=EdrUb5W7nITiVx4i+71DTUvM71TcOIbI7lwxIk0mABtWoP+qb/w1oAelSd2stLC5UUlpjYXYnxG989ZqPL4B5cohBkgqQcqOZVzS4W3ON548vMZEqaTR4GVLuHzUhr/O23xWJz6oksH2rHG7wf88FU/xyde/rcuUWiZNkZpVm1U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757202137; c=relaxed/simple; bh=LxKDJYjxEHRwtAf+0ckocc8PU/qwK1aqu0lE/2eoWVw=; h=From:To:Subject:Date:Message-ID:Content-Type:MIME-Version; b=EDS2NEtLzb50biKjUA56XkoFtb14PMYCps1iIT6XMUSi4SZWFIzTXtSHtg3C7BhWA6XFYxFGgukdZEIOHzNyu5uyetzOFFEpWC5S3SAfJC2aRfBB/3Fo02LyGDsr7fWlqFjGr3R3MzKMbtbWJUHaJDXKMkLL7gGojv9njxI67CE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=m4aJ10Gl; 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="m4aJ10Gl" Received: by smtp.kernel.org (Postfix) with ESMTPS id 5319BC4CEE7 for ; Sat, 6 Sep 2025 23:42:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1757202136; bh=LxKDJYjxEHRwtAf+0ckocc8PU/qwK1aqu0lE/2eoWVw=; h=From:To:Subject:Date:From; b=m4aJ10GlgyPOXAvtJl8PxtgNEGRqdSLCxoZX8RzgC9JAQi60XNtjd/sEi6lLSJ1st obsmo2+miLyKNyWNfrEldwALpWA180DU7UnZuPWqZG0pwTczTRqmFQmRZoewx8STS0 oVTyXIkqnYHe1EGJCMoma7Wu8OBO0Ii6uQEMxGpc+rH3yd79D0I1d6mRfooY9ifMzV PfvpBPzakij3ZNyZihGxpjY9r7qmb+MPklwfT++6m9A7ajVlTs2P9HX7OLrh3b4trC drcx4OzWgdScQd0QOmn5D9ykW7KMAFjWYQQS9OFzmzDvUnUzmQLlLiYjKS3kOETOl3 J/iA2NO05KXzQ== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 40A0DC3279F; Sat, 6 Sep 2025 23:42:16 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-iio@vger.kernel.org Subject: [Bug 220543] New: MCP3428 scaling values are incorrect, three orders of magnitude low Date: Sat, 06 Sep 2025 23:42:16 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: AssignedTo drivers_iio@kernel-bugs.kernel.org X-Bugzilla-Product: Drivers X-Bugzilla-Component: IIO X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: phil@munts.net X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: drivers_iio@kernel-bugs.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter cf_regression Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D220543 Bug ID: 220543 Summary: MCP3428 scaling values are incorrect, three orders of magnitude low Product: Drivers Version: 2.5 Hardware: All OS: Linux Status: NEW Severity: normal Priority: P3 Component: IIO Assignee: drivers_iio@kernel-bugs.kernel.org Reporter: phil@munts.net Regression: No The values for in_voltageY_scale that the 6.12 kernel generates for the MCP= 3428 ADC are too low by a factor of 1000. The ADS1115 and the MCP3204 get in_voltageY_scale values around 1.0 (implyi= ng millivolts per ADC step) while the MCP3428 gets values around 0.001 and low= er (implying microvolts per ADC step). See also: https://forums.raspberrypi.com/viewtopic.php?t=3D391674 --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=