From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=209.85.222.176 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794348755; b=MzSpp4D5216W7mDb2fnGKUut2molZaJNyCOdGg4sL1xSSHZQuofHz5LpTS/iO9+5z9Nx cNttgJZw1QfyBZoFjGWJk26YPxSYtBA8jLZX3UXmyw5EoxgbNGVKeOGg6g8FEpsi4vvuy BKNoKZLH+ulXbACEHCXDZlarSe86deI0YJN7UkrkgbKWkM9phAAO1QSSc5U0/o5DjXGUi 7ySMHy7Wf9lTIbjD3LIctj0b+paazjRA8ijjD0dIevqcCcLib0EmBV3HG+tHclrQTwfVR olni9TRqtYmB/Hi0jycIIJvwQh3lEPBfu6gLW4E+wPp5Zsh2gNLS4mBZvR/13UjUDCg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794348755; h=DMARC-Filter:Received:DKIM-Signature:X-Google-DKIM-Signature: X-Forwarded-Encrypted:X-Gm-Message-State:X-Gm-Gg:X-Received:Received: From:To:Cc:Subject:Date:Message-ID:X-Mailer:In-Reply-To:References: MIME-Version:Content-Transfer-Encoding; bh=QvuQY+dI7Cg/hO7294zVJsdHa2mxSYpqdORdJaVQ9KA=; b=1MiLYkUBhZDPhxgrpjIqZFKViDl5PFDm62z+0VKkxk5pnbMQ2KwGFd947vB3/Xxix3+E vkgJR1Yi4VxQVS3hlxeX0odcBM64rpQ15qqsd5Pz/4n0IuKy4oOhPluZfUdIen48o71+5 Zw8R+cOb9WdfxI9nzvub4FpYrLJiuhEDrI+UkNf4smFo/8WTOjXVI0+khvcnvXdEgDc0x 4yJ6z6naLabTVs8yFBs8LLwijBZyPk2TITDDp+JQ2YNFzPEh9pajIQ5NZROdTNOhp55Tx PUB1SkEXD1fdG7S53oQjq2lr5XUYadOe9Txj4pY7Ah8lSkpHijuWeJiJHALx7OdxvjA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20260707 header.b=X7aTYqVP; arc=none smtp.remote-ip=209.85.222.176 Received: from mail-qk1-f176.google.com (mail-qk1-f176.google.com [209.85.222.176]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 73534606A331 for ; Tue, 10 Nov 2026 22:12:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 73534606A331 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20260707 header.b=X7aTYqVP Received: by mail-qk1-f176.google.com with SMTP id af79cd13be357-93e64d52949so223156885a.1 for ; Tue, 10 Nov 2026 14:12:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20260707; t=1794348754; x=1794953554; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=QvuQY+dI7Cg/hO7294zVJsdHa2mxSYpqdORdJaVQ9KA=; b=X7aTYqVPbG5cqr4kNYOlVXseMw8UYfuxiw/e4mO4JL6PiwzbyMKDAmXe2s4foYJNSO 7wGvtSx0Bc6XbtZufCkUgha15tfTNZ6Q+9TXyr/WcRWwEEFdaxS5SZDnpFWRCO63nvHM cVYbbaBoC14Fig9LfOCqp/OT+KqgF+yUgzS+KFA3wPLGixmpidGjInk5cM8AW+lE3SAY XcneGJKlEUn+TxITC2PzRKuv9JUUTkske6YVJBgotxZgLcZnpUWlvlKxe36zzHsNx6u8 fFuuivfjtUYX0yBBhbmMPWQLnIXjzxC92ASwejNyNerUOyd1xmhfg6kbc1erixnCtEED 5bQQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1794348754; x=1794953554; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=QvuQY+dI7Cg/hO7294zVJsdHa2mxSYpqdORdJaVQ9KA=; b=TvJWtB80uEULW1ba6XckLiGE0k/Qp7KigVQuKEVgp1PeKVcVvl0AzWKyP1AcQTdxy+ bO/AHy2FA5wtVor2g+c6QmVxlFJP8msyOdz2ycNM7IPU9FyDXr22cRm8KENcrFpEm/0R GYXgnpeFMAkW6NEwQHakV/syaDzB48xnudwFGtcr496nj1U4gAhXOBtkCgsNmmWr4SQU beT11IabVl/m1dsjQSBNizTl2bSeuTrg0GUhOUMJOJvZPM7uzPOMf0rhuxiHMwgR2kOI C/ZsKtycoLbxhtCbbF3MVSTNRSdZn65ZhpIqCgydDQ1MG1U/BPOtxD3qf/53UfVqVFsT 6eTg== X-Forwarded-Encrypted: i=1; AL+hErH8r69sQB2iYDZJ5zkhfJ7+m+JK5AKMRc+phVLwvNIJyAj3nio/EZX3Yg0z+PXUziyMsnZbMRQw0WemO3M=@vger.kernel.org X-Gm-Message-State: APuU4Z9xFa+XNRJvxd6J04OvK45aj/Ei84opCJgDVHo7toBZ3H8jjWJO nqGPjbVDWDlKCuRJjatHbGXyh8XRfL9fFFIeCnMftSNzHbz1WcF2vCgV X-Gm-Gg: AYBFou2r3S8/pSpCOW+gUyJ2x9gP7tKrPbvuMsPTDdtFNQQ/F8Reys0lg8tOObAc4qO qILu2QqMkCHyk2iqxHKLHWQkWt/ecNj6vUTODKthk78gnIgbUL7L+fUlSdxGlm2Sv3EDwTtJ1sF Sq+n027/2ilPseJhoGBfcLwtNEw5VK2w9cZsNImVkd/aNRTefWJZzQXOv41JyDzjLvozQqz/y71 f5IWsuEWSErBWd+rTpaUCeAD3ltxTqCWF+/MaLMgqGi5fK4akO8TBppsNp1pC1t5FXaLIyU81Xg ri/EGyzdzl6YXnAaJH6UhpEV3f1VaPEFr4jotP9a1onBlB0t+8VwDXtCbx/oMJwDcOVv/0KUvyy 5qpcijll399tayqu01hOJR/bnMKEfs5uMWsEgYXM9zdW/M00NNhziBvNQ0hEFcHs1AWp0o9OmaL 3PX8MzcfrCQpW462sFmYQj7KZ3PMfPFKjfqEjfXs3G1DGwr11Xi7YRplMsHzx8PszRFKXGq7KRy jSRLnRB6BrEy5kmfr2HasOBcpaVW1QUgg2oxCg8KMXH+ZS5Y4rpU/yaanXAroiOhpSTqu67+ZWk 4kNSoxsWaeIN0UnaaExgP87v1pihcggBuIb/x0sWY2YaQwU67IVPRRIHqK5LtVgfly3UPZEpCID lB3MF1Mi6VjTgr+9C76yVAczLeEAL0h+RjzPy1e924HEdP6zFTlXK0JHgETaRx4cQZ45o2NAkto +w7mEnKeogMfNJ707CgYps+WDbl8T35iEYF7lmqaauZDDAloj2bE025+20qgA5vd8feZ5eAp2Sv g5hU9AzUL8WPWV3RR2A+dEEtIg1fnUPu6ohojUMHsgY1w== X-Received: by 2002:a05:620a:6ccd:b0:93f:6e05:22eb with SMTP id af79cd13be357-947b004790fmr62140885a.48.1794348754197; Tue, 10 Nov 2026 14:12:34 -0800 (PST) Received: from LRMS.tailf8556c.ts.net ([2600:4041:5024:4b00:940a:c6ea:f292:3644]) by smtp.gmail.com with ESMTPSA id af79cd13be357-9479e73a8fasm328270285a.7.2026.11.10.14.12.33 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Tue, 10 Nov 2026 14:12:33 -0800 (PST) From: Jesse Casco To: Nihal Kumar Gupta Cc: Bjorn Andersson , Konrad Dybcio , Abel Vesa , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bryan O'Donoghue , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Suresh Vankadara , Vikram Sharma , Konrad Dybcio , Abel Vesa Subject: Re: [PATCH v2 3/6] arm64: dts: qcom: glymur: Add camera MCLK pinctrl Date: Tue, 10 Nov 2026 17:12:32 -0500 Message-ID: <20261110221232.3883-1-jesse.casco@gmail.com> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261015-glymur_camss_dts-v2-3-e7b1f403146f@oss.qualcomm.com> References: <20261015-glymur_camss_dts-v2-3-e7b1f403146f@oss.qualcomm.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Thu, Oct 15, 2026 at 04:22:28PM +0530, Nihal Kumar Gupta wrote: > + cam_mclk4_default: cam-mclk4-default-state { > + pins = "gpio100"; > + function = "cam_asc_mclk4"; > + drive-strength = <2>; > + bias-disable; > + }; I've been running this series on an ASUS Zenbook A16 (UX3607OA), which has an OV02C10 on MCLK4 at 19.2 MHz. With 2 mA here the sensor shows horizontal banding, and its frame period stretches by about 9%, whenever the internal DMIC clock (LPASS LPI GPIO6, 2.4 MHz) is running. The bands are already in the RAW10 frames, and the sensor test pattern is clean, so it looks like the MCLK pad itself rather than CSI or the ISP. Changing only this pin to 6 mA fixes it. A/B/A across three boots, same kernel, fixed exposure/gain, row high-pass RMS / frame period: MCLK4 mic off mic on after 2 mA 0.96 / 33.28 ms 20.44 / 36.17 ms 1.04 / 33.27 ms 6 mA 0.89 / 33.27 ms 0.90 / 33.27 ms 0.90 / 33.27 ms 2 mA 0.95 / 33.27 ms 15.33 / 34.37 ms 0.93 / 33.28 ms At 6 mA the frame timing holds steady at 33.27 ms and the image stays clean in every phase, including while the microphone is recording, which is exactly the case that couples interference into the 2 mA clock. Normal camera use with the mic on is also clean at 6 mA, so the fix holds up on real hardware, not just in the capture script. Could cam_mclk4_default use 6 mA? If you'd rather keep 2 mA in the SoC dtsi, I'll override it in the A16 board DT instead. Thanks, Jesse