From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f52.google.com (mail-pj1-f52.google.com [209.85.216.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0769A15C9 for ; Mon, 3 Jun 2024 01:28:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.52 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717378093; cv=none; b=hm4fRSwMSITJf2OfYZIiA6DEl1uCEO66j0d4nFRKfE/2OG+PbS17cA7IzGi/xLS92MqZM6KcXaCy/ax75OwwkTZcEJkumkX5RYkkHYp335TNbjMupGbkmMaD00Nr+yYp3fJJf5Y44Z4DiLZdogHMpTNWtYphFVOmWC+hLc3Ho8Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717378093; c=relaxed/simple; bh=ABNibF/jy35x5qufZvG/CN8NbHqxNsF8zjiL53ElLjY=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=PpszSB6sMQh5oZIEVqSv6tEOUSWbrI4ptWekfBwXNQ4YNBI5tN55OMIQ0jXtB/fcSxJ3PzYqIYU2Ifs670hcZAEcFhTp/1xEn+ZLF9RnIubtCYZaHG7a9XCrPVl8mvAAsVBm9+xzgpquHcfI+n//VH6845OkqeKMIviLGA3jqeE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=IqmzNKke; arc=none smtp.client-ip=209.85.216.52 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.b="IqmzNKke" Received: by mail-pj1-f52.google.com with SMTP id 98e67ed59e1d1-2c210a8d4f8so827123a91.0 for ; Sun, 02 Jun 2024 18:28:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1717378091; x=1717982891; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:to :from:from:to:cc:subject:date:message-id:reply-to; bh=ABNibF/jy35x5qufZvG/CN8NbHqxNsF8zjiL53ElLjY=; b=IqmzNKkefoPaLTvPEhy40/Ts4Ev64GgdG6JtRC/9avKx8QZ9mwJMyQqTepiSCFRg42 sWYpfsz81E8zluRYw9NMe/CC0maNGIR5SnQHhu/aMET5Tgod2/O8gkdtXEo+BSSB1gLe hx92GmHjpPPhQcemzU9iV+JBed/gkQt027Nq7jkjFqaWNRXn6sQcjidftGc5AMf0xqtQ RIUrO37YG66aHxnxetRYwwg4CTkHQA2GyNLHC/tXSzPPrN4cQ1RiBGvo4wsTMf/adJbK wvAl5XQ0ynXIKKJntLJvlUTmU3yfIhH88Al2uIRfQtPb22Vg5RqQUIkvNPuklKxrFVcw 4p7Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1717378091; x=1717982891; h=content-transfer-encoding:mime-version:message-id:date:subject:to :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=ABNibF/jy35x5qufZvG/CN8NbHqxNsF8zjiL53ElLjY=; b=NilxE+bobfBek6VuHbnsADeV0HwQs+1AHsn/eNzdf6Ns13cOBMM4XxdlS564txtOPY haKNcGO1ptK/3lV4TKwy0mXTgmmdvIcx1QnpD76tBC+zaXJzfwaHGaCXz3xm4dUJKnbX dJICNuGIsndVQojtYqze9BtlpnwUD08H3g3iBQ8wf7ztd3SJ3GqUHnm/QIvM/G+2Me0/ NipoyEdWIagMXlyzpU+TRuMnf+SZ2awhUPKmUE+Vf0YYm1UApY3jG8kMKSEN1HHhRkQp 9CheBCftYWoiwYj4QZcwfTT/hx3GCS0oqwin1SJ10/3XvzJQdbLg94YKw9j6VMmc7sPe nfVQ== X-Forwarded-Encrypted: i=1; AJvYcCUKXSTlPgX6DI/Bc004D616CadolumFazwLOML7NlJOpXpLvChdxn62yOkZ31O6bt7/iCqACrIC33+5xE2dNGSQBoxZ4a6rzyT1LEtf X-Gm-Message-State: AOJu0YyCBmOOLI1PIw/k0vpKEeXF67KE6u7JbmrYca5f6A0rFGIsEL56 WhotTkAxDTnlKHZ1Vr0tb+oUKbO8LgfjhKVH8frReu4x4GtOJVGw X-Google-Smtp-Source: AGHT+IHGeCYX92ClMfFrJLS+4UWb8SolcJZOuWfBr8j+JQ43m69uhAdI1fMni61JJuulHTm+zgEZaA== X-Received: by 2002:a17:90a:d304:b0:2bd:6552:6474 with SMTP id 98e67ed59e1d1-2c1dc5cd763mr6548807a91.41.1717378091176; Sun, 02 Jun 2024 18:28:11 -0700 (PDT) Received: from desky.home.arpa ([2605:59c8:790:a500:5d50:7307:99f3:76c8]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2c1a77bb855sm6725047a91.52.2024.06.02.18.28.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 02 Jun 2024 18:28:10 -0700 (PDT) From: Benjamin Schneider X-Google-Original-From: Benjamin Schneider To: Andrew Lunn , Gregory Clement , Sebastian Hesselbarth , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] cpufreq: enable 1200Mhz clock speed for armada-37xx Date: Sun, 2 Jun 2024 18:26:37 -0700 Message-ID: <20240603012804.122215-1-ben@bens.haus> X-Mailer: git-send-email 2.45.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi, I've been running two Marvell A3720 devices with CPU frequency scaling enabled and 1.2Ghz enabled for several months without issues. In order to do this I had to patch the DDR initialization code in Marvell's repos (https://github.com/MarvellEmbeddedProcessors/mv-ddr-marvell/pull/44). Without that patch, the device would indeed crash with frequency scaling enabled at any clock speed. This indicates that at least some of the stability issues experienced by users in the past are a result of improperly configured bootloaders rather than an issue with the kernel. As a result, it seems reasonable to re-enable the 1.2Ghz clock speed for users. Ben