From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx07-00178001.pphosted.com (mx08-00178001.pphosted.com [91.207.212.93]) (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 145B217BA6; Wed, 23 Jul 2025 07:33:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.207.212.93 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753256025; cv=none; b=VFWLZSmJVbQtrTYOSjHRwDcf5sYPyAIfGPSNlVPmVc2iKr5iukOgAI5EDNbpamEaa817aurS3octhbpwTP0suzFRX0KXtNoTLWnJvskesPirOu8T/8H5LVl5pSgABX8o4X1JkW3g2E+cFI6K7yP48aQLei403dSX31LZ6wJoQHU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753256025; c=relaxed/simple; bh=HYqDBmZ+DIG4v85gnV0KAQmC5ntc6zltb032y65ohnI=; h=Message-ID:Date:MIME-Version:Subject:To:CC:References:From: In-Reply-To:Content-Type; b=UpikBYHUBtDTWjmApQ/9g4MMggQBEdhHYVnO/USZzuFEf5k+dQ/FN3ooJaReJHN02T6G05Ptq9UbNkXAsVyDEPLTXijNj+ycMoFdUKAW02dFRL1ACc6NTGxQ9DmP7XMbKN9V5CABu/lBHjuZ8gIMLNAPh78WYbkzxUyY35CWo4U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=foss.st.com; spf=pass smtp.mailfrom=foss.st.com; dkim=pass (2048-bit key) header.d=foss.st.com header.i=@foss.st.com header.b=QE9mJsJW; arc=none smtp.client-ip=91.207.212.93 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=foss.st.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=foss.st.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=foss.st.com header.i=@foss.st.com header.b="QE9mJsJW" Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 56N7Wjxn025289; Wed, 23 Jul 2025 09:33:25 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=selector1; bh= OF2g8HL4znRWs7yyAJKVV9g93H6bltIAkBEQRriY5ak=; b=QE9mJsJW+BIaT3ge CfuDSWegwRTrkywKHn6W0YG93ypZfNqeS7e8ZayRMnzEGT7SYFbolmtM4E8MisWR aCwQ4JGQJpAMXkivdfGa/SE2XG0ni4nYyoTyPjA4ZmXcx7m86K+Vu5TCWrVbfL3n c1dx45BTqRtDAhn0fM6nLUDojXJodArYz66bwaY6LDEybVWhCXIKdej6Ib23lFr0 kKfIFH80LJLqFFuOjo/MUtpCcAn+R5JgJFa+FkfylcX6IxoqLlpC8Uys6X9f8Pav uP5j+u3SvKrYBbic8FwMTCXT5HsdGCJjpeGB75nfCM8arIn5f9H1gNpeJd5BYw2C PnDKcA== Received: from beta.dmz-ap.st.com (beta.dmz-ap.st.com [138.198.100.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 4800g8t6nr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 23 Jul 2025 09:33:25 +0200 (MEST) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-ap.st.com (STMicroelectronics) with ESMTP id 249E640046; Wed, 23 Jul 2025 09:32:06 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node2.st.com [10.75.129.70]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 14599768F12; Wed, 23 Jul 2025 09:30:48 +0200 (CEST) Received: from [10.48.86.185] (10.48.86.185) by SHFDAG1NODE2.st.com (10.75.129.70) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Wed, 23 Jul 2025 09:30:47 +0200 Message-ID: <3e59d670-ee96-4ff2-a6c6-99d8a030e16c@foss.st.com> Date: Wed, 23 Jul 2025 09:30:46 +0200 Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 06/19] dt-bindings: memory: introduce DDR4 To: Julius Werner CC: Will Deacon , Mark Rutland , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue , Philipp Zabel , Jonathan Corbet , Gatien Chevallier , Michael Turquette , Stephen Boyd , Gabriel Fernandez , Krzysztof Kozlowski , Le Goffic , , , , , , , References: <20250722-ddrperfm-upstream-v3-0-7b7a4f3dc8a0@foss.st.com> <20250722-ddrperfm-upstream-v3-6-7b7a4f3dc8a0@foss.st.com> Content-Language: en-US From: Clement LE GOFFIC In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-ClientProxiedBy: SHFCAS1NODE2.st.com (10.75.129.73) To SHFDAG1NODE2.st.com (10.75.129.70) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-07-23_01,2025-07-22_01,2025-03-28_01 Hi Julius, On 7/22/25 23:57, Julius Werner wrote: >> + - pattern: "^ddr4-[0-9a-f]{2},[0-9a-f]{4}$" > > This pattern doesn't really make sense when DDR4 doesn't have the same > manufacturer ID / revision ID format as LPDDR. You could either only > leave the fallback constant for now, or define a new auto-generated > format that matches what DDR4 SPD provides (which I believe, if I read > Wikipedia right, is a two byte manufacturer ID and then an up to 20 > character ASCII part number string -- so it could be > `^ddr4-[0-9a-f{2},[0-9A-Za-z]{1,20}$`). Oh ok I didn't catch that it should be from the SPD. I'll propose something. Best regards, Clément