From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8DB88C77B60 for ; Sat, 29 Apr 2023 16:06:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229844AbjD2QGj (ORCPT ); Sat, 29 Apr 2023 12:06:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53176 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229441AbjD2QGi (ORCPT ); Sat, 29 Apr 2023 12:06:38 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B4D4919B4 for ; Sat, 29 Apr 2023 09:06:37 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 2A66921D66; Sat, 29 Apr 2023 16:06:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1682784396; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=pEfq0VVD4xfZaz1e85/GzHvMOLkZI0PJ2efY8nMUg40=; b=JXvfPKsm5oFEkU6gSU09bpj0/FdulwK47FiyuKTnD5B3JQ15rdqWIO899At5oQDtRyKNvR 6FQNnDOAlbnuUPfnETESvRIjphb4RDf2JJBwJdd/XSC1rt8e0DffbcUxwIGms6cxtr4BUL 4FQORITdOTfz+nJVPIMygc52wFVYGU4= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1682784396; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=pEfq0VVD4xfZaz1e85/GzHvMOLkZI0PJ2efY8nMUg40=; b=9P7qcwXg0/p9h+mWYW+iB9Xyf1lVE0j/SrPYk99T5CHqG5lm9eG/qWHPFd+43KIluT/Cmw ATq8mF8vATdK0kAQ== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 0286A13587; Sat, 29 Apr 2023 16:06:35 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id sG16OotATWSDGgAAMHmgww (envelope-from ); Sat, 29 Apr 2023 16:06:35 +0000 Date: Sat, 29 Apr 2023 18:06:34 +0200 From: Jean Delvare To: =?UTF-8?B?SmVhbi1GcmFuw6dvaXM=?= Roy Cc: Wolfram Sang , linux-i2c@vger.kernel.org Subject: Re: [ee1004] Failed to select page 0 - G.Skill Trident Z5 NEO DDR5, ASUS X670E board - 6.2.11-arch1-1 Message-ID: <20230429180634.7f94b29e@endymion.delvare> In-Reply-To: <20230429171522.05c671f8@endymion.delvare> References: <20230429171522.05c671f8@endymion.delvare> Organization: SUSE Linux X-Mailer: Claws Mail 4.0.0 (GTK+ 3.24.34; x86_64-suse-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org On Sat, 29 Apr 2023 17:15:22 +0200, Jean Delvare wrote: > I took a quick look on jedec.org in search for information and found > JESD400-5A which covers SPD contents for DDR5 and it enumerates 1024 > bytes. This is twice as much as what EE1004 EEPROMs can hold, so DDR5 > modules are definitely not using EE1004 EEPROMs. So far I couldn't find > the "equivalent" of EE1004 for DDR5 modules so far. Found it, it is named "SPD5118 Hub and Serial Presence Detect Device Standard" and is published by Jedec under reference JESD300-5B. That's a 126-page document. In comparison, the EE1004 specification was 35-page long. So I expect there will be a lot of work to get it to work. And I don't own a DDR5-based system yet, so I can't even test. -- Jean Delvare SUSE L3 Support