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 X-Spam-Level: X-Spam-Status: No, score=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 941C3C04AA7 for ; Mon, 13 May 2019 23:47:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 628CA20850 for ; Mon, 13 May 2019 23:47:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="DwSN2JIq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726663AbfEMXrr (ORCPT ); Mon, 13 May 2019 19:47:47 -0400 Received: from mail-yw1-f49.google.com ([209.85.161.49]:38821 "EHLO mail-yw1-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726541AbfEMXrq (ORCPT ); Mon, 13 May 2019 19:47:46 -0400 Received: by mail-yw1-f49.google.com with SMTP id b74so12473677ywe.5 for ; Mon, 13 May 2019 16:47:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=T2JoHeLpcgYT5WmRwz07PSeUGVLQDuFfdMgk5QS9pGg=; b=DwSN2JIq55N/xBX8LUz1OoPomoF2YiA1zBcdXvDtY5K37bBp6zYHIGUnGbjDnIWfzP L4UD5L2pI2p+X1GD/F0XQTt+FpnG+HoXt9sR/OQwVm+b5h/ZId6QQVrqCUWPUvQ2IIQO RfnF7fcaRT/pEzx6CEltITkbzkCUp8oC//wr0pAgQlu/+acZH/nLf5X8ZMlyaVQS8WXj BmeFowKTdakAZxyKBHdQtshzm0bTxvaeEaKi+Y0Zg+HC3ZXqsECN4rpDXRDg2/ju6EcU CTUyJxK8hX60kbIKUWrMZl2uTcu5VOUscfaCDLhDWQQUEDxr3GMkiqxk2hc3N1TOKIwF 9U0A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=T2JoHeLpcgYT5WmRwz07PSeUGVLQDuFfdMgk5QS9pGg=; b=jVJwkJch6WAQk/XMqwBLPzqVGPCoj+R4bU+ji9mH8LvR+UN3qnnpLmWZdKAt9cp+C1 VKOFVf6Kks1K8YmBYITqbwijgkxirklECZ1gopNlAgt7sVLKsP/LHLlhNO2GJRQ0m3LC AFVyB2WlG5wvIhP75klPNDrcQ6khCSZDY/kOP0cxh3vEq2VNZ8l7LkjQl2F81PD2oD/h LOms6FvYxij1p3rKSmdBIFqoeS2bZ9Erl8J9rKqBF6ovZHWnHKiWRxyr9bKzPo8bwGCw NFITK2/k4q5D0umC6ALLyR6+smVutHZC4/cC1NOR7bEB18yCq7RqF8GrNLFgCMqpD/sg hSDg== X-Gm-Message-State: APjAAAVAhyQ2glPrb3u1DHc+K3Ih8ClAFDS6h0hII8aeMG/2WlTKK36b haJsGHY+7lX6HfOlR88bv7m1zL9CH2toz09PVAE= X-Google-Smtp-Source: APXvYqzeRxmNJKPtm5us1SeXYq/30gsVW1zV5FmQySFcPLKjerLOyUtnktaepsrdOPPf9wWypu5guMCDDHlqVp2m88U= X-Received: by 2002:a25:84c5:: with SMTP id x5mr14963102ybm.85.1557791266067; Mon, 13 May 2019 16:47:46 -0700 (PDT) MIME-Version: 1.0 References: <20190502074519.61272b42@canb.auug.org.au> <66bf0e79-16a4-a411-19ba-cd7d5a232976@bell.net> In-Reply-To: From: Carlo Pisani Date: Tue, 14 May 2019 01:47:16 +0200 Message-ID: Subject: Re: C3600, sata controller To: John David Anglin Cc: Parisc List Content-Type: text/plain; charset="UTF-8" Sender: linux-parisc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org > > The issue is probably the signaling voltage and clock rate capability. well, I have just checked again, the Italian Wikipedia and the English Wikipedia do not report the same things about the PCI_X X___X in short, the Italian Wikipedia says PCI64 = PCI_X, just PCI64 is clocked slower while the English Wikipedia says PCI64 != PCI_X, but it doesn't explain why And the https://www.openpa.net/bus.html#pci doc is even more confusing in the table about the PCI buses used in PA-RISC computers overview: why things are named differently?!? What makes me perplex is: the PCI-X is physically a 3.3 V PCI slot with/out a voltage level shifter. So levels should be compatible, but so what is the difference between 64-bit PCI slot and PCI-X slot? In my head, there shouldn't be any significant physical differences between the slots. The newer PCI cards - 3.3V will fit and work in a PCI-X slot, and PCI-X cards will fit in an older PCI slot as long as the voltage - 3.3V - matches, and they should do! Now, I am even more perplex: need to check the PCI-64 and PCI-X specs, and compare them.