From mboxrd@z Thu Jan 1 00:00:00 1970 From: Igor Plyatov Subject: Re: [PATCH] ATA: pata_at91.c bugfixes Date: Thu, 12 May 2011 16:03:40 +0400 Message-ID: <4DCBCC9C.2040209@gmail.com> References: <1303299877-12088-1-git-send-email-plyatov@gmail.com> <20110423093623.GA3410@localhost.localdomain> <4DB6684C.7050505@gmail.com> <20110427183819.GA2285@localhost.localdomain> <4DBA9E2F.3070100@gmail.com> <20110501211716.GA5217@localhost.localdomain> Reply-To: plyatov@gmail.com Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-bw0-f46.google.com ([209.85.214.46]:63618 "EHLO mail-bw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756549Ab1ELMDp (ORCPT ); Thu, 12 May 2011 08:03:45 -0400 Received: by bwz15 with SMTP id 15so1226657bwz.19 for ; Thu, 12 May 2011 05:03:43 -0700 (PDT) In-Reply-To: <20110501211716.GA5217@localhost.localdomain> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Stanislaw Gruszka Cc: linux-ide@vger.kernel.org Hello Stanislaw! Thank you for patience and detailed explanations! Sorry for long delays between answers, but I must work with another projects. > >>>> * The NCS signal is not the same as CS1, CS2 ATA signals! It used only to >>>> enable data bus transceiver U2. >>> Well, they are different signals but connected together. All of these are >>> controlled by NCS: CFCE1 (CS1), CFCE2 (CS2), CFRNW (DIR), CFCS0 (OE) >>> if SMC is configured in True IDE mode. >> I must repeat again - NCS ("CFCS1" from schematic) are completely >> different signal for different purpose, then A0, A1, A2, CS0, CS1. >> It used only to enable data bus transceiver U2. > So, how in your opinion CS0 and CS1 are controlled? IMO there > are delivered from CFCE1 and CFCE2, which itself are delivered > from NCS. Here is corresponding quote from atmel documentation > you cited above: > > "The CFCE1 and CFCE2 waveforms are identical to the corresponding NCSx waveform" This makes picture completely clean for me now. I will publish new version patch for pata_at91.c. Best regards! -- Igor Plyatov