From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: SATA port multiplier(Marvell 6121 with ahci) and Marvell 4140, simg 3726 Date: Thu, 31 Jul 2008 19:00:50 +0900 Message-ID: <48918D52.3010404@gmail.com> References: <788014650807302022j30cea641wcfe4105ac8702b8c@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: Received: from rv-out-0506.google.com ([209.85.198.229]:9875 "EHLO rv-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752979AbYGaKBa (ORCPT ); Thu, 31 Jul 2008 06:01:30 -0400 Received: by rv-out-0506.google.com with SMTP id k40so475891rvb.1 for ; Thu, 31 Jul 2008 03:01:30 -0700 (PDT) In-Reply-To: <788014650807302022j30cea641wcfe4105ac8702b8c@mail.gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: khchen@synology.com Cc: linux-ide@vger.kernel.org KueiHuan Chen wrote: > Hello, > > We got some problem while evaluation port multipiler with libata, we > had tested with two sata chip, one is sil-3132, the another is Marvell > 6121. And we also have two port multiplie: Marvell 4140 and Sil-3726. > Our kernel version is kernel-2.6.24 with Marvell 5281 platform. > > Testing result: > > Sil 3132 with 3726 and 4140: everything looks like fine. > > Marvell 6121 with 3726 and 4140(using ahci.c): both port multipiler > would got problem. It can't be detected whether hotplug or at boot time. > But the disk detection is fine without port multiplier. > > Because we can't upgrade kernel to latest version so quickly, is there > any hint or solution for us ? mv PMP support was added very recently. 2.6.26 has it. -- tejun