From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932957AbcAYTbW (ORCPT ); Mon, 25 Jan 2016 14:31:22 -0500 Received: from mail.kernel.org ([198.145.29.136]:38169 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932246AbcAYTbT (ORCPT ); Mon, 25 Jan 2016 14:31:19 -0500 Date: Mon, 25 Jan 2016 13:31:14 -0600 From: Rob Herring To: j00310691 Cc: JBottomley@odin.com, martin.petersen@oracle.com, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, linuxarm@huawei.com, zhangfei.gao@linaro.org, xuwei5@hisilicon.com, john.garry2@mail.dcu.ie, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, arnd@arndb.de, devicetree@vger.kernel.org Subject: Re: [PATCH v2 01/23] devicetree: bindings: hisi_sas: add v2 HW bindings Message-ID: <20160125193114.GA16531@rob-hp-laptop> References: <1453742532-53092-1-git-send-email-john.garry@huawei.com> <1453742532-53092-2-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1453742532-53092-2-git-send-email-john.garry@huawei.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jan 26, 2016 at 01:21:50AM +0800, j00310691 wrote: > From: John Garry > > Add the dt bindings for HiSi SAS controller v2 HW. > > The main difference in the controller from dt perspective > is interrupts. The v2 controller does not have dedicated > fatal and broadcast interrupts - they are multiplexed on > the channel interrupt. > > Each SAS v2 controller can issue upto 64 commands > (or connection requests) on the system bus without waiting > for a response - this is know as am-max-transmissions. > In hip06, sas controller #1 has a limitation that it has to > limit am-max-transmissions to 32 - this limitation is due > to chip system bus design. It is not anticipated that any > future chip incorporating v2 controller will have such a > limitation. > > Signed-off-by: John Garry > --- > .../devicetree/bindings/scsi/hisilicon-sas.txt | 21 ++++++++++++++++++++- > 1 file changed, 20 insertions(+), 1 deletion(-) Acked-by: Rob Herring