From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Herring Subject: Re: [PATCH v2 01/23] devicetree: bindings: hisi_sas: add v2 HW bindings Date: Mon, 25 Jan 2016 13:31:14 -0600 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 Return-path: Content-Disposition: inline In-Reply-To: <1453742532-53092-2-git-send-email-john.garry-hv44wF8Li93QT0dZR+AlfA@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: j00310691 Cc: JBottomley-wo1vFcy6AUs@public.gmane.org, martin.petersen-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org, pawel.moll-5wv7dgnIgG8@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org, galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org, linuxarm-hv44wF8Li93QT0dZR+AlfA@public.gmane.org, zhangfei.gao-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, xuwei5-C8/M+/jPZTeaMJb+Lgu22Q@public.gmane.org, john.garry2-s/0ZXS5h9803lw97EnAbAg@public.gmane.org, linux-scsi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, arnd-r2nGTMty4D4@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: devicetree@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 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html