linux-kernel - Re: [PATCH v2 01/23] devicetree: bindings: hisi

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Date:	Mon, 25 Jan 2016 13:31:14 -0600
From:	Rob Herring <robh@...nel.org>
To:	j00310691 <john.garry@...wei.com>
Cc:	JBottomley@...n.com, martin.petersen@...cle.com,
	pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	linuxarm@...wei.com, zhangfei.gao@...aro.org, xuwei5@...ilicon.com,
	john.garry2@...l.dcu.ie, linux-scsi@...r.kernel.org,
	linux-kernel@...r.kernel.org, arnd@...db.de,
	devicetree@...r.kernel.org
Subject: Re: [PATCH v2 01/23] devicetree: bindings: hisi_sas: add v2 HW
 bindings

On Tue, Jan 26, 2016 at 01:21:50AM +0800, j00310691 wrote:
> From: John Garry <john.garry@...wei.com>
> 
> 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 <john.garry@...wei.com>
> ---
>  .../devicetree/bindings/scsi/hisilicon-sas.txt      | 21 ++++++++++++++++++++-
>  1 file changed, 20 insertions(+), 1 deletion(-)

Acked-by: Rob Herring <robh@...nel.org>