Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933741AbcLBL2p (ORCPT ); Fri, 2 Dec 2016 06:28:45 -0500 Received: from mail-lf0-f52.google.com ([209.85.215.52]:32910 "EHLO mail-lf0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933345AbcLBL2m (ORCPT ); Fri, 2 Dec 2016 06:28:42 -0500 Date: Fri, 2 Dec 2016 13:28:33 +0200 From: Ivan Khoronzhuk To: Grygorii Strashko Cc: "David S. Miller" , netdev@vger.kernel.org, Mugunthan V N , Sekhar Nori , linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org Subject: Re: [PATCH 5/7] Documentation: DT: net: cpsw: allow to specify descriptors pool size Message-ID: <20161202112832.GB1213@khorivan> References: <20161201233432.6182-1-grygorii.strashko@ti.com> <20161201233432.6182-6-grygorii.strashko@ti.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20161201233432.6182-6-grygorii.strashko@ti.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1451 Lines: 34 On Thu, Dec 01, 2016 at 05:34:30PM -0600, Grygorii Strashko wrote: > Add optional property "descs_pool_size" to specify buffer descriptor's > pool size. The "descs_pool_size" should define total number of CPDMA > CPPI descriptors to be used for both ingress/egress packets > processing. If not specified - the default value 256 will be used > which will allow to place descriptor's pool into the internal CPPI > RAM on most of TI SoC. > > Signed-off-by: Grygorii Strashko > --- > Documentation/devicetree/bindings/net/cpsw.txt | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/Documentation/devicetree/bindings/net/cpsw.txt b/Documentation/devicetree/bindings/net/cpsw.txt > index 5ad439f..b99d196 100644 > --- a/Documentation/devicetree/bindings/net/cpsw.txt > +++ b/Documentation/devicetree/bindings/net/cpsw.txt > @@ -35,6 +35,11 @@ Optional properties: > For example in dra72x-evm, pcf gpio has to be > driven low so that cpsw slave 0 and phy data > lines are connected via mux. > +- descs_pool_size : total number of CPDMA CPPI descriptors to be used for > + both ingress/egress packets processing. if not > + specified the default value 256 will be used which > + will allow to place descriptors pool into the > + internal CPPI RAM. Does it describe h/w? Why now module parameter? or even smth like ethtool num ring entries? > > Slave Properties: > -- > 2.10.1 >