From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Tue, 30 Jul 2013 17:42:31 +0100 From: Mark Rutland Subject: Re: [PATCH 4/5] sata, highbank: set tx_atten override bits Message-ID: <20130730164231.GH29859@e106331-lin.cambridge.arm.com> References: <1374851518-4802-1-git-send-email-mark.langsdorf@calxeda.com> <1374851518-4802-4-git-send-email-mark.langsdorf@calxeda.com> <20130726162231.GD3528@e106331-lin.cambridge.arm.com> <51F2C220.5040407@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <51F2C220.5040407@gmail.com> Content-Language: en-US To: Rob Herring Cc: Mark Langsdorf , "linux-kernel@vger.kernel.org" , "linux-ide@vger.kernel.org" , "tj@kernel.org" , "devicetree@vger.kernel.org" , Pawel Moll , "swarren@wwwdotorg.org" , "ian.campbell@citrix.com" List-ID: On Fri, Jul 26, 2013 at 07:38:24PM +0100, Rob Herring wrote: > On 07/26/2013 11:22 AM, Mark Rutland wrote: > > On Fri, Jul 26, 2013 at 04:11:57PM +0100, Mark Langsdorf wrote: > >> Some board designs do not drive the SATA transmit lines within the > >> specification. The ECME can provide override settings, on a per board > >> basis, to bring the transmit lines within spec. Read those settings > >> from the DTB and program them in. > > > > How variable is the use of this property going to be? Would it instead > > be possible to decide that this was necessary, and choose the > > appropriate values based on a compatible property? > > It is based on compliance testing of the particular board design. Basing > on a compatible property would not work in this case. Ok. Could you clarify the u8/cell usage in the binding and amend the example please? Cheers, Mark.