From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alex Courbot Date: Thu, 13 Sep 2012 07:08:50 +0000 Subject: Re: [PATCH v6 1/4] Runtime Interpreted Power Sequences Message-Id: <3082244.Oec3ulPCgi@percival> List-Id: References: <1347443867-18868-1-git-send-email-acourbot@nvidia.com> <2689722.93BQTh4lSC@percival> <1347519249.7471.42.camel@lappyti> In-Reply-To: <1347519249.7471.42.camel@lappyti> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Tomi Valkeinen Cc: Stephen Warren , Thierry Reding , Simon Glass , Grant Likely , Rob Herring , Mark Brown , Anton Vorontsov , David Woodhouse , Arnd Bergmann , Leela Krishna Amudala , "linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-fbdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org" , "linux-pm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" On Thursday 13 September 2012 14:54:09 Tomi Valkeinen wrote: > * PGP Signed by an unknown key > > On Thu, 2012-09-13 at 15:36 +0900, Alex Courbot wrote: > > > On Thursday 13 September 2012 14:22:57 Tomi Valkeinen wrote: > > > > > > > > > However, I fear these board specific things may be quite a bit > > > anything, > > > so it may well be pwm, gpios and regulators are not enough for them. > > > For > > > example, there could be an FPGA on the board which requires some > > > configuration to accomplish the task at hand. It could be rather > > > difficult to handle it with a generic power sequence. > > > > > > Right. Note that this framework is supposed to be extended - I would like > > to at least add regulator voltage setting, and maybe even support for > > clocks and pinmux (but that might be out of place). > > > Yes, that's one concern of mine... I already can imagine someone > suggesting adding conditionals to the power sequence data. I took care of that when naming the feature - it is not a "sequence" anymore if you have conditionals. :P > Perhaps also > direct memory read/writes so you can twiddle registers directly. And so > on. Where's the limit what it should contain? Can we soon write full > drivers with the DT data? =) I shall be satisfied the day the kernel is released as one big DT node along with the 5KB interpreter that runs it. Alex.