From: javier Martin Subject: Re: [PATCH 0/3] crypto: sahara: Add support for SAHARA in i.MX27. Date: Thu, 21 Feb 2013 15:57:31 +0100 Message-ID: References: <1361449162-27302-1-git-send-email-javier.martin@vista-silicon.com> <201302211259.26763.arnd@arndb.de> <201302211440.59577.arnd@arndb.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Cc: kernel@pengutronix.de, herbert@gondor.apana.org.au, davem@davemloft.net, tony@atomide.com, swarren@nvidia.com, shawn.guo@linaro.org, gcembed@gmail.com, linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org To: Arnd Bergmann Return-path: Received: from mail-wg0-f44.google.com ([74.125.82.44]:60740 "EHLO mail-wg0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753862Ab3BUO5e (ORCPT ); Thu, 21 Feb 2013 09:57:34 -0500 Received: by mail-wg0-f44.google.com with SMTP id dr12so7481687wgb.35 for ; Thu, 21 Feb 2013 06:57:33 -0800 (PST) In-Reply-To: <201302211440.59577.arnd@arndb.de> Sender: linux-crypto-owner@vger.kernel.org List-ID: On 21 February 2013 15:40, Arnd Bergmann wrote: > On Thursday 21 February 2013, javier Martin wrote: >> We know about the existence of DT and the constant migration process >> that is taking place towards it. >> >> Moreover we are strongly interested in converting the Visstrim SM10 >> platform to DT. Unfortunately, there are several issues that need to >> be solved so that Visstrim M10 can be fully converted to DT: >> - full SoC camera DT support >> - DT support for ov7670 >> - pinctrl support for i.MX27 > > Ok, I see. Full device tree support is certainly asking too much then. > >> Furthermore, we have limited resources at the moment and we have to >> decide priorities. But having an hybrid platform-DT support is our >> next task for Visstrim M10. > > Ok, cool. > >> However, I understand your concern about new drivers having DT >> support. Maybe a good approach could be that I added compile-tested >> only DT support for this driver and remove platform support for >> mainline submission (although we maintain it internally in our >> repositories). >> >> What do you think? > > Sounds good. Since it sounds like the hardware is available in all > imx27 device, maybe someone else can test your driver on an imx27 > board that already has partial DT support when you add it to > arch/arm/boot/dts/imx27.dtsi? Yes, since the module is integrated in i.MX27 that seems the way to go. > Is there any reason why an imx27 based board would not support this > driver? Are there any other chips that could use it, e.g. imx25 or > imx6? No, there's no reason for an i.mx27 board not to support this driver since the module doesn't have any external interfaces. I think other i.MX chips have similar devices but I am not sure to what extent they are compatible or not. Probably Sascha Hauer or Shawn Guo (already in CC) could tell better than me since they have a wider view on the i.MX range. Regards. -- Javier Martin Vista Silicon S.L. CDTUC - FASE C - Oficina S-345 Avda de los Castros s/n 39005- Santander. Cantabria. Spain +34 942 25 32 60 www.vista-silicon.com