From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752570AbdHPVD7 (ORCPT ); Wed, 16 Aug 2017 17:03:59 -0400 Received: from mail-pg0-f51.google.com ([74.125.83.51]:34772 "EHLO mail-pg0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752263AbdHPVD5 (ORCPT ); Wed, 16 Aug 2017 17:03:57 -0400 MIME-Version: 1.0 In-Reply-To: <20170801150108.GC1450@katana> References: <1501518290-5723-1-git-send-email-boris.brezillon@free-electrons.com> <1501518290-5723-3-git-send-email-boris.brezillon@free-electrons.com> <20170731231509.77d1fba4@bbrezillon> <20170801142936.5df48702@bbrezillon> <20170801153414.6ce34ee8@bbrezillon> <20170801141218.GA1450@katana> <20170801164826.423183ff@bbrezillon> <20170801150108.GC1450@katana> From: Geert Uytterhoeven Date: Wed, 16 Aug 2017 23:03:55 +0200 X-Google-Sender-Auth: j100lUu1sTpeEJFF9GCEgjZXoLY Message-ID: Subject: Re: [RFC 2/5] i3c: Add core I3C infrastructure To: Wolfram Sang Cc: Boris Brezillon , Arnd Bergmann , Linux I2C , Jonathan Corbet , "linux-doc@vger.kernel.org" , Greg Kroah-Hartman , Przemyslaw Sroka , Arkadiusz Golec , Alan Douglas , Bartosz Folta , Damian Kos , Alicja Jurasik-Urbaniak , Jan Kotas , Cyprian Wronka , Alexandre Belloni , Thomas Petazzoni , Nishanth Menon , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , "devicetree@vger.kernel.org" , Linux Kernel Mailing List Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 1, 2017 at 5:01 PM, Wolfram Sang wrote: >> I'm perfectly fine with the I3C / I2C framework separation. The only >> minor problem I had with that was the inaccuracy of the >> sysfs/device-model representation: we don't have one i2c and one i3c >> bus, we just have one i3c bus with a mix of i2c and i3c devices. > > I understand that. What if I2C had the same seperation between the "bus" > and the "master"? There can be multiple masters on an i2c bus. But not on an i3c bus, due to SCL being push/pull. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds From mboxrd@z Thu Jan 1 00:00:00 1970 From: Geert Uytterhoeven Subject: Re: [RFC 2/5] i3c: Add core I3C infrastructure Date: Wed, 16 Aug 2017 23:03:55 +0200 Message-ID: References: <1501518290-5723-1-git-send-email-boris.brezillon@free-electrons.com> <1501518290-5723-3-git-send-email-boris.brezillon@free-electrons.com> <20170731231509.77d1fba4@bbrezillon> <20170801142936.5df48702@bbrezillon> <20170801153414.6ce34ee8@bbrezillon> <20170801141218.GA1450@katana> <20170801164826.423183ff@bbrezillon> <20170801150108.GC1450@katana> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Return-path: In-Reply-To: <20170801150108.GC1450@katana> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Wolfram Sang Cc: Boris Brezillon , Arnd Bergmann , Linux I2C , Jonathan Corbet , "linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , Greg Kroah-Hartman , Przemyslaw Sroka , Arkadiusz Golec , Alan Douglas , Bartosz Folta , Damian Kos , Alicja Jurasik-Urbaniak , Jan Kotas , Cyprian Wronka , Alexandre Belloni , Thomas Petazzoni , Nishanth Menon , Rob Herring , Pawel Moll List-Id: devicetree@vger.kernel.org On Tue, Aug 1, 2017 at 5:01 PM, Wolfram Sang wrote: >> I'm perfectly fine with the I3C / I2C framework separation. The only >> minor problem I had with that was the inaccuracy of the >> sysfs/device-model representation: we don't have one i2c and one i3c >> bus, we just have one i3c bus with a mix of i2c and i3c devices. > > I understand that. What if I2C had the same seperation between the "bus" > and the "master"? There can be multiple masters on an i2c bus. But not on an i3c bus, due to SCL being push/pull. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert-Td1EMuHUCqxL1ZNQvxDV9g@public.gmane.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html