Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752141AbdFMFkG (ORCPT ); Tue, 13 Jun 2017 01:40:06 -0400 Received: from imap.netup.ru ([77.72.80.14]:33522 "EHLO imap.netup.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751955AbdFMFkE (ORCPT ); Tue, 13 Jun 2017 01:40:04 -0400 X-DKIM: OpenDKIM Filter v2.6.8 imap.netup.ru 608AD8B8B83 MIME-Version: 1.0 In-Reply-To: <6586e809-417f-bb4b-5ca5-e38b9641894b@sony.com> References: <20170414015043.16731-1-Yasunari.Takiguchi@sony.com> <5188b958-9a34-4519-5845-a318273592e0@sony.com> <0e192530-9b56-e8fb-6210-ab619ddde1de@sony.com> <6586e809-417f-bb4b-5ca5-e38b9641894b@sony.com> From: Abylay Ospan Date: Tue, 13 Jun 2017 01:39:39 -0400 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH v2 0/15] [dt-bindings] [media] Add document file and driver for Sony CXD2880 DVB-T2/T tuner + demodulator To: "Takiguchi, Yasunari" Cc: "akpm@linux-foundation.org" , "linux-kernel@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-media@vger.kernel.org" , Mauro Carvalho Chehab , "tbird20d@gmail.com" , "frowand.list@gmail.com" , "Yamamoto, Masayuki" , "Nozawa, Hideki (STWN)" , "Yonezawa, Kota" , "Matsumoto, Toshihiko" , "Watanabe, Satoshi (SSS)" Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1303 Lines: 46 Dear Takiguchi, Roger that. Thanks for explanation ! 2017-06-13 1:35 GMT-04:00 Takiguchi, Yasunari : > Dear Abylay Ospan > > Thank you for your review and proposal. > > Unfortunately, we supposed it's difficult to cover CXD2841 functionality by CXD2880 driver. > CXD2880 is for mobile IC, tuner (RF) and demodulator convined IC. > On the other hand, CXD2841 is demodulator only IC for stationary use. > CXD2841 supports terrestrial, cable and satellite broadcasting systems. > But CXD2880 supports terrestrial broadcasting systems only. > And as you suggested, the driver supports SPI interface only. > > Regards & Thanks a lot > Takiguchi > > > On 2017/06/12 22:33, Abylay Ospan wrote: >> Dear Takiguchi, >> >> I'm working on 'drivers/media/dvb-frontends/cxd2841er.c' (universal >> demod) and 'linux/drivers/media/dvb-frontends/helene.c' (universal >> TERR/CABLE/SAT tuner). >> >> How do you think - is your cxd2880 proposed driver have possibilities >> to cover cxd2841er demod functionality too ? >> >> I have quickly checked your cxd2880_top.c and looks like cxd2880 works >> over SPI (not I2C) ?Also, looks like registers map, sequences >> is different. Am I right ? >> >> How do you think ? >> >> Thanks a lot ! > -- Abylay Ospan, NetUP Inc. http://www.netup.tv