linux-kernel - Re: [PATCH v2 0/15] [dt-bindings] [media] Add document file and driver for Sony CXD2880 DVB-T2/T tuner + demodulator

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Date:   Tue, 13 Jun 2017 01:39:39 -0400
From:   Abylay Ospan <aospan@...up.ru>
To:     "Takiguchi, Yasunari" <Yasunari.Takiguchi@...y.com>
Cc:     "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
        Mauro Carvalho Chehab <mchehab@...pensource.com>,
        "tbird20d@...il.com" <tbird20d@...il.com>,
        "frowand.list@...il.com" <frowand.list@...il.com>,
        "Yamamoto, Masayuki" <Masayuki.Yamamoto@...y.com>,
        "Nozawa, Hideki (STWN)" <Hideki.Nozawa@...y.com>,
        "Yonezawa, Kota" <Kota.Yonezawa@...y.com>,
        "Matsumoto, Toshihiko" <Toshihiko.Matsumoto@...y.com>,
        "Watanabe, Satoshi (SSS)" <Satoshi.C.Watanabe@...y.com>
Subject: Re: [PATCH v2 0/15] [dt-bindings] [media] Add document file and
 driver for Sony CXD2880 DVB-T2/T tuner + demodulator

Dear Takiguchi,

Roger that.
Thanks for explanation !

2017-06-13 1:35 GMT-04:00 Takiguchi, Yasunari <Yasunari.Takiguchi@...y.com>:
> 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