From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 34A7BC48BDE for ; Sun, 7 Jul 2019 21:09:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0AA4E206A2 for ; Sun, 7 Jul 2019 21:09:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727524AbfGGVJ2 (ORCPT ); Sun, 7 Jul 2019 17:09:28 -0400 Received: from antares.kleine-koenig.org ([94.130.110.236]:38734 "EHLO antares.kleine-koenig.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727073AbfGGVJ1 (ORCPT ); Sun, 7 Jul 2019 17:09:27 -0400 X-Greylist: delayed 588 seconds by postgrey-1.27 at vger.kernel.org; Sun, 07 Jul 2019 17:09:25 EDT Received: by antares.kleine-koenig.org (Postfix, from userid 1000) id 88340713FC4; Sun, 7 Jul 2019 23:02:40 +0200 (CEST) Subject: Re: [PATCH 1/3] si2157: get chip id during probing From: =?UTF-8?Q?Uwe_Kleine-K=c3=b6nig?= To: Antti Palosaari , Mauro Carvalho Chehab Cc: linux-media@vger.kernel.org, Andreas Kemnade References: <20190707205846.22964-1-uwe@kleine-koenig.org> Openpgp: preference=signencrypt Autocrypt: addr=uwe@kleine-koenig.org; prefer-encrypt=mutual; keydata= mQINBEwXmCYBEACoJSJcKIlkQcTYia0ymmMOBk2veFoy/a0LlqGUEjQ4WECBL19F2BYX1dSp 5/ZdfKuV605usI6oq4x6k/LKmqZDl6YnqW/YmN/iZVCRunBRfvpTlL4lcNUu5Va/4GBRzBRr rrIhCIVL5zMV6hKywhHKTdOHVSZRftf+eRSBwENKXahmfOMDmekyf585etDPdzkFrLHNVFOC sFOU0gCK0uVPyY0LH13eo4qEEMi88RCOfwYCFQqKXDdo41DWoDPB5OGCMaphIx9wC/nvtdcv MowsGde5iGgmHWK6sdC/O/xaV7fnz1sJzoJB1eT91LkGbdGxsLAT6nqlaNJiJtiBoRhscguV 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multipart/mixed; boundary="UDlp1rg41CXPEOK8hGfIuQtzoD8siUvNw"; protected-headers="v1" From: =?UTF-8?Q?Uwe_Kleine-K=c3=b6nig?= To: Antti Palosaari , Mauro Carvalho Chehab Message-ID: <3ff87deb-9125-4696-8aa0-141ea7d773b9@kleine-koenig.org> Subject: Re: [PATCH 1/3] si2157: get chip id during probing References: <20190707205846.22964-1-uwe@kleine-koenig.org> In-Reply-To: <20190707205846.22964-1-uwe@kleine-koenig.org> --UDlp1rg41CXPEOK8hGfIuQtzoD8siUvNw Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable Hello, On 7/7/19 10:58 PM, Uwe Kleine-K=C3=B6nig wrote: > From: Andreas Kemnade >=20 > If the si2157 is behind a e.g. si2168, the si2157 will > at least in some situations not be readable after the si268 > got the command 0101. It still accepts commands but the answer > is just ffffff. So read the chip id before that so the > information is not lost. >=20 > The following line in kernel output is a symptome > of that problem: > si2157 7-0063: unknown chip version Si21255-\xffffffff\xffffffff\xfffff= fff >=20 > Signed-off-by: Andreas Kemnade I sent this out by mistake. This patch is still needed here, but I intend to understand and maybe improve it first. Please ignore for now. Best regards Uwe --UDlp1rg41CXPEOK8hGfIuQtzoD8siUvNw-- --EikXwe9spix90559leJrx19KNatfYzdYE Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEEfnIqFpAYrP8+dKQLwfwUeK3K7AkFAl0iXZEACgkQwfwUeK3K 7Aky9gf/Qb0WBxXdlPYPVoQ/YnCjMPkHe9T9XSZ6PP2O2d1bYu5IISzM1LnLpOsN IdFCiHzYytBitVXQic9RGgXnkDyJMnGxyKWXdO/9qoLlfF+wiIDXaHUqwmcSTeP7 n7WGaZPApIgzcbQGpV42ZAremrKFvDnz37qiFRr3A9c5rjHJk5F8s5ANG42G29Bz WRsLwO/82DMq6S6LZQ8C6lA3ZCnCLxySl4FMvOynDp6mXrOuANvRKlCGUf0DNyh4 labzS8I8d2eZrchzjjk13/3raMs0hJ71N7dKPG8efn9Da8eCVJlNoTKoB5KqEG1K aZ+B4irpgWxaY5FnXoPXUK346rS8Bg== =kEGV -----END PGP SIGNATURE----- --EikXwe9spix90559leJrx19KNatfYzdYE--