From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757998AbdJMJKy (ORCPT ); Fri, 13 Oct 2017 05:10:54 -0400 Received: from mail-cys01nam02on0138.outbound.protection.outlook.com ([104.47.37.138]:40032 "EHLO NAM02-CY1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751937AbdJMJKu (ORCPT ); Fri, 13 Oct 2017 05:10:50 -0400 Authentication-Results: spf=pass (sender IP is 117.103.190.42) smtp.mailfrom=sony.com; gmail.com; dkim=none (message not signed) header.d=none;gmail.com; dmarc=bestguesspass action=none header.from=sony.com; Subject: Re: [PATCH v4 02/12] [media] cxd2880-spi: Add support for CXD2880 SPI interface To: =?UTF-8?Q?Honza_Petrou=c5=a1?= References: <20171013054635.20946-1-Yasunari.Takiguchi@sony.com> <20171013055928.21132-1-Yasunari.Takiguchi@sony.com> CC: "linux-kernel@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-media@vger.kernel.org" , "tbird20d@gmail.com" , "frowand.list@gmail.com" , "Yamamoto, Masayuki" , "Nozawa, Hideki (STWN)" , "Yonezawa, Kota" , "Matsumoto, Toshihiko" , "Watanabe, Satoshi (SSS)" , From: "Takiguchi, Yasunari" Message-ID: Date: Fri, 13 Oct 2017 18:10:31 +0900 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Originating-IP: [2001:cf8:1:aa2:0:dddd:320e:c313] X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-Forefront-Antispam-Report: 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Oct 2017 09:10:47.5732 (UTC) X-MS-Exchange-CrossTenant-Id: 66c65d8a-9158-4521-a2d8-664963db48e4 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=66c65d8a-9158-4521-a2d8-664963db48e4;Ip=[117.103.190.42];Helo=[jp.sony.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN1PR13MB0461 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Honza > If I understand it right, it uses SPI bus also for passing transport stream > to the host system (also having some pid piltering inside!), isn't it? > It would be interesting to know what is the max throughput of the CXD's SPI? Yes, max clock rate of spi is written in sony-cxd2880.txt of [patch v4 01/12]. spi-max-frequency = <55000000>; /* 55MHz */ Takiguchi