Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756756Ab1DHR3S (ORCPT ); Fri, 8 Apr 2011 13:29:18 -0400 Received: from mms3.broadcom.com ([216.31.210.19]:4799 "EHLO MMS3.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756022Ab1DHR3R convert rfc822-to-8bit (ORCPT ); Fri, 8 Apr 2011 13:29:17 -0400 X-Server-Uuid: B55A25B1-5D7D-41F8-BC53-C57E7AD3C201 To: =?utf-8?B?UmFmYcWCIE1pxYJlY2tp?= cc: "linux-wireless@vger.kernel.org" , "John W. Linville" , =?utf-8?Q?Michael_B=C3=BCsch?= , "Larry Finger" , "George Kashperko" , "b43-dev@lists.infradead.org" , "linux-arm-kernel@lists.infradead.org" , "Russell King" , "Arnd Bergmann" , linuxdriverproject , "linux-kernel@vger.kernel.org" Subject: Re: [RFC][PATCH] bcmai: introduce AI driver References: <1302033463-1846-1-git-send-email-zajec5@gmail.com> Date: Fri, 8 Apr 2011 19:28:57 +0200 MIME-Version: 1.0 From: "Arend van Spriel" Organization: Broadcom Message-ID: In-Reply-To: User-Agent: Opera Mail/11.01 (Linux) X-WSS-ID: 618199003I88241730-01-01 Content-Type: text/plain; charset=utf-8; format=flowed; delsp=yes Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2501 Lines: 64 On Fri, 08 Apr 2011 19:27:11 +0200, Rafał Miłecki wrote: > 2011/4/8 Arend van Spriel : >> On Fri, 08 Apr 2011 18:56:13 +0200, Rafał Miłecki >> wrote: >> >>> 2011/4/6 Arend van Spriel : >>>> >>>> 3. Device identification >>>> >>>> The cores are identified by manufacturer, core id and revision in your >>>> patch. I would not use the revision because 4 out of 5 times a >>>> revision >>>> change does indicate a hardware change but no change in programming >>>> interface. The enumeration data does contain a more selective field >>>> indicating the core class (4 bits following the core identifier). I >>>> suggest >>>> to replace the revision field by this class field. >>> >>> Could you say something more about *class*, please? For my BCM43224 it >>> seems to be 0x0. WIll check BCM4313 in a moment. >>> >> >> In principal the manufacturer id is unique (defined/assigned by JEDEC >> www.jedec.org) and the chip id and chip class are defined by the >> manufacturer. So I can only indicate what classes Broadcom uses in >> combination with the manufacturer id BRCM, ARM and MIPS. >> >> /* Component Classes */ >> #define CC_SIM 0 >> #define CC_EROM 1 >> #define CC_CORESIGHT 9 >> #define CC_VERIF 0xb >> #define CC_OPTIMO 0xd >> #define CC_GEN 0xe >> #define CC_PRIMECELL 0xf >> >> Looking at this it seems strange that you see a class value of 0x0. It >> may >> be rarely used or for non-production chips only (for simulation, chip >> bringup) which may require additional (debug) functions. So question is >> whether you will need it, but it is specified by ARM and it is up to >> manufacturers to use it. So I it is better to be safe than sorry and >> have >> this in the device id. > > OK, thanks. I'm compiling kernel with patch V2 right now. Of course > class included. > Great. I tried to apply you patch on my kernel tree but it did not apply. Which tree are you using. linux-next, wireless-next? Gr. AvS -- "The most merciful thing in the world, I think, is the inability of the human mind to correlate all its contents." - "The Call of Cthulhu" -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/