From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751371AbcCAWrF (ORCPT ); Tue, 1 Mar 2016 17:47:05 -0500 Received: from mx2.suse.de ([195.135.220.15]:42362 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750843AbcCAWrE (ORCPT ); Tue, 1 Mar 2016 17:47:04 -0500 Subject: Re: [PATCH 7/8] ARM64: dts: amlogic: Extend GXBaby GIC node To: Andre Przywara , linux-meson@googlegroups.com References: <1456789465-2962-1-git-send-email-afaerber@suse.de> <1456789465-2962-8-git-send-email-afaerber@suse.de> <56D57673.8030702@arm.com> <56D57A7F.5020806@suse.de> <56D58E88.2080700@arm.com> Cc: Mark Rutland , devicetree , Matthias Brugger , Pawel Moll , Ian Campbell , Catalin Marinas , Nicolas Saenz , Will Deacon , LKML , Rob Herring , Kumar Gala , Carlo Caione , linux-arm-kernel@lists.infradead.org From: =?UTF-8?Q?Andreas_F=c3=a4rber?= X-Enigmail-Draft-Status: N1110 Organization: SUSE Linux GmbH Message-ID: <56D61BE3.90505@suse.de> Date: Tue, 1 Mar 2016 23:46:59 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 MIME-Version: 1.0 In-Reply-To: <56D58E88.2080700@arm.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am 01.03.2016 um 13:43 schrieb Andre Przywara: > On 01/03/16 11:18, Andreas Färber wrote: >> Am 01.03.2016 um 12:01 schrieb Andre Przywara: >>> On 29/02/16 23:44, Andreas Färber wrote: >>>> reg = <0x0 0xc4301000 0 0x1000>, >>>> - <0x0 0xc4302000 0 0x0100>; >>>> + <0x0 0xc4302000 0 0x0100>, >>> >>> Please use 0x2000 for the size here. I guess this is really the GIC-400 >>> from ARM, and in this case this is the right size, [1] is the reference >>> here. This will enable EOI mode 1 for KVM. >> >> Will test later. >> >> Is there any easy way to find out whether or not this is that GIC-400? > > If you can read registers: GICD_IIDR and PIDRx have some info: > http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0471b/CHDIFAEE.html > So if your U-Boot for instance supports md, a dump of: > md.l c4301008 1 > md.l c4301fd0 30 > > would help to identify the GIC. gxb_p200_v1#md.l c4301008 1 c4301008: 0200143b ;... gxb_p200_v1#md.l c4301fd0 30 c4301fd0: 00000004 00000000 00000000 00000000 ................ c4301fe0: 00000090 000000b4 0000002b 00000000 ........+....... c4301ff0: 0000000d 000000f0 00000005 000000b1 ................ c4302000: 00000060 000000f0 00000003 000003ff `............... c4302010: 00000000 000000ff 000003ff 00000000 ................ c4302020: 00000000 00000000 00000000 00000000 ................ c4302030: 00000000 00000000 00000000 00000000 ................ c4302040: 00000000 00000000 00000000 00000000 ................ c4302050: 00000000 00000000 00000000 00000000 ................ c4302060: 00000000 00000000 00000000 00000000 ................ c4302070: 00000000 00000000 00000000 00000000 ................ c4302080: 00000000 00000000 00000000 00000000 ................ Cheers, Andreas -- SUSE Linux GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany GF: Felix Imendörffer, Jane Smithard, Graham Norton; HRB 21284 (AG Nürnberg)