From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756806AbcBJJBD (ORCPT ); Wed, 10 Feb 2016 04:01:03 -0500 Received: from mga03.intel.com ([134.134.136.65]:44836 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752076AbcBJJBB convert rfc822-to-8bit (ORCPT ); Wed, 10 Feb 2016 04:01:01 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.22,425,1449561600"; d="scan'208";a="912168573" From: Jani Nikula To: Nick Bowler , Ville =?utf-8?B?U3lyasOkbMOk?= Cc: Daniel Vetter , "linux-kernel\@vger.kernel.org" , "dri-devel\@lists.freedesktop.org" Subject: Re: PROBLEM: Intel HDMI output busticated on 4.4 (regression) In-Reply-To: Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo References: <20160119222622.GA16397@draconx.ca> <569F0D4B.6040607@intel.com> <56A0BC04.9080500@intel.com> <20160209170351.GT23290@intel.com> User-Agent: Notmuch/0.21+34~g7dd0d52 (http://notmuchmail.org) Emacs/24.4.1 (x86_64-pc-linux-gnu) Date: Wed, 10 Feb 2016 11:00:58 +0200 Message-ID: <8737t10wj9.fsf@intel.com> MIME-Version: 1.0 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 On Tue, 09 Feb 2016, Nick Bowler wrote: > On 2/9/16, Ville Syrjälä wrote: >> BTW I'm not at all convinced about the current live status bit defines >> we have for g4x. Supposedly someone tested them and found that they >> don't match the spec, but IIRC when I tried them on one g4x machine >> here, they did match the spec (well, at least for the ports present >> on that particular board). >> >> So something like this may or may not help: >> >> diff --git a/drivers/gpu/drm/i915/i915_reg.h >> b/drivers/gpu/drm/i915/i915_reg.h >> index 188ad5de020f..80c08016e522 100644 >> --- a/drivers/gpu/drm/i915/i915_reg.h >> +++ b/drivers/gpu/drm/i915/i915_reg.h >> @@ -3302,9 +3302,9 @@ enum skl_disp_power_wells { >> * Please check the detailed lore in the commit message for for >> experimental >> * evidence. >> */ >> -#define PORTD_HOTPLUG_LIVE_STATUS_G4X (1 << 29) >> +#define PORTD_HOTPLUG_LIVE_STATUS_G4X (1 << 27) >> #define PORTC_HOTPLUG_LIVE_STATUS_G4X (1 << 28) >> -#define PORTB_HOTPLUG_LIVE_STATUS_G4X (1 << 27) >> +#define PORTB_HOTPLUG_LIVE_STATUS_G4X (1 << 29) >> /* VLV DP/HDMI bits again match Bspec */ >> #define PORTD_HOTPLUG_LIVE_STATUS_VLV (1 << 27) >> #define PORTC_HOTPLUG_LIVE_STATUS_VLV (1 << 28) > > Well, I applied this on 4.5-rc3 and it seems to fix things. Ville, please do a proper patch, using your best judgement on elk vs. ctg difference. BR, Jani. > > Thanks, > Nick > _______________________________________________ > dri-devel mailing list > dri-devel@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/dri-devel -- Jani Nikula, Intel Open Source Technology Center