From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 85E8F38A700; Wed, 17 Jun 2026 10:54:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.15 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781693680; cv=none; b=aM+Ut2M6Uf0TkeCeEHJqKnIOqSbm4lHQvCCfGTHYEn8uynB9HjoAdPvHVERubI3i6yP7GLRjIAoFYgdhAIzafykMvVcUv8HNwL3XNl/BICJQ41LlAdMDhwd+OmpnAw6OaIs8uDM47LyLQv/nsEYkUJ/PTgqEbDVYF399ocOuvWs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781693680; c=relaxed/simple; bh=6cQoc0XDwgSC3rq88jE9ZOu9X4zh8mv9B+GVkjwgNbw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=mNTOVCOYOzsa/4GdSbsX+Um33fq1N17oAVJCxfSDgSRZkygjkGPI8RjTvmlAQWwoqKihjKk5JeFL8DH3P2t3jX0DsmjiYBrnkfDtyAACq9MmrNUsuheKaWPNqhzDTAgiEdMkfK4v0WBgdG/JqhzzBpestjU2BcVLIvbDBFMG080= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=M6TqAG66; arc=none smtp.client-ip=192.198.163.15 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="M6TqAG66" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1781693678; x=1813229678; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=6cQoc0XDwgSC3rq88jE9ZOu9X4zh8mv9B+GVkjwgNbw=; b=M6TqAG66mpXQfdzVqHbjvcNoQFcOHKDDTPVOIH64/w/c0AzcOLidC7og HjA4GLnCxad8+1ZlTWwjTO2h1G48sJvTnuud2epzgcB8u/ZpY7wIUNWbe BAV9lpPHrsmNWlvMBzXmH9IoyGmgYowAxtv75Tpw2gVejLQuZLoQEUBtG UppsUoW314FmaGcMGqKhXmAaRi/kdRnRw+19XzEWO45wNaAqmQ5Far0ju S5Rx8AWLzAMx2s65n1jeYZ9Br93e4URxCqJ60BrXt0QRIacs9+wFgUyif AaW/ZmqxQJDXHxndVzFomABRLYNHAqhMR3K6kvGydQoy1Ktbbt1MtNdaz Q==; X-CSE-ConnectionGUID: nrX7vpcHQ0u2PsMtaT2dkg== X-CSE-MsgGUID: 69+3ARYjR8CR4PPiCNoY6w== X-IronPort-AV: E=McAfee;i="6800,10657,11819"; a="82573614" X-IronPort-AV: E=Sophos;i="6.24,209,1774335600"; d="scan'208";a="82573614" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jun 2026 03:54:37 -0700 X-CSE-ConnectionGUID: kZdxgdTaTEWgttFmkm0QHQ== X-CSE-MsgGUID: REd9SseKSFm2YWK0wPnkbQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.24,209,1774335600"; d="scan'208";a="245129648" Received: from black.igk.intel.com ([10.91.253.5]) by fmviesa007.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jun 2026 03:54:35 -0700 Date: Wed, 17 Jun 2026 12:54:32 +0200 From: Raag Jadav To: Zhan Wei Cc: matthew.brost@intel.com, thomas.hellstrom@linux.intel.com, rodrigo.vivi@intel.com, corbet@lwn.net, skhan@linuxfoundation.org, intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v4] drm/xe/hwmon: document DG2 fan speed reporting quirk Message-ID: References: <20260602161707.18922-1-zhanwei919@gmail.com> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260602161707.18922-1-zhanwei919@gmail.com> On Wed, Jun 03, 2026 at 12:17:07AM +0800, Zhan Wei wrote: > On DG2 the driver always shows two fan channels, because the > FSC_READ_NUM_FANS command does not work on some cards. OEMs decide how > the fans map to tach channels, so two fans can share one tach line. > When that happens, the second channel reads 0 RPM even though the fan > is spinning. > > Note this on the fan2_input ABI entry so the steady 0 RPM is not > mistaken for a driver bug. > > Fixes: 28f79ac609de ("drm/xe/hwmon: expose fan speed") > Signed-off-by: Zhan Wei > Reviewed-by: Raag Jadav This one seems got lost in the noise. Any takers? Raag