From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82A0FC04A94 for ; Wed, 2 Aug 2023 21:57:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230512AbjHBV54 (ORCPT ); Wed, 2 Aug 2023 17:57:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51402 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230223AbjHBV5v (ORCPT ); Wed, 2 Aug 2023 17:57:51 -0400 Received: from mgamail.intel.com (unknown [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A832E173A; Wed, 2 Aug 2023 14:57:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1691013470; x=1722549470; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=qXkV3RSJ67wGN/RTTtLjS+7GJSXx5qeFXBCzPChuO04=; b=OcsPkVyRGYaIB8Z+YKr4M0zLwcdfPlDlKyQ1hg9gLRSglCvGBR+V719j SV8+yuirBCzHOYGTsnRIfOzkwcE2ylEbpW5F6rxE8K1iFFjUO9oPO+rr+ CXz2e+a7b9z1YT/y1d8OpdFhvgFjtGQUvk8b2Yjl+9flWtb0yomAFwdo5 harcdTy5CbM7zfv8zKm0xy4aHr1fByXYrYn/IDcy0uJ+EBwSY4RzMvQeD IK6aRV+tORRWhQ5BLvcxzfMuOgLgtRR0DsNQVAUAfkexF3Vz41lM20E8D dSjRFa3/ZSm8rvoDgV+gTSnWS4ZRh27kncRGnZjbDqUBgzUNqXM/8cI6T w==; X-IronPort-AV: E=McAfee;i="6600,9927,10790"; a="400647660" X-IronPort-AV: E=Sophos;i="6.01,250,1684825200"; d="scan'208";a="400647660" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Aug 2023 14:57:50 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10790"; a="706320847" X-IronPort-AV: E=Sophos;i="6.01,250,1684825200"; d="scan'208";a="706320847" Received: from smile.fi.intel.com ([10.237.72.54]) by orsmga006.jf.intel.com with ESMTP; 02 Aug 2023 14:57:46 -0700 Received: from andy by smile.fi.intel.com with local (Exim 4.96) (envelope-from ) id 1qRJqj-000CNh-08; Thu, 03 Aug 2023 00:57:45 +0300 Date: Thu, 3 Aug 2023 00:57:44 +0300 From: Andy Shevchenko To: Conor Dooley Cc: Jisheng Zhang , Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Ilpo =?iso-8859-1?Q?J=E4rvinen?= , Jiri Slaby , linux-serial@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/2] dt-bindings: serial: snps-dw-apb-uart: make interrupt optional Message-ID: References: <20230802150545.3742-1-jszhang@kernel.org> <20230802150545.3742-2-jszhang@kernel.org> <20230802-halogen-bungee-63273b2c456c@spud> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230802-halogen-bungee-63273b2c456c@spud> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Wed, Aug 02, 2023 at 04:43:48PM +0100, Conor Dooley wrote: > On Wed, Aug 02, 2023 at 11:05:44PM +0800, Jisheng Zhang wrote: > > The driver fall back to poll style when there's no irq. "poll" still > > looks better than no support. > > What is the user for this where the interrupt is not actually wired up > in the hardware? FYI: kernel console doesn't use interrupts, so for example it might be the debug port. Note, I have no idea of the Zhang's case, just my assumption. -- With Best Regards, Andy Shevchenko