From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.18]) (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 7DE4428E3F; Tue, 15 Apr 2025 12:29:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744720144; cv=none; b=OW9EuV8lR72s6uv17q550xw6WiAYtMhmDXddGm464MHbPg+U2q/h6paWuVyh5ku/iaCTito6lXnXA/O4F7ha4bWJt7UeLpzb+pPqjY8JtNLqQFMAs2WDUGHvxmZQwB1155LUIPBVXM/92D0I2TWUpa3/RZ1xTMX81pMzw15arWg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744720144; c=relaxed/simple; bh=jeNGGQ+jl6TBlSSFvy0LEjx1D5vJ6qTXvhhUGlok6Jg=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=ErJ9QvEg8nzgTMXzlw9+gC1lFBm/Nv66qDL52DxAGQqbMVT+mljfrxGC/y978gudpQg8UeVTt6doHZdkznSURnxjFb8pjpAicnyCfOlAuaExBbgEOhmClCsZ2D7OS8nFGzri4DYwD2xST//4zeLqWQF7rYOnghbjBXT6UbgFusE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=gjN9PcmA; arc=none smtp.client-ip=192.198.163.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="gjN9PcmA" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1744720142; x=1776256142; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=jeNGGQ+jl6TBlSSFvy0LEjx1D5vJ6qTXvhhUGlok6Jg=; b=gjN9PcmAXgUqDbxPM5Hqzr4RzDUUAfCsZjHEku8up5oJVjfKwAq5vyv3 UihFSTKpXfqo67CHoN8O8nijovIdMD+KJWgpxMtu3DnSzDH+gM96ASmkD IV3DBEN0+zuFaR0Z1IN33GBW93YwhoSBVdHXT0I5khKTlmeUnRaOBXgLw RQpfl5VbQi07kadb9LLIUti4gEdpIQQfF8XppwnBsesb6zTEYqs0x6ErD KMKdIKyzg86sOxtyyQNq8Ujbd9zPEY0nFgWcpMVIL7RM9reyby63jPK7V Js4MfXUc4atcxsERH1Hbp8V4NmDYua6m+N1E5B950tIwDCRF0lLHrYsgL g==; X-CSE-ConnectionGUID: iAkLR3iYSFWgYh77TisJSg== X-CSE-MsgGUID: RbKB4DZJTQ6MMZU5soS+MQ== X-IronPort-AV: E=McAfee;i="6700,10204,11404"; a="45460456" X-IronPort-AV: E=Sophos;i="6.15,213,1739865600"; d="scan'208";a="45460456" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by fmvoesa112.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Apr 2025 05:29:02 -0700 X-CSE-ConnectionGUID: 83ODqVSOTNWV6/am7Zekhg== X-CSE-MsgGUID: eWvKcCs4TFy4v5tMYMIh7A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.15,213,1739865600"; d="scan'208";a="134205081" Received: from mylly.fi.intel.com (HELO [10.237.72.154]) ([10.237.72.154]) by fmviesa003.fm.intel.com with ESMTP; 15 Apr 2025 05:28:59 -0700 Message-ID: <715d883f-184f-474a-a222-208d3aa03d2c@linux.intel.com> Date: Tue, 15 Apr 2025 15:28:58 +0300 Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: Hitting WARN_ON_ONCE in i2c-designware-common.c To: Jesper Dangaard Brouer , Luis Oliveira , Andy Shevchenko Cc: Mika Westerberg , Jan Dabros , Andi Shyti , linux-i2c@vger.kernel.org, LKML , kernel-team References: <20c191d9-5f7a-4ec6-a663-dcc8d0b54c18@kernel.org> Content-Language: en-US From: Jarkko Nikula In-Reply-To: <20c191d9-5f7a-4ec6-a663-dcc8d0b54c18@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Hi On 4/15/25 3:03 PM, Jesper Dangaard Brouer wrote: > Hi Maintainers, > > I'm hitting a WARN_ON_ONCE in drivers/i2c/busses/i2c-designware-common.c > when booting the kernel on our Gen12 hardware. > > I'm using devel kernel net-next at commit 1a9239bb425 (merge tag 'net- > next-6.15'). > Is this a regression so was this working before? Support for this platform was added back in 2016 by the commit e4e666ba74d4 ("i2c: designware: Add device HID for future AMD I2C controller"). > [   10.062651] i2c_designware AMDI0010:00: Unknown Synopsys component > type: 0xffffffff > [   10.073312] pps_core: LinuxPPS API ver. 1 registered > [   10.073372] piix4_smbus 0000:00:14.0: SMBus Host Controller at 0xb00, > revision 0 > [   10.075433] i2c_designware AMDI0010:01: Unknown Synopsys component > type: 0xffffffff These "Unknown Synopsys component type: 0xffffffff" errors indicate IP is not alive. Perhaps linked to the missing clock or not powered.