From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.zeus03.de (zeus03.de [194.117.254.33]) (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 10695314B73 for ; Thu, 25 Sep 2025 20:34:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=194.117.254.33 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758832454; cv=none; b=BJmQfGO/0My45nFzfV1PSQlXERiGI3l14twqIciZeAtDU1hz/q0NsLELe0uojYVRzOhT0sQ/ZtSnPaBnjhMUA+SQEHFEEk9rVSjyEoPrtVh0ProJ/umtzUBeDavXT3JPvIusiK1cFb2CFSpCtQGpm2HOODVpFY75Horth0me4Fw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758832454; c=relaxed/simple; bh=znLnFJtLC+oBFDusVWzj97PWoNvRxO9zLc0a5hiIE9E=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=QY0dOVtu5bsDwxM9iLQwoQWf8O1/xgsTf8YCHP06bjJyoHmLQqJg9lqsWuVnJEb4ThYFDayKhhFO+/fK/CGfV66I+tfmeTVdVjrcuzRD73aNTvHK22ZoJIuPlCigNtwUIgMWd3hvyLuxN7MdXfMI+D1K5kWAKEvYSUFhck/UMp8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com; spf=pass smtp.mailfrom=sang-engineering.com; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b=E7SIPsmE; arc=none smtp.client-ip=194.117.254.33 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b="E7SIPsmE" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= sang-engineering.com; h=date:from:to:cc:subject:message-id :references:mime-version:content-type:in-reply-to; s=k1; bh=znLn FJtLC+oBFDusVWzj97PWoNvRxO9zLc0a5hiIE9E=; b=E7SIPsmEgeKSHSnxBJny B1OevX2s4nHbHv08p7jv1riBBbLlN0QuyxzNSzMDvVdjeaLzuRfLzmCDq9/hTs5J pXxJsG2QHROCiJMxIVM+joDYftRpxKJ/y+9aYRMm74OZBs1Bt6gABQyN98YdBcd/ wEKMQA422EmDMxJL6cUaA5s3aKXPCv8Jzd/tStkzDZHNxltB0bDRwdktNStX8l9I qECx0bvUsxiXax0sEswEM4gLvdV+GremkaY+3nPezjWXCUDEOheD98PQh1l15p8s 0o+ukxSldfrK6A3Fimj+0gVGLVQNcw/E+KTs5XjuMexDiaXd1gc6vMM4Vs+2cRcr XA== Received: (qmail 2009427 invoked from network); 25 Sep 2025 22:34:00 +0200 Received: by mail.zeus03.de with UTF8SMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 25 Sep 2025 22:34:00 +0200 X-UD-Smtp-Session: l3s3148p1@hGPUFqY/jIAujntx Date: Thu, 25 Sep 2025 22:34:00 +0200 From: Wolfram Sang To: Rengarajan S Cc: tharunkumar.pasumarthi@microchip.com, kumaravel.thiagarajan@microchip.com, UNGLinuxDriver@microchip.com, andi.shyti@kernel.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH RESEND v1 i2c-master] i2c: mchp-pci1xxxx: PCIe Hot reset disable support for Rev C0+ devices Message-ID: References: <20250925140049.14454-1-rengarajan.s@microchip.com> Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="eCTXuL0ZtUxVITRA" Content-Disposition: inline In-Reply-To: <20250925140049.14454-1-rengarajan.s@microchip.com> --eCTXuL0ZtUxVITRA Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Sep 25, 2025 at 07:30:48PM +0530, Rengarajan S wrote: > Systems that issue PCIe hot reset requests during a suspend/resume > cycle cause PCI1XXXX device revisions prior to C0 to get its SMBUS > controller registers reset to hardware default values. This results > in device inaccessibility and I2C read/write failure. Starting with > Revision C0, support was added in the device hardware (via the Hot > Reset Disable Bit) to allow resetting only the PCIe interface and its > associated logic, but preserving the SMBUS registers during a hot > reset. This patch enables the hot reset disable feature during suspend/ > resume for C0 and later revisions of the device. >=20 > Signed-off-by: Rengarajan S Tharun? Kumaravel? Do you have time to look at these patches? --eCTXuL0ZtUxVITRA Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAmjVpzQACgkQFA3kzBSg KbYg6Q/9G4o1ez2b5CeSRkBiQ9oef/21n6+5/hizIs3nfCohSeEfkHpahk54LPfY N2ZDOABDO3m2QH2nQrGc/vVy77uP9E9FSvS1r24ag1SbDGZwGXsshmEYr6WFvdYQ Ozo+ZgWd3TyR7StvRvU3Qlgef+Ia9WnwtV0N1eqfpFDoE73HuAR2QN/n6El/GNKv GDSFbW/p6/dJ6zGx9i+C7I5Z316W4nxaePk4BVl6OsSAta3/wjdAxToiApGMBNuW cRVXCYhXv0BpvNaqhjBD1TZfslLMSzS8uWr3r/Yf0iDIvY2UdOAYQkDYqT9LuRJ+ p2UlYxLXT9P0p7vcLBQ6Pb3xwzGGV4k2STHsIooZlbsVEss8iuIwJeBTZDpwIew+ Cr0apuuoohgjhJEKyxVD/9kAy7/SPJ4YEHYJrZBmOcCRUQr2ETc6H7Usjv0uGo8D i2ss4jIsWtYn2X5Jxjy0zV8TqQFL/V4igcXJlBKpSie0/qGkN4GWX2ErSivLu3Cg DRACFs12cGUTcScfDivp9vl1wR9G6akMlJb0pccU4thommz/IAM0oBrq9aCr3afJ GadY1Prd1mVmIvyomR+LqMGmMKyn63XVKbkwTUD3y33pB+fT4yt6US+GPnbAE3xU Z1BccCKmM/OQRP0Z65sKx4MakIFkie0p6Ff1MnmWPIGh9BioOPo= =loOF -----END PGP SIGNATURE----- --eCTXuL0ZtUxVITRA--