From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 1C20822172E; Fri, 31 Oct 2025 08:32:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761899536; cv=none; b=i087A/qV2uj1hCsTNejeDWJWHC9NqEXk+ZNhqVk6Z2QwyL9w+ny6/oGipcG3Llbo+dm5vY0qrmcC133nN3cy7EfkMdJS47ZnbU/yAq/EUGJ4pi4TUR7uPdRCqD3HKZEiXxnN1X3uOi6f9nUJw8SidLyl9EW9/pm4g3J48RCOrc8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761899536; c=relaxed/simple; bh=nx1bFMhC+/ZnLv3glzJqj6JjZtyvZj8yaPT91eXoZf4=; h=Message-ID:Date:MIME-Version:Subject:To:References:From: In-Reply-To:Content-Type; b=NeajZe/RQ+aG0tE6sMeQL0Pq+ogSG7/a7rwjyDzHLd4DpzclQiq2TbKkFzrRn+yUdd69HDSTlyqFAZEBcGeTcAiYLVfTKpMO4PTdNQQDWVbs4eZbdijXu5bBvmtzMduOzHaBfFmbjp/I/oHYxQrPiTLIxLzHL3NXRYUEHt4gNNU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=jDcMHA0E; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="jDcMHA0E" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2CA0BC4CEE7; Fri, 31 Oct 2025 08:32:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761899535; bh=nx1bFMhC+/ZnLv3glzJqj6JjZtyvZj8yaPT91eXoZf4=; h=Date:Subject:To:References:From:In-Reply-To:From; b=jDcMHA0EeTHBflo78In4rfteRxl09xWjSsqlUyk0dxK92NRm3p6aefJ1PxO1fD6Ys mXnAO/lS4/ZnRJ2XvppyotMtHyCquIGJiCU5weSqmV/vFxdNW80XKETY2E9M8MIWkN RUKh2UrwzuaFk4iJtB0J7wFRIvBdJ4utq496sJXS706LUYaBuYoSca/ywKm/UuEvOO fNeyGho5WNhv4qmfl5y/DDWHQ4V8573EpVh6eqmPOWW0nGKxW0LimPwrheQ6ZHOiBV D9ayPWxuOuD1LlVOgnnG6F0Xc9zY5+FfWqo7sriPmKFVB88cMrbXS/C30pTbnQ4D/B Cn7c64FD41pHw== Message-ID: <3218e1dc-b8ba-449c-bed0-1615d8aab0b7@kernel.org> Date: Fri, 31 Oct 2025 09:32:11 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH v2 0/3] i3c: dw: Add Altera SoCFPGA runtime PM disable quirk To: adrianhoyin.ng@altera.com, alexandre.belloni@bootlin.com, Frank.Li@nxp.com, wsa+renesas@sang-engineering.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, dinguyen@kernel.org, linux-i3c@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; keydata= xsFNBFVDQq4BEAC6KeLOfFsAvFMBsrCrJ2bCalhPv5+KQF2PS2+iwZI8BpRZoV+Bd5kWvN79 cFgcqTTuNHjAvxtUG8pQgGTHAObYs6xeYJtjUH0ZX6ndJ33FJYf5V3yXqqjcZ30FgHzJCFUu JMp7PSyMPzpUXfU12yfcRYVEMQrmplNZssmYhiTeVicuOOypWugZKVLGNm0IweVCaZ/DJDIH gNbpvVwjcKYrx85m9cBVEBUGaQP6AT7qlVCkrf50v8bofSIyVa2xmubbAwwFA1oxoOusjPIE J3iadrwpFvsZjF5uHAKS+7wHLoW9hVzOnLbX6ajk5Hf8Pb1m+VH/E8bPBNNYKkfTtypTDUCj NYcd27tjnXfG+SDs/EXNUAIRefCyvaRG7oRYF3Ec+2RgQDRnmmjCjoQNbFrJvJkFHlPeHaeS BosGY+XWKydnmsfY7SSnjAzLUGAFhLd/XDVpb1Een2XucPpKvt9ORF+48gy12FA5GduRLhQU vK4tU7ojoem/G23PcowM1CwPurC8sAVsQb9KmwTGh7rVz3ks3w/zfGBy3+WmLg++C2Wct6nM Pd8/6CBVjEWqD06/RjI2AnjIq5fSEH/BIfXXfC68nMp9BZoy3So4ZsbOlBmtAPvMYX6U8VwD TNeBxJu5Ex0Izf1NV9CzC3nNaFUYOY8KfN01X5SExAoVTr09ewARAQABzSVLcnp5c3p0b2Yg S296bG93c2tpIDxrcnprQGtlcm5lbC5vcmc+wsGVBBMBCgA/AhsDBgsJCAcDAgYVCAIJCgsE FgIDAQIeAQIXgBYhBJvQfg4MUfjVlne3VBuTQ307QWKbBQJoF1BKBQkWlnSaAAoJEBuTQ307 QWKbHukP/3t4tRp/bvDnxJfmNdNVn0gv9ep3L39IntPalBFwRKytqeQkzAju0whYWg+R/rwp +r2I1Fzwt7+PTjsnMFlh1AZxGDmP5MFkzVsMnfX1lGiXhYSOMP97XL6R1QSXxaWOpGNCDaUl ajorB0lJDcC0q3xAdwzRConxYVhlgmTrRiD8oLlSCD5baEAt5Zw17UTNDnDGmZQKR0fqLpWy 786Lm5OScb7DjEgcA2PRm17st4UQ1kF0rQHokVaotxRM74PPDB8bCsunlghJl1DRK9s1aSuN hL1Pv9VD8b4dFNvCo7b4hfAANPU67W40AaaGZ3UAfmw+1MYyo4QuAZGKzaP2ukbdCD/DYnqi tJy88XqWtyb4UQWKNoQqGKzlYXdKsldYqrLHGoMvj1UN9XcRtXHST/IaLn72o7j7/h/Ac5EL 8lSUVIG4TYn59NyxxAXa07Wi6zjVL1U11fTnFmE29ALYQEXKBI3KUO1A3p4sQWzU7uRmbuxn naUmm8RbpMcOfa9JjlXCLmQ5IP7Rr5tYZUCkZz08LIfF8UMXwH7OOEX87Y++EkAB+pzKZNNd hwoXulTAgjSy+OiaLtuCys9VdXLZ3Zy314azaCU3BoWgaMV0eAW/+gprWMXQM1lrlzvwlD/k whyy9wGf0AEPpLssLVt9VVxNjo6BIkt6d1pMg6mHsUEVzsFNBFVDXDQBEADNkrQYSREUL4D3 Gws46JEoZ9HEQOKtkrwjrzlw/tCmqVzERRPvz2Xg8n7+HRCrgqnodIYoUh5WsU84N03KlLue MNsWLJBvBaubYN4JuJIdRr4dS4oyF1/fQAQPHh8Thpiz0SAZFx6iWKB7Qrz3OrGCjTPcW6ei OMheesVS5hxietSmlin+SilmIAPZHx7n242u6kdHOh+/SyLImKn/dh9RzatVpUKbv34eP1wA GldWsRxbf3WP9pFNObSzI/Bo3kA89Xx2rO2roC+Gq4LeHvo7ptzcLcrqaHUAcZ3CgFG88CnA 6z6lBZn0WyewEcPOPdcUB2Q7D/NiUY+HDiV99rAYPJztjeTrBSTnHeSBPb+qn5ZZGQwIdUW9 YegxWKvXXHTwB5eMzo/RB6vffwqcnHDoe0q7VgzRRZJwpi6aMIXLfeWZ5Wrwaw2zldFuO4Dt 91pFzBSOIpeMtfgb/Pfe/a1WJ/GgaIRIBE+NUqckM+3zJHGmVPqJP/h2Iwv6nw8U+7Yyl6gU BLHFTg2hYnLFJI4Xjg+AX1hHFVKmvl3VBHIsBv0oDcsQWXqY+NaFahT0lRPjYtrTa1v3tem/ JoFzZ4B0p27K+qQCF2R96hVvuEyjzBmdq2esyE6zIqftdo4MOJho8uctOiWbwNNq2U9pPWmu 4vXVFBYIGmpyNPYzRm0QPwARAQABwsF8BBgBCgAmAhsMFiEEm9B+DgxR+NWWd7dUG5NDfTtB YpsFAmgXUF8FCRaWWyoACgkQG5NDfTtBYptO0w//dlXJs5/42hAXKsk+PDg3wyEFb4NpyA1v qmx7SfAzk9Hf6lWwU1O6AbqNMbh6PjEwadKUk1m04S7EjdQLsj/MBSgoQtCT3MDmWUUtHZd5 RYIPnPq3WVB47GtuO6/u375tsxhtf7vt95QSYJwCB+ZUgo4T+FV4hquZ4AsRkbgavtIzQisg Dgv76tnEv3YHV8Jn9mi/Bu0FURF+5kpdMfgo1sq6RXNQ//TVf8yFgRtTUdXxW/qHjlYURrm2 H4kutobVEIxiyu6m05q3e9eZB/TaMMNVORx+1kM3j7f0rwtEYUFzY1ygQfpcMDPl7pRYoJjB dSsm0ZuzDaCwaxg2t8hqQJBzJCezTOIkjHUsWAK+tEbU4Z4SnNpCyM3fBqsgYdJxjyC/tWVT AQ18NRLtPw7tK1rdcwCl0GFQHwSwk5pDpz1NH40e6lU+NcXSeiqkDDRkHlftKPV/dV+lQXiu jWt87ecuHlpL3uuQ0ZZNWqHgZoQLXoqC2ZV5KrtKWb/jyiFX/sxSrodALf0zf+tfHv0FZWT2 zHjUqd0t4njD/UOsuIMOQn4Ig0SdivYPfZukb5cdasKJukG1NOpbW7yRNivaCnfZz6dTawXw XRIV/KDsHQiyVxKvN73bThKhONkcX2LWuD928tAR6XMM2G5ovxLe09vuOzzfTWQDsm++9UKF a/A= In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 31/10/2025 09:27, adrianhoyin.ng@altera.com wrote: > From: Adrian Ng Ho Yin > > This patchset adds support for an Altera SoCFPGA-specific quirk > in the Synopsys DesignWare I3C master driver. > > While running the I3C compliance test suite on the Altera Agilex5 SoCFPGA, > the I3C bus was observed to hang when a slave device issued an IBI after > the Dynamic Address Assignment (DAA) process completed. > > This issue occurs because the controller enters a suspended state after > DAA due to runtime PM being enabled. When suspended, the controller stops > driving the SCL line. As a result, an IBI transfer cannot complete, leaving > the SDA line stuck low and the bus in a hung state. > > To address this issue, a new compatible string, > "altr,socfpga-dw-i3c-master", is introduced to identify the > SoCFPGA variant. When this compatible string is matched, a new > quirk (DW_I3C_DISABLE_RUNTIME_PM_QUIRK) disables all runtime PM > operations in the driver, ensuring the controller remains active > to handle IBI transactions reliably. > > --- > changelog: > v1->v2: > *Add new compatible string in dw i3c dt binding. > *Added new compatible string for altr socfpga platform. > *Remove Kconfig that disables runtime PM added in v1. > *Update implementation to disable runtime PM via compatible string > match Why is this still RFC? Please always provide reason in changelog and be aware that some maintainers - including me - skip or just look briefly through RFC patches since they are simply not ready. Also remember that versioning *continuous* when dropping non-RFC. Best regards, Krzysztof