From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794260538; b=iBT1/CNog2P3CSKm183aXgWb48mOToorCurllMvpJGdAmXpGuzLbXNxjZliXsZoA/O0R eQXzmTVBo7BTeSah0VK9cl2G6GSPwvv9GY4uKb0F9Aq4oo2KfmYQlvLy0lD2emNZ0I9Kb 5DpoTSsK8hqA+zNp2J8C84ZWQyKBmmRgr1jomPEVO+H2eQMG5SvFJThZ10Y8ljBuD2MJd DD3gc55RMsOoydRPYskpsHPSmeV3DH7Fcu0IDVICYEhrIAgdXDOCmoJwJ6fxdBGPK1CCO xXMm872EH1Wv64Y8Zx5NWHKDxtyfLkCLkyDORYe9qHyrPU0RQKPbatm35epuSz/F6/A== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794260538; h=Received:DKIM-Signature:Message-ID:Date:MIME-Version:User-Agent: Subject:To:Cc:References:From:Content-Language:Autocrypt:In-Reply-To: Content-Type:Content-Transfer-Encoding; bh=Zy4UuoFBueAx92pWEU3ihUrngaeQDz2jIl4FOkbivHA=; b=NjfNrX7/WLl2goSrtyfXY8qoeR5uTcM/IWz1kZ9O07nJSeNI73Ke2JfRsgPIo/N1/7A1 +3TdopdxXnE/gF3xRyjX2DXB4//RNdSA/g/8Lu+SIVlMuBb/8eNd0F+D4Eovf8E9bm2ky wr+sSoj7SUYyLiMnGdYb0qUGafr6pzaqW0/BJy0IUWcq9BkHbMH9LQqyq4oxzq5AieFng xpLWs4brmFtOHawXI1pMCynDqpo1CzNbDAuBoALx6MwxQhRueUbdsumqr9soX35WE5SMK uXsW3vbb3IAjgGUBZ8FBnMMn8P1i7m9TwB/OWzM9TTPj1MTzwNIZ0k7t5O2yZMffTdw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=cq1I4j7p; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AE04B606A31C; Mon, 9 Nov 2026 21:42:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=cq1I4j7p Received: by smtp.kernel.org (Postfix) with ESMTPSA id 95AFA1F0089F; Mon, 9 Nov 2026 21:42:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794260537; bh=Zy4UuoFBueAx92pWEU3ihUrngaeQDz2jIl4FOkbivHA=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=cq1I4j7p9kn2a3YkfPnya0qAcRzUYH3PJ6quUDgY5Thpo4HrfbWUNZFercIbJM3dY +O/I8tXwzBowbOdunSKvOjdq7CwzyUQw+nL0zm2hkZSkSEnssbJhi5BEYzSqXD0/Ag xUWo2vXqPbl/AP7A9rJZeBsjls9/mfr+mHe7EFmydgvf4AIzjvdZKiToBpURj39c7Q mhJJWAeqvY2vBq3whLVINqrdv0pnE67vdtHGy08rMoxJEMbtJxH46OtYQNMYmmOsd5 UqgOxhG09bFuq8oKAWLzfB8xq4twIxpBkGsIvD0RYupFYonKgbD5Y2BSqYLmQtW6Lt NuByUpgcET7qQ== Message-ID: <52f8c2d3-de0a-492e-89c0-f33487a97dc8@kernel.org> Date: Mon, 9 Nov 2026 22:42:07 +0100 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v10 08/11] dt-bindings: ufs: Add NXP S32N79 UFS host controller To: Larisa Ileana Grigore Cc: NXP S32 Linux Team , Alim Akhtar , Bart Van Assche , Bean Huo , Stanley Jhu , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "James E.J. Bottomley" , "Martin K. Petersen" , Sai Krishna Potthuri , Ajay Neeli , Manivannan Sadhasivam , Pedro Sousa , Adrian Hunter , Can Guo , Asutosh Das , imx@lists.linux.dev, linux-scsi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, clizzi@redhat.com, aruizrui@redhat.com, eballetb@redhat.com, echanude@redhat.com, Frank Li References: <20261103133215.1385823-1-larisa.grigore@oss.nxp.com> <20261103133215.1385823-9-larisa.grigore@oss.nxp.com> <20261104-holistic-loon-of-agreement-db7b8f@quoll> <4e82a4bf-e2db-4a3b-bebd-9f9c473817a3@kernel.org> <17b24b80-c3bb-40a1-ad12-06242ca09c22@oss.nxp.com> <0820de78-679a-45c2-baf1-2905490ea926@kernel.org> <02fb96e2-391f-4fc3-8d41-ab8364a9b07b@oss.nxp.com> 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+wsGPBBMBCgA5AhsDBgsJCAcDAgYVCAIJCgsE FgIDAQIeAQIXgBYhBJvQfg4MUfjVlne3VBuTQ307QWKbBQJp2mE8AAoJEBuTQ307QWKbeaIP /ihHTkTW4KsN/DQ945JJbyu5tI0J80Wue7QyyLPglyKfhgb5cLLNPpOC8cCIJsc7+W3i2P38 s2c1cOH6CYGE7E9ur3Vfme8NW2S2I/Z8VC7bZnzyS23wT17LrsdS/qCpx4o8U+pt/xdXDKph EGRYrIEmMpUWvyYzyYKGIe25FtaayIIKpq8eZYyFcp2f/sG5IkOW5uZzHPMPdcm87jU7fyuQ rAU2vx9r+ulUfQ/q9Z2roC/ode3l7t2pN7BCBCsUDp6JCrUyZrtT1e7EbA0ZRP3aOBNk2P2E DQOgJGjGdO5Yx2Y9LFtltu6JbsBJHi1syGRX3AtQYOMc4Y1WGoeZJmMlvKj2ZqqXNkcWi2DS IQEWB0uW6CqFsBBIMGDa+6OzdaVO/uAVXWDWml02Men3CILdI1MbVjoh8ECqYUY7OQ+JJvNN vnliuq5WM3Ghd3jg/LZZrxXjdIginRHFQCjIJYLKpLZWm1/iDFedcfzqRNYmTtqscdCNHW41 oT3Z7BmO9xwdjuwBS6nmS6JJwkbf5Ot2QR4pB/DRU7ZwjT1qHe+9r9gF32wXVQatHNGK/VVu sfwOnkdxCWkp/qb2gdQRmZh+SedStWshigH6sNfuHBloF/q+hjMRc8b2m326OZdrbSHwY1Sz vti8Hn7n8NjdHO9LKB7BIdjkA9DA5WsqOuVCzsFNBFVDXDQBEADNkrQYSREUL4D3Gws46JEo Z9HEQOKtkrwjrzlw/tCmqVzERRPvz2Xg8n7+HRCrgqnodIYoUh5WsU84N03KlLueMNsWLJBv BaubYN4JuJIdRr4dS4oyF1/fQAQPHh8Thpiz0SAZFx6iWKB7Qrz3OrGCjTPcW6eiOMheesVS 5hxietSmlin+SilmIAPZHx7n242u6kdHOh+/SyLImKn/dh9RzatVpUKbv34eP1wAGldWsRxb f3WP9pFNObSzI/Bo3kA89Xx2rO2roC+Gq4LeHvo7ptzcLcrqaHUAcZ3CgFG88CnA6z6lBZn0 WyewEcPOPdcUB2Q7D/NiUY+HDiV99rAYPJztjeTrBSTnHeSBPb+qn5ZZGQwIdUW9YegxWKvX XHTwB5eMzo/RB6vffwqcnHDoe0q7VgzRRZJwpi6aMIXLfeWZ5Wrwaw2zldFuO4Dt91pFzBSO IpeMtfgb/Pfe/a1WJ/GgaIRIBE+NUqckM+3zJHGmVPqJP/h2Iwv6nw8U+7Yyl6gUBLHFTg2h YnLFJI4Xjg+AX1hHFVKmvl3VBHIsBv0oDcsQWXqY+NaFahT0lRPjYtrTa1v3tem/JoFzZ4B0 p27K+qQCF2R96hVvuEyjzBmdq2esyE6zIqftdo4MOJho8uctOiWbwNNq2U9pPWmu4vXVFBYI GmpyNPYzRm0QPwARAQABwsF2BBgBCgAgAhsMFiEEm9B+DgxR+NWWd7dUG5NDfTtBYpsFAmna YUkACgkQG5NDfTtBYptX+BAApg32CkxwNucNEi8WfWA8oKkW0y8YDuY6ORMo9FWNGiT/OTy0 vyJrLocrpn86zwfjVp+eCrssPYh8eqJfnWqmYv6ACQtHPYzPZQ3mSo8H97Z01oUxITzCxpXm ZkLgPIqtDPcC2E3dPM/fVxcyowM8XsaMA9wcsaUYrta8toOq2b9tKcjleKMfMrm0gQ9u7wUc QbLkwj6TCLOwucb07GXzLTNF9PZmaDUpKAZjMjmrW+le+SFvQbhamx0rxLWPR0NWntXpbCn+ +ACch03p/JyTBVktxFsFyCt7pTPE1kEaeuXBTe/a2D9iQvRxRW19LvuO2e59/u1wYUiH/orz wbIC2S4dBsPAPihL3ztOU1yE86GPyQtSE0kU+/7snnLt4QGi6PChf3t5gnNjAzjUUovO8rgI c+5yN5heq5loYHgK6OQ9OlHzsPHO9e9MOQcKlFycs1pyijFGzDwdNUm/SchK8iWT2QApTx4A K9bCVaboTA2T77QYkRcRJYSsO1alGX0ome/hMLD1daXlkrNUp1HWa3K4iytLRXjCSIorWiGs n+q3krnpXu3TFkA8qtOFZMdnIiFuiq1yLT8hptsV5xh1TA2nsVvSYiaCr3q4s4BKjS/KrLDb qoxzw8ISjdUp4pA85vb6YLCmb39NgidD+7PmAr65lBNveIFynTgsja1rRQ4= In-Reply-To: <02fb96e2-391f-4fc3-8d41-ab8364a9b07b@oss.nxp.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 09/11/2026 21:47, Larisa Ileana Grigore wrote: > On 11/5/2026 8:28 PM, Krzysztof Kozlowski wrote: >> On 04/11/2026 10:41, Larisa Ileana Grigore wrote: >>> On 11/4/2026 10:40 AM, Krzysztof Kozlowski wrote: >>> v8: >>> https://lore.kernel.org/all/20261013103003.373156-1-larisa.grigore@oss.nxp.com/ >>> v9: >>> https://lore.kernel.org/all/20261024122533.3609180-1-larisa.grigore@oss.nxp.com/ >>> v10: >>> https://lore.kernel.org/all/20261103133215.1385823-1-larisa.grigore@oss.nxp.com >>> >>> Regarding your comments on v9: >>> >>> Frank's Reviewed-by was given publicly on v8 [1]. The series only looked >>> like a v1 because of the wrong version number. >>> The tag ordering was changed in v10 since the patch was changed. >>> The single 0 Hz OPP entry: as discussed on v8 [2][3], the clock rate is >>> set outside Linux and is not scaled. The OPP table lets the UFS core >> >> That is not the purpose of OPP table. OPP defines performance point. >> Performance point of 0 makes no sense. You cannot use Linux limitations >> as reason to add some DTS, because answer is simple: fix your Linux >> limitations. >> > > Hi Krzysztof, > > Thanks for the clarification. I understand that an OPP table is not > appropriate here. > > Existing platform DTs, such as Hi3660 and MT8195, define freq-table-hz > containing only <0 0> pairs. This allows the UFS core to manage clock > enable/disable without setting their rates. With freq-table-hz > deprecated, there seems to be a gap for this use case, beyond S32N. > Instead of passing 0, properties should be rather missing and that would be hint for Linux. Is there a difference between missing properties and some non-valid state (like freq=0)? Best regards, Krzysztof