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Tue, 19 May 2026 13:07:16 -0700 (PDT) X-Received: by 2002:a05:6123:128:b0:575:d035:8cb1 with SMTP id 71dfb90a1353d-5760c096bc8mr12568308e0c.13.1779221235900; Tue, 19 May 2026 13:07:15 -0700 (PDT) Received: from [192.168.1.29] ([178.197.219.94]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48feae166dasm131131645e9.9.2026.05.19.13.07.12 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 19 May 2026 13:07:14 -0700 (PDT) Message-ID: Date: Tue, 19 May 2026 22:07:11 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] dt-bindings: arm-smmu: Constrain clocks for newer Qualcomm variants To: Will Deacon , Robin Murphy , Joerg Roedel , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: catalin.marinas@arm.com, kernel-team@android.com, Shawn Guo References: <20260519074059.61405-2-krzysztof.kozlowski@oss.qualcomm.com> <177919680700.851863.10253442471292780349.b4-ty@kernel.org> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzysztof.kozlowski@oss.qualcomm.com; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTE5MDIwMSBTYWx0ZWRfXwnPZj1IynhyG h1NeYPAh47QkKezdbV74zKlPiH/hfYH5ZMooPzhNr+8YUHbQOhbINcBklJwhnGbkhgp698fWBHw kj7ByxjV+907WNwycdno8pKs1jbS2rHTXfGlOsl2AGQpMc/oA0IEZnvOhO0IM+FSGXjkVl+ds6P YhyAajKJcwjs44hEpoldMrYfRtqSpBsYiPTUAzIQ0AmT5AjERep/3fCnYWNp/PByx1w+s7gUiXD pB/cGicUWXOZ03NysRm08Xj2rVCJ/G8HJddGPdsJsnXDvzyPOfhc6NbA/O4EeXRCRsHd01waBe7 AxH3pY/6y9jDJf6+UFXxdK5Yz/uguPTmcPsFcy6LMrFoL8mWcOBsDYtt0DguYyGMHNNCtGTmenY ori4cSf5IBhlASP81FprotjiO5KO9uw+gh5HYZU+A0ro0NNn80oHz4qqXWr8790ze68k+pkNfax 7YRbvV5o89Xnw9Jl6jw== X-Authority-Analysis: v=2.4 cv=N9cZ0W9B c=1 sm=1 tr=0 ts=6a0cc2f5 cx=c_pps a=JIY1xp/sjQ9K5JH4t62bdg==:117 a=gOEeR9iKwsj33Yj5oN/cWg==:17 a=IkcTkHD0fZMA:10 a=NGcC8JguVDcA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=eoimf2acIAo5FJnRuUoq:22 a=-VkZa0qGcWT4bW_tupkA:9 a=QEXdDO2ut3YA:10 a=tNoRWFLymzeba-QzToBc:22 X-Proofpoint-GUID: JVW2IkylN-hfUwlRoVCdXRJ87Lv4qEll X-Proofpoint-ORIG-GUID: JVW2IkylN-hfUwlRoVCdXRJ87Lv4qEll X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-19_05,2026-05-18_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 adultscore=0 lowpriorityscore=0 suspectscore=0 malwarescore=0 spamscore=0 phishscore=0 clxscore=1015 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605130000 definitions=main-2605190201 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260519_130718_033389_6ED920BC X-CRM114-Status: GOOD ( 14.56 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 19/05/2026 17:23, Will Deacon wrote: > On Tue, 19 May 2026 09:41:00 +0200, Krzysztof Kozlowski wrote: >> Many of SMMU on Qualcomm SoCs come in two flavors using the same front >> compatible but a bit different fallback: >> >> 1. For application processor, usually without any controllable >> clocks, >> >> 2. For the Adreno GPU, with some controllable clock(s) and using >> additionally qcom,adreno-smmu fallback compatible. >> >> [...] > > !! Please note: this conflicted with the Glymur GPU bindings update. That > was trivial to fix, but I've also queued an update adding > "qcom,shikra-smmu-500" which you may want in your list of platforms > where clocks are disallowed? > Thanks, I will double check and send a followup if needed. Best regards, Krzysztof