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Wed, 14 Oct 2026 07:33:37 -0700 (PDT) X-Received: by 2002:a05:6122:3b10:b0:5e9:484a:3499 with SMTP id 71dfb90a1353d-5e9484a38e0mr2697064e0c.2.1791988416956; Wed, 14 Oct 2026 07:33:36 -0700 (PDT) Received: from [192.168.226.26] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c356f981cd3sm327141866b.83.2026.10.14.07.33.32 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 14 Oct 2026 07:33:36 -0700 (PDT) Message-ID: <0d448a75-6fc6-4f38-a871-7a5338ee31ff@oss.qualcomm.com> Date: Wed, 14 Oct 2026 16:33:32 +0200 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: [PATCH DNM RFC 15/16] arm64: dts: qcom: sm8650: Drop required-opps To: Dmitry Baryshkov , Konrad Dybcio Cc: Stephen Boyd , Brian Masney , Jerome Brunet , Viresh Kumar , Nishanth Menon , "Rafael J. Wysocki" , Pavel Machek , Len Brown , Greg Kroah-Hartman , Danilo Krummrich , Johan Hovold , Ulf Hansson , Bjorn Andersson , Abel Vesa , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Neil Armstrong , Mike Tipton , Taniya Das , linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, driver-core@lists.linux.dev, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org References: <20261014-topic-qc_clk_dvfs-v1-0-3041b788e9f7@oss.qualcomm.com> <20261014-topic-qc_clk_dvfs-v1-15-3041b788e9f7@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: cAeA8hGOF-taOa1O7zDi7VqsPCZyBqnn X-Proofpoint-Spam-Info: AW1haW4tMjYxMDE0MDA1NyBTYWx0ZWRfX0Z/DlB7z8pGn Kx+6DXO3N/dXm/XdjA2Msd41s9jBG2rqOm13ZTe63kBzMTgRXHLtMyEZfdyB2PvPdJFR0Oa++of sHYjUgp7YQOJcYyfiKfq28+o9hZu8F4= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDE0MDA1NyBTYWx0ZWRfX5K0KcQJPRysC teklJomXL51X0mYV/twQbEfONi/rwS6hvWEc3GEiST07EcrM6mTYh2qkM2+3w+TA3ockTVHxX+B KAkHVpd4mdMMiImUfRuVIcwPVWTeye+gdaiz/3Qh38e8YUfaZ0DUMyVO3bIsGslUBQm0hGJYb0B yTZxS2fesctfrShu4d1NdmmTLwNsjmpa+uc9UE8J3i2DG6abbc7PtyvJshT5EqnBmyivx3yVc+q 2FedP2nhTyFZbsSsmAfCRpcyt8K85pOR4kiCi6nI66KKPKNdsVFVB5zgmDMbp412xqJxmyfiZrA qEK4bBQCbrM3YqOdA7wb9EkCKjxcOqCbLeHijNzlZ8bkkKFescqMBowLIgbz53gsmuUQ4jFZMe+ WFfUfEUzJ40HrOYkn/0hhj+1qghC/ap2n/jsNZq89RHElLW4XSYAlSPDlfbwsCIfwucZCg6AVnc nnZ813az1H2vNkWFv/A== X-Authority-Analysis: v=2.4 cv=fJ6sTpae c=1 sm=1 tr=0 ts=6acf92c3 cx=c_pps a=5HAIKLe1ejAbszaTRHs9Ug==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=EUspDBNiAAAA:8 a=eDuGKJUQ3iVb9g9TkgsA:9 a=QEXdDO2ut3YA:10 a=gYDTvv6II1OnSo0itH1n:22 X-Proofpoint-GUID: cAeA8hGOF-taOa1O7zDi7VqsPCZyBqnn X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-13_01,2026-10-09_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 spamscore=0 lowpriorityscore=0 malwarescore=0 suspectscore=0 adultscore=0 impostorscore=0 phishscore=0 bulkscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610140057 On 10/14/26 4:23 PM, Dmitry Baryshkov wrote: > On Wed, Oct 14, 2026 at 02:19:15PM +0200, Konrad Dybcio wrote: >> From: Konrad Dybcio >> >> Now that the clock controllers take care of their power requirements, >> drop the required-opps that were only there because they previously >> hadn't. >> >> Assisted-by: LLM >> Signed-off-by: Konrad Dybcio >> --- [...] > Can we then drop these OPP tables, which only have a HZ entry? I suppose so. Unless they should also have interconnect values? (depends on whether these can be inferred from the bus freq for all protocols) > >> @@ -5200,7 +5178,6 @@ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>, >> iommus = <&apps_smmu 0x40 0>; >> >> power-domains = <&gcc USB30_PRIM_GDSC>; >> - required-opps = <&rpmhpd_opp_nom>; > > How do we ensure that we can access device registers? Is there a clock > (?) which now casts a vote, letting us access USB regs? Yes, the device driver turns on the GDSC and enables the clocks and the clk-dvfs layer ensures all power votes are in place! Konrad