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Wed, 04 Nov 2026 23:58:56 -0800 (PST) Received: from [192.168.226.1] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c4d0e46876asm148250766b.57.2026.11.04.23.58.53 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 04 Nov 2026 23:58:55 -0800 (PST) Message-ID: <4a733192-37c5-459a-9fee-079f8f813b8b@oss.qualcomm.com> Date: Thu, 5 Nov 2026 08:58:52 +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] arm64: dts: qcom: sm8550: Add missing CPU7 3.36GHz OPP To: Val Packett , nacht@dxdmail.cc, Bjorn Andersson , Konrad Dybcio , Abel Vesa , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Aaron Kling , Dmitry Baryshkov Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20261104-sm8550-prime-3p36ghz-v1-1-c72630265379@dxdmail.cc> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMTA1MDAzMSBTYWx0ZWRfX7hNZa4087958 wBAh/G3Lx53zCu9LxfcJsRhln11ipSK2ReI874V5FN9TVXiStodZp8SInJwiqDX8VF2S8EiDikn MtoSvWK60tv8JhA9zkntNgs7A7sYFRccM6HaIQYWUPNSnywZbUIUlD9FCf5KqVAaATCDOn7+7KK UoFUrOkFRLzisECVG+fOCY7iz5Z+vtMc5GfmRA82D59/KcNsslOjD69z3cdY4476KgDG9bF4xTj nEbYyUELa4f/l3QzySejzVNv0O0e6WoalO2rlWIwOyvfYqX2J/B50LedrO3pmCLv2SApp6PvAG6 Yo2BWkR97HBUHVejuBrS0lnZP5hanFi/mYsuniXsoV+fvNJResKG2M19eer3OcgoH6H1UsH62Pq r3rqpJzkfEZWNtFrcKfH8n4ACgFQIxtu+XIwHJejuQpxmNBe7/o0MrfsC1sTgJpql0nxsYCKCsW DigcItVTM4Xt8gEWstg== X-Authority-Analysis: v=2.4 cv=KLLPn1Fo c=1 sm=1 tr=0 ts=6aec3742 cx=c_pps a=wEM5vcRIz55oU/E2lInRtA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=zJRp6_cAMcgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=EUspDBNiAAAA:8 a=9hb5SW-Fs4uWgb81FvgA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=OIgjcC2v60KrkQgK7BGD:22 X-Proofpoint-ORIG-GUID: 0psVfgN1ShSqcjaVoJ_yyYpDjXaFUhsa X-Proofpoint-GUID: 0psVfgN1ShSqcjaVoJ_yyYpDjXaFUhsa X-Proofpoint-Spam-Info: AW1haW4tMjYxMTA1MDAzMSBTYWx0ZWRfXxv6hsgqiJdtf T/82CGn5swniJ9IeNBGSiMSWZZeZbz+qpWaQZOn3GZObIcMHpIuSXJWfVhFoJ0l+77phGj2WnvG bThitqOo0dCmdCdFkBmDrwPvb/86A58= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-11-05_02,2026-11-04_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 adultscore=0 clxscore=1015 phishscore=0 bulkscore=0 spamscore=0 priorityscore=1501 impostorscore=0 suspectscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610300000 definitions=main-2611050031 On 11/4/26 10:24 PM, Val Packett wrote: > > On 11/4/26 4:41 PM, Nizat Mikayilli via B4 Relay wrote: >> From: Nizat Mikayilli >> >> The cpufreq LUT on the Samsung Galaxy Tab S9 Wi-Fi has a 3.36GHz boost >> entry for CPU7 without a matching OPP, so the frequency is dropped: >> >> cpu cpu7: Voltage update failed freq=3360000 >> cpu cpu7: failed to update OPP for freq=3360000 >> >> Fixes: 3f5dcc05cd33 ("arm64: dts: qcom: sm8550: add cpu OPP table with DDR, LLCC & L3 bandwidths") >> Signed-off-by: Nizat Mikayilli >> --- >>   arch/arm64/boot/dts/qcom/sm8550.dtsi | 5 +++++ >>   1 file changed, 5 insertions(+) >> >> diff --git a/arch/arm64/boot/dts/qcom/sm8550.dtsi b/arch/arm64/boot/dts/qcom/sm8550.dtsi >> index 03f6d40edea7..ed6e34ac8d56 100644 >> --- a/arch/arm64/boot/dts/qcom/sm8550.dtsi >> +++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi >> @@ -752,6 +752,11 @@ opp-3187200000 { >>               opp-hz = /bits/ 64 <3187200000>; >>               opp-peak-kBps = <(933000 * 16) (3686000 * 4) (1689600 * 32)>; >>           }; >> + >> +        opp-3360000000 { >> +            opp-hz = /bits/ 64 <3360000000>; >> +            opp-peak-kBps = <(933000 * 16) (3686000 * 4) (1689600 * 32)>; >> +        }; >>       }; >>         pmu-a510 { >> > This seems variant/speedbin dependent and does not apply to all sm8550. > > In fact a quick web search shows that your device has a "Snapdragon 8 Gen 2 for Galaxy" which is a customized chip for Smasnug. > > You should just add the OPP in your tablet's .dts I think. It's fine to have a superset of supported frequencies in this OPP table, the frequencies available are retrieved from the LUT exposed by the microcontroller anyway Reviewed-by: Konrad Dybcio Konrad