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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-66298248bb4sm353697a12.16.2026.03.09.04.17.19 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 09 Mar 2026 04:17:22 -0700 (PDT) Message-ID: Date: Mon, 9 Mar 2026 12:17:18 +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: [PATCH 3/3] arm64: dts: qcom: glymur: Tie up the CX power domain to GCC To: Abel Vesa , Bjorn Andersson , Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Taniya Das , Konrad Dybcio , Maulik Shah , Dmitry Baryshkov , Jyothi Kumar Seerapu Cc: Krzysztof Kozlowski , Sibi Sankar , Pankaj Patil , Akhil P Oommen , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Jishnu Prakash , Raviteja Laggyshetty , Kamal Wadhwa , Qiang Yu , Manaf Meethalavalappu Pallikunhi References: <20260309-glymur-fix-gcc-cx-scaling-v1-0-f682c82f116f@oss.qualcomm.com> <20260309-glymur-fix-gcc-cx-scaling-v1-3-f682c82f116f@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260309-glymur-fix-gcc-cx-scaling-v1-3-f682c82f116f@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=U5qfzOru c=1 sm=1 tr=0 ts=69aeac44 cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=EUspDBNiAAAA:8 a=XFCnTzhwHPFgJtnojrQA:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 X-Proofpoint-ORIG-GUID: ZoTd9UvoRUEkBufgfK1vLPXxpgmG3daZ X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzA5MDEwNCBTYWx0ZWRfXwymK07++6hC0 0gQuT8xfhWIIgmQ4e9inPUpxqW9M4lvvNiqyTKNu+Y08206xDUb5ud95m8K9hO3OAQsU8NweXIf Fk48H7QaMTbwIk6HXDqPraWtDKDDuTtdGSJ+KjL6GVIqjqpknQ0Z46WXSi3+9CaaEb/o/C/9PIo xHVgzGFjZbmUA4TdwNZa0APsiJQkeXrqRkUqeuE2pI5IdS+fw6Vwt4MJCtQp91l3T/cbYhyk6mI CDZd9/St1B4puK+ObxcAw8HK0vlB26JxGxtfptjhSEwG9TixsNTWlrNJ6wmWYKk7aCz3l0hxqVz ZFgcMuB8PeTOfYJEL2sqbvcnf5Egpt2CdecLsqYodyeJPr+j+Yn3mm+mWhXFWKUfTVnw7nmRgbq q4K3L+gK/TVLA2qveK9PbKfRB1p8xE1w2xCf9f/FC3XI3PabYF6s8Emb43dWOOqptvEl1YPKnF7 KjV9GPcNUtRc7/CLYyg== X-Proofpoint-GUID: ZoTd9UvoRUEkBufgfK1vLPXxpgmG3daZ 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=2026-03-09_03,2026-03-06_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 adultscore=0 impostorscore=0 lowpriorityscore=0 phishscore=0 bulkscore=0 malwarescore=0 priorityscore=1501 spamscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603090104 On 3/9/26 11:06 AM, Abel Vesa wrote: > It has been concluded off-list that the Global Clock Controller needs to > scale the RPMh CX power domain, otherwise some of the subsystems might > crash or be unstable. So adding the RPMh CX power domain to the clock > controller which will result in all GDSCs being parented by CX. This way, > the vote from the consumers of each GDSC will trickle all the way to CX. > > So add the power domain and Make sure the required OPP is nominal. > > Fixes: 41b6e8db400c ("arm64: dts: qcom: Introduce Glymur base dtsi") > Signed-off-by: Abel Vesa > --- > arch/arm64/boot/dts/qcom/glymur.dtsi | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/arm64/boot/dts/qcom/glymur.dtsi b/arch/arm64/boot/dts/qcom/glymur.dtsi > index e269cec7942c..2d1ffbf53730 100644 > --- a/arch/arm64/boot/dts/qcom/glymur.dtsi > +++ b/arch/arm64/boot/dts/qcom/glymur.dtsi > @@ -764,6 +764,8 @@ gcc: clock-controller@100000 { > #clock-cells = <1>; > #reset-cells = <1>; > #power-domain-cells = <1>; > + power-domains = <&rpmhpd RPMHPD_CX>; > + required-opps = <&rpmhpd_opp_nom>; Let's not keep the system at close-to-full power all the time. Please drop required-opps. Konrad