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[103.229.18.19]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3751fe2ff5dsm21856793eec.5.2026.11.11.20.36.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Nov 2026 20:36:47 -0800 (PST) From: Varadarajan Narayanan Date: Thu, 12 Nov 2026 10:06:24 +0530 Subject: [PATCH v9 05/11] arm64: dts: qcom: ipq5210: Add C3 CPU idle state 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 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261112-08-dts-v9-5-c34de4f78fbb@oss.qualcomm.com> References: <20261112-08-dts-v9-0-c34de4f78fbb@oss.qualcomm.com> In-Reply-To: <20261112-08-dts-v9-0-c34de4f78fbb@oss.qualcomm.com> To: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Abel Vesa Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Varadarajan Narayanan X-Mailer: b4 0.14.3 X-Proofpoint-ORIG-GUID: 2AarJZYYbGY-AlOuDxKQgUJY3lZqujrv X-Authority-Analysis: v=2.4 cv=OYANnRTY c=1 sm=1 tr=0 ts=6af54261 cx=c_pps a=wEP8DlPgTf/vqF+yE6f9lg==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=IkcTkHD0fZMA:10 a=zJRp6_cAMcgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=EUspDBNiAAAA:8 a=NgvM7Uoa01S4sPDBfAEA:9 a=QEXdDO2ut3YA:10 a=bBxd6f-gb0O0v-kibOvt:22 X-Proofpoint-GUID: 2AarJZYYbGY-AlOuDxKQgUJY3lZqujrv X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMTEyMDAxOCBTYWx0ZWRfX/01uoHTSeVef HNANGmResTCFZIjP0fJ5hw2riBmonifsIhGutuUze9KuAcSf2sRzlKnpnswjBIAJayqYc4qmNVr SN0KUDwMY3e7khGEPpGYG3swwcQ97lxrKgJgJBZXU0EbJbLOhjgFtzACq04eOwi+93EeYpAZb6L mRNvVmtdquOsJchUsDfYlMqGOTw6kaNHE7918M5FBittnGtKaDtGOFzCubYGxMtF33xLtvdUDgv q2O/S/R1qnPb8JjWzY+lUhhBecDV+09Z7r7A/roBf8T5NMdfZ9zMxJUz9rpfrxYmEEb9Qxw9VyE LJwzASl2d8c5fqdgVAhO2hjtzz0EXlNDLGxF/SGW/ZaEOQKHBd9YgbctCuIyzXZKvt/jC4I4PNl 8sn5DcnW9LV2oB4bUBmwdgZGFbUdoiVIi/RX3chV/mg/f1hPs1HCDXlm0TqlSXAWMCqCo5vnhzZ dvQ6sDTO6BcPu2tJzmA== X-Proofpoint-Spam-Info: AW1haW4tMjYxMTEyMDAxOCBTYWx0ZWRfX3OmVFIWkNrtT pI8j/iIQb+gEzGSNBy+OFR4cuz4G8vohIAvPOOW6nEVyB9HmM6Nvi+/6NZXhIk8u2HDttMX7vps i78hdgNbEbS79qay8fRFe1Fgzdpby2g= 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=2026-11-12_01,2026-11-11_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 impostorscore=0 adultscore=0 clxscore=1015 lowpriorityscore=0 phishscore=0 priorityscore=1501 suspectscore=0 bulkscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2611040001 definitions=main-2611120018 Add the PSCI-backed C3 idle state for the Cortex-A53 CPUs and wire it to all CPU nodes. Signed-off-by: Varadarajan Narayanan --- arch/arm64/boot/dts/qcom/ipq5210.dtsi | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/ipq5210.dtsi b/arch/arm64/boot/dts/qcom/ipq5210.dtsi index 504364ca031c..f3d688fded80 100644 --- a/arch/arm64/boot/dts/qcom/ipq5210.dtsi +++ b/arch/arm64/boot/dts/qcom/ipq5210.dtsi @@ -49,6 +49,7 @@ cpu0: cpu@0 { compatible = "arm,cortex-a53"; reg = <0x0>; enable-method = "psci"; + cpu-idle-states = <&cpu_sleep_0>; next-level-cache = <&l2_0>; #cooling-cells = <2>; clocks = <&apcs_glb APCS_ALIAS0_CORE_CLK>; @@ -60,6 +61,7 @@ cpu1: cpu@1 { compatible = "arm,cortex-a53"; reg = <0x1>; enable-method = "psci"; + cpu-idle-states = <&cpu_sleep_0>; next-level-cache = <&l2_0>; #cooling-cells = <2>; clocks = <&apcs_glb APCS_ALIAS0_CORE_CLK>; @@ -71,6 +73,7 @@ cpu2: cpu@2 { compatible = "arm,cortex-a53"; reg = <0x2>; enable-method = "psci"; + cpu-idle-states = <&cpu_sleep_0>; next-level-cache = <&l2_0>; #cooling-cells = <2>; clocks = <&apcs_glb APCS_ALIAS0_CORE_CLK>; @@ -82,6 +85,7 @@ cpu3: cpu@3 { compatible = "arm,cortex-a53"; reg = <0x3>; enable-method = "psci"; + cpu-idle-states = <&cpu_sleep_0>; next-level-cache = <&l2_0>; #cooling-cells = <2>; clocks = <&apcs_glb APCS_ALIAS0_CORE_CLK>; @@ -93,6 +97,20 @@ l2_0: l2-cache { cache-level = <2>; cache-unified; }; + + idle-states { + entry-method = "psci"; + + cpu_sleep_0: cpu-sleep-0 { + compatible = "arm,idle-state"; + idle-state-name = "power-down"; + arm,psci-suspend-param = <0x40000003>; + entry-latency-us = <181>; + exit-latency-us = <149>; + min-residency-us = <703>; + local-timer-stop; + }; + }; }; firmware { -- 2.34.1