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[103.229.18.19]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-169a1becf08sm29748733c88.5.2026.10.12.00.23.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 12 Oct 2026 00:23:28 -0700 (PDT) From: Varadarajan Narayanan Date: Mon, 12 Oct 2026 12:53:05 +0530 Subject: [PATCH v7 05/11] arm64: dts: qcom: ipq5210: Add C3 CPU idle state Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261012-08-dts-v7-5-77bd3d68d850@oss.qualcomm.com> References: <20261012-08-dts-v7-0-77bd3d68d850@oss.qualcomm.com> In-Reply-To: <20261012-08-dts-v7-0-77bd3d68d850@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: Y8xj-OtVbcfKi2dIwrbq-2AmOH_psHJl X-Proofpoint-Spam-Info: AW1haW4tMjYxMDEyMDAyOSBTYWx0ZWRfX3hr+or0UVDUk IuIT779bo/2EsAozktVl2qcKEcluGG7rdB7HwR2vsQ7wFpg0dcAFk1kMI4FT9lfaVIlgFrzJau4 RCFS4NRTqPzjP8exO6jyVgKJbQ3GcXg= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDEyMDAyOSBTYWx0ZWRfX9Z4ivDluI2Ym v9+CSuGM/rt3pk/Dr/fnNhAJxxWqthXU2zY2er4yO8eTI0jWEkHnHP/z1fnjOnEo55imvXTVuu+ fV0AHxMBRcinGo6/duGfRK2IqhPlGvShkH+pSq6Ux01RthpE4SIUR4yk7we8wHvB5ZRkXCdju3n 2xV+7t6Zb0AK+TtGIHFDLdLf+jNUsV9PEtUzf/CfFmtaIeI7BPlIN2VTWdcR6t5+GP343zMU4Re k7gIFqRBt6d3xn7D3UMMrZZ1nKVOltOIGsbDSqKXLXcIAkR4hMUt/uFO8mWVQBIE4f1BArM0DCt Rxf8eeq6vI9Rb6BBPLw8FWZX0NjYzI69kuqnUYIwdl8wWWhDUO6QWJvF9b+jfGopnuOxAhu+WRJ oxHiyqKcvTBthQzkglJphYg1VNCV2FDnsx1B0OySeicj74mg986JzA7HTt40qI2WlkxRkVZmLYX jRL6J4eYO8gMxWiC3hw== X-Authority-Analysis: v=2.4 cv=AsJ7T+9P c=1 sm=1 tr=0 ts=6acc8af2 cx=c_pps a=bS7HVuBVfinNPG3f6cIo3Q==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=3WHJM1ZQz_JShphwDgj5:22 a=EUspDBNiAAAA:8 a=LX2C00z4I0v6K8_64uwA:9 a=QEXdDO2ut3YA:10 a=vBUdepa8ALXHeOFLBtFW:22 X-Proofpoint-GUID: Y8xj-OtVbcfKi2dIwrbq-2AmOH_psHJl 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=2026-10-12_02,2026-10-09_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 phishscore=0 lowpriorityscore=0 impostorscore=0 spamscore=0 adultscore=0 priorityscore=1501 clxscore=1015 bulkscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610120029 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 0c03295f61b0..d28d68a10958 100644 --- a/arch/arm64/boot/dts/qcom/ipq5210.dtsi +++ b/arch/arm64/boot/dts/qcom/ipq5210.dtsi @@ -36,6 +36,7 @@ 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>; @@ -47,6 +48,7 @@ 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>; @@ -58,6 +60,7 @@ 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>; @@ -69,6 +72,7 @@ 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>; @@ -80,6 +84,20 @@ l2_0: l2-cache { cache-level = <2>; cache-unified; }; + + idle-states { + entry-method = "psci"; + + cpu_sleep_0: cpu-sleep-c3 { /* C3 */ + 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