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Mon, 03 Aug 2026 03:33:06 -0700 (PDT) X-Received: by 2002:a05:6a21:648b:b0:3c3:9595:57ef with SMTP id adf61e73a8af0-3c92a5bc4f9mr9402262637.31.1785753186241; Mon, 03 Aug 2026 03:33:06 -0700 (PDT) Received: from [10.218.15.172] ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-13fab4e44bcsm43148007c88.12.2026.08.03.03.33.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 03 Aug 2026 03:33:05 -0700 (PDT) Message-ID: Date: Mon, 3 Aug 2026 16:03:00 +0530 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 7/7] arm64: dts: qcom: shikra: Add CPU idle states To: Konrad Dybcio , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Thomas Gleixner , Shawn Guo , Marc Zyngier Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260713-b4-shikra_lpm_addition-v1-0-3d858df2cbbf@oss.qualcomm.com> <20260713-b4-shikra_lpm_addition-v1-7-3d858df2cbbf@oss.qualcomm.com> <5756164d-2e42-4eb1-ab18-69c6f784b789@oss.qualcomm.com> Content-Language: en-US From: Sneh Mankad In-Reply-To: <5756164d-2e42-4eb1-ab18-69c6f784b789@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: Tnl4V0O-Wzr4LUaqR7Sv9JRTabjVDnL4 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODAzMDA5NCBTYWx0ZWRfXyXcfsfaOjavx fYuiZSwrwpsA8ljdbDV4eOW7IZ9U+rFFlaZIQ8b3vXtERifJ0bw1dRmnEBINxY3v8AzFzz+ru7q nIMgduyIBZfGDHdQTBfqpN7rn3nz0UotpQAgr2fInyJTpU8R+bDhigjN/18EjAVmdK9cFYz9e7c tAJoAavCKeP5Wg4bQVLthdaSmayOJ7BMGu/60LKZrXbDUE+0gSkiPKjmVo6ruM4bPNaW95HBZTA XYFZRmSyM32OEpxufej9hNep1Lsk1MoMMJj6cs0aDRPyNLDGhVgBJi5F1GjNKr5pZQZ03dxQj2s CfnZKhmljJqLG5BJjrW5EwYFmPVjorbpGvz6Aao5O2KmSMc7Glxmyae+cB1x0cNpCbjgkwnHckx QupvmMYeO2nj9vizpZxDgopAZL18QCe+39j0hN7I2RJfPXPxsLohM4oKXSNTMogYW2wlk3pZDus gdReGAxFWOGKugibrRg== X-Proofpoint-ORIG-GUID: Tnl4V0O-Wzr4LUaqR7Sv9JRTabjVDnL4 X-Proofpoint-Spam-Info: AW1haW4tMjYwODAzMDA5NCBTYWx0ZWRfX41DBa9MGJn6Q d3y7K0HqYfJ8qKzCAI5x1tUh7X+6jN+s6treoOe0DYXJTzmM4g6AutaHwunQwc8bLasSLiOfDYG UhavumTck37aZgwgvC2udA1uNhEx14Q= X-Authority-Analysis: v=2.4 cv=UIjt2ify c=1 sm=1 tr=0 ts=6a706e63 cx=c_pps a=rz3CxIlbcmazkYymdCej/Q==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=EUspDBNiAAAA:8 a=eFh9wa1xyOHWc3L4cLUA:9 a=QEXdDO2ut3YA:10 a=bFCP_H2QrGi7Okbo017w:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-02_06,2026-07-30_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 clxscore=1015 priorityscore=1501 lowpriorityscore=0 impostorscore=0 bulkscore=0 adultscore=0 spamscore=0 suspectscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608030094 On 15-Jul-26 3:32 PM, Konrad Dybcio wrote: > On 7/13/26 12:25 PM, Sneh Mankad wrote: >> Add idle states for the CPUs as well as the whole cluster. This enables >> deeper-than-WFI cpuidle. >> >> Add MPM under cluster_pd power domain. >> >> Signed-off-by: Sneh Mankad >> --- > > [...] > >> + domain_idle_states: domain-idle-states { >> + cluster_sleep_apss_off: cluster-sleep-0 { >> + compatible = "domain-idle-state"; >> + idle-state-name = "cluster-power-down"; >> + arm,psci-suspend-param = <0x41000044>; >> + entry-latency-us = <2752>; >> + exit-latency-us = <3038>; >> + min-residency-us = <6118>; >> + }; >> + }; > > Is this really the deepest state available on Shikra? Yes, this is the deepest idle state for Shikra. It does involve handshaking with RPM to allow SoC level idle states to enter. Thanks, Sneh`