Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752727AbdHNJwH (ORCPT ); Mon, 14 Aug 2017 05:52:07 -0400 Received: from mail-pg0-f52.google.com ([74.125.83.52]:34540 "EHLO mail-pg0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752594AbdHNJwF (ORCPT ); Mon, 14 Aug 2017 05:52:05 -0400 From: Guodong Xu To: xuwei5@hisilicon.com, robh+dt@kernel.org, mark.rutland@arm.com, catalin.marinas@arm.com, will.deacon@arm.com, keescook@chromium.org, anton@enomsg.org, ccross@android.com, tony.luck@intel.com Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Leo Yan , Kevin Wang Subject: [PATCH v3 01/10] arm64: dts: hi3660: enable idle states Date: Mon, 14 Aug 2017 17:50:40 +0800 Message-Id: <20170814095049.27701-2-guodong.xu@linaro.org> X-Mailer: git-send-email 2.10.2 In-Reply-To: <20170814095049.27701-1-guodong.xu@linaro.org> References: <20170814095049.27701-1-guodong.xu@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3830 Lines: 157 From: Leo Yan There are two clusters on the Hi3660, the first one is Cortex-A53 based and the other one is Cortex-A73 based. These two clusters have different idle states. Thanks to Daniel Lezcano's recent changes, the generic ARM cpuidle driver can now support several clusters with different idle states, thus supporting the big.Little architecture. In addition to the WFI idle state which is the default shallowest state for all ARM cpus, the Hi3660 supports the following states: - CA53 CPUs: - CPU_SLEEP: CPU power off state - CLUSTER_SLEEP_0: Cluster power off state - CA73 CPUs: - CPU_NAP: CPU retention state - CPU_SLEEP: CPU power off state - CLUSTER_SLEEP_1: Cluster power off state This patch adds the idle states description for the Hi3660 to the device tree. Cc: Kevin Wang Signed-off-by: Leo Yan Acked-by: Daniel Lezcano --- arch/arm64/boot/dts/hisilicon/hi3660.dtsi | 63 +++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) diff --git a/arch/arm64/boot/dts/hisilicon/hi3660.dtsi b/arch/arm64/boot/dts/hisilicon/hi3660.dtsi index c6a1961..8921310 100644 --- a/arch/arm64/boot/dts/hisilicon/hi3660.dtsi +++ b/arch/arm64/boot/dts/hisilicon/hi3660.dtsi @@ -58,6 +58,7 @@ device_type = "cpu"; reg = <0x0 0x0>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP_0>; }; cpu1: cpu@1 { @@ -65,6 +66,7 @@ device_type = "cpu"; reg = <0x0 0x1>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP_0>; }; cpu2: cpu@2 { @@ -72,6 +74,7 @@ device_type = "cpu"; reg = <0x0 0x2>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP_0>; }; cpu3: cpu@3 { @@ -79,6 +82,7 @@ device_type = "cpu"; reg = <0x0 0x3>; enable-method = "psci"; + cpu-idle-states = <&CPU_SLEEP &CLUSTER_SLEEP_0>; }; cpu4: cpu@100 { @@ -86,6 +90,11 @@ device_type = "cpu"; reg = <0x0 0x100>; enable-method = "psci"; + cpu-idle-states = < + &CPU_NAP + &CPU_SLEEP + &CLUSTER_SLEEP_1 + >; }; cpu5: cpu@101 { @@ -93,6 +102,11 @@ device_type = "cpu"; reg = <0x0 0x101>; enable-method = "psci"; + cpu-idle-states = < + &CPU_NAP + &CPU_SLEEP + &CLUSTER_SLEEP_1 + >; }; cpu6: cpu@102 { @@ -100,6 +114,11 @@ device_type = "cpu"; reg = <0x0 0x102>; enable-method = "psci"; + cpu-idle-states = < + &CPU_NAP + &CPU_SLEEP + &CLUSTER_SLEEP_1 + >; }; cpu7: cpu@103 { @@ -107,6 +126,50 @@ device_type = "cpu"; reg = <0x0 0x103>; enable-method = "psci"; + cpu-idle-states = < + &CPU_NAP + &CPU_SLEEP + &CLUSTER_SLEEP_1 + >; + }; + + idle-states { + entry-method = "psci"; + + CPU_NAP: cpu-nap { + compatible = "arm,idle-state"; + arm,psci-suspend-param = <0x0000001>; + entry-latency-us = <7>; + exit-latency-us = <2>; + min-residency-us = <15>; + }; + + CPU_SLEEP: cpu-sleep { + compatible = "arm,idle-state"; + local-timer-stop; + arm,psci-suspend-param = <0x0010000>; + entry-latency-us = <40>; + exit-latency-us = <70>; + min-residency-us = <3000>; + }; + + CLUSTER_SLEEP_0: cluster-sleep-0 { + compatible = "arm,idle-state"; + local-timer-stop; + arm,psci-suspend-param = <0x1010000>; + entry-latency-us = <500>; + exit-latency-us = <5000>; + min-residency-us = <20000>; + }; + + CLUSTER_SLEEP_1: cluster-sleep-1 { + compatible = "arm,idle-state"; + local-timer-stop; + arm,psci-suspend-param = <0x1010000>; + entry-latency-us = <1000>; + exit-latency-us = <5000>; + min-residency-us = <20000>; + }; }; }; -- 2.10.2