From patchwork Mon Dec 7 18:38:01 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Jon Medhurst (Tixy)" X-Patchwork-Id: 7789171 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 3832C9F349 for ; Mon, 7 Dec 2015 18:40:33 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3F4FA2053C for ; Mon, 7 Dec 2015 18:40:32 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2A94F2052C for ; Mon, 7 Dec 2015 18:40:31 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1a60gA-0007Ye-HE; Mon, 07 Dec 2015 18:38:30 +0000 Received: from smarthost03b.mail.zen.net.uk ([212.23.1.21]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1a60g7-0007WT-8u for linux-arm-kernel@lists.infradead.org; Mon, 07 Dec 2015 18:38:28 +0000 Received: from [82.69.122.217] (helo=linaro1) by smarthost03b.mail.zen.net.uk with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1a60fi-0008N8-O0; Mon, 07 Dec 2015 18:38:02 +0000 Message-ID: <1449513481.3012.16.camel@linaro.org> Subject: [PATCH v2] arm64: dts: juno: Add idle-states to device tree From: "Jon Medhurst (Tixy)" To: arm@kernel.org, Catalin Marinas , Lorenzo Pieralisi Date: Mon, 07 Dec 2015 18:38:01 +0000 X-Mailer: Evolution 3.12.9-1+b1 Mime-Version: 1.0 X-Originating-smarthost03b-IP: [82.69.122.217] X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151207_103827_510123_B4DF9AD9 X-CRM114-Status: UNSURE ( 5.45 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -1.2 (-) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Punit Agrawal , Liviu Dudau , linux-arm-kernel@lists.infradead.org, Sudeep Holla Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The latency times were suggested by Lorenzo Pieralisi after some ad hoc testing. Signed-off-by: Jon Medhurst Acked-by: Lorenzo Pieralisi --- Lorenzo, are you happy with my statement that you did 'ad hoc testing' to derive the figures or is there something more specific that's worth adding? arch/arm64/boot/dts/arm/juno-r1.dts | 28 ++++++++++++++++++++++++++++ arch/arm64/boot/dts/arm/juno.dts | 28 ++++++++++++++++++++++++++++ 2 files changed, 56 insertions(+) diff --git a/arch/arm64/boot/dts/arm/juno-r1.dts b/arch/arm64/boot/dts/arm/juno-r1.dts index 93bc3d7..8826f83 100644 --- a/arch/arm64/boot/dts/arm/juno-r1.dts +++ b/arch/arm64/boot/dts/arm/juno-r1.dts @@ -60,6 +60,28 @@ }; }; + idle-states { + entry-method = "arm,psci"; + + CPU_SLEEP_0: cpu-sleep-0 { + compatible = "arm,idle-state"; + arm,psci-suspend-param = <0x0010000>; + local-timer-stop; + entry-latency-us = <300>; + exit-latency-us = <1200>; + min-residency-us = <2000>; + }; + + CLUSTER_SLEEP_0: cluster-sleep-0 { + compatible = "arm,idle-state"; + arm,psci-suspend-param = <0x1010000>; + local-timer-stop; + entry-latency-us = <300>; + exit-latency-us = <1200>; + min-residency-us = <2500>; + }; + }; + A57_0: cpu@0 { compatible = "arm,cortex-a57","arm,armv8"; reg = <0x0 0x0>; @@ -67,6 +89,7 @@ enable-method = "psci"; next-level-cache = <&A57_L2>; clocks = <&scpi_dvfs 0>; + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>; }; A57_1: cpu@1 { @@ -76,6 +99,7 @@ enable-method = "psci"; next-level-cache = <&A57_L2>; clocks = <&scpi_dvfs 0>; + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>; }; A53_0: cpu@100 { @@ -85,6 +109,7 @@ enable-method = "psci"; next-level-cache = <&A53_L2>; clocks = <&scpi_dvfs 1>; + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>; }; A53_1: cpu@101 { @@ -94,6 +119,7 @@ enable-method = "psci"; next-level-cache = <&A53_L2>; clocks = <&scpi_dvfs 1>; + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>; }; A53_2: cpu@102 { @@ -103,6 +129,7 @@ enable-method = "psci"; next-level-cache = <&A53_L2>; clocks = <&scpi_dvfs 1>; + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>; }; A53_3: cpu@103 { @@ -112,6 +139,7 @@ enable-method = "psci"; next-level-cache = <&A53_L2>; clocks = <&scpi_dvfs 1>; + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>; }; A57_L2: l2-cache0 { diff --git a/arch/arm64/boot/dts/arm/juno.dts b/arch/arm64/boot/dts/arm/juno.dts index 53442b5..dcfcf15 100644 --- a/arch/arm64/boot/dts/arm/juno.dts +++ b/arch/arm64/boot/dts/arm/juno.dts @@ -60,6 +60,28 @@ }; }; + idle-states { + entry-method = "arm,psci"; + + CPU_SLEEP_0: cpu-sleep-0 { + compatible = "arm,idle-state"; + arm,psci-suspend-param = <0x0010000>; + local-timer-stop; + entry-latency-us = <300>; + exit-latency-us = <1200>; + min-residency-us = <2000>; + }; + + CLUSTER_SLEEP_0: cluster-sleep-0 { + compatible = "arm,idle-state"; + arm,psci-suspend-param = <0x1010000>; + local-timer-stop; + entry-latency-us = <300>; + exit-latency-us = <1200>; + min-residency-us = <2500>; + }; + }; + A57_0: cpu@0 { compatible = "arm,cortex-a57","arm,armv8"; reg = <0x0 0x0>; @@ -67,6 +89,7 @@ enable-method = "psci"; next-level-cache = <&A57_L2>; clocks = <&scpi_dvfs 0>; + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>; }; A57_1: cpu@1 { @@ -76,6 +99,7 @@ enable-method = "psci"; next-level-cache = <&A57_L2>; clocks = <&scpi_dvfs 0>; + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>; }; A53_0: cpu@100 { @@ -85,6 +109,7 @@ enable-method = "psci"; next-level-cache = <&A53_L2>; clocks = <&scpi_dvfs 1>; + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>; }; A53_1: cpu@101 { @@ -94,6 +119,7 @@ enable-method = "psci"; next-level-cache = <&A53_L2>; clocks = <&scpi_dvfs 1>; + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>; }; A53_2: cpu@102 { @@ -103,6 +129,7 @@ enable-method = "psci"; next-level-cache = <&A53_L2>; clocks = <&scpi_dvfs 1>; + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>; }; A53_3: cpu@103 { @@ -112,6 +139,7 @@ enable-method = "psci"; next-level-cache = <&A53_L2>; clocks = <&scpi_dvfs 1>; + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>; }; A57_L2: l2-cache0 {