From patchwork Fri Jun 21 09:16:02 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 11008945 X-Patchwork-Delegate: horms@verge.net.au Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7E98114E5 for ; Fri, 21 Jun 2019 09:17:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6E586289DA for ; Fri, 21 Jun 2019 09:17:00 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 627E028A01; Fri, 21 Jun 2019 09:17:00 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E7FBC289DA for ; Fri, 21 Jun 2019 09:16:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726437AbfFUJQ7 (ORCPT ); Fri, 21 Jun 2019 05:16:59 -0400 Received: from kirsty.vergenet.net ([202.4.237.240]:34780 "EHLO kirsty.vergenet.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726210AbfFUJQ7 (ORCPT ); Fri, 21 Jun 2019 05:16:59 -0400 Received: from reginn.horms.nl (watermunt.horms.nl [80.127.179.77]) by kirsty.vergenet.net (Postfix) with ESMTPA id A509A25BE5E; Fri, 21 Jun 2019 19:16:37 +1000 (AEST) Received: by reginn.horms.nl (Postfix, from userid 7100) id EA7E9942F86; Fri, 21 Jun 2019 11:16:33 +0200 (CEST) From: Simon Horman To: linux-renesas-soc@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, Magnus Damm , Dien Pham , An Huynh , Takeshi Kihara , Yoshihiro Kaneko , Simon Horman Subject: [PATCH 24/53] arm64: dts: renesas: r8a77965: Create thermal zone to support IPA Date: Fri, 21 Jun 2019 11:16:02 +0200 Message-Id: <7ec67eddfb8e1657d151bfb3eb69c6d3a58ffe06.1561107232.git.horms+renesas@verge.net.au> X-Mailer: git-send-email 2.11.0 In-Reply-To: References: Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Dien Pham Setup a thermal zone driven by SoC temperature sensor. Create passive trip points and bind them to CPUFreq cooling device that supports power extension. In R-Car Gen3, IPA is supported for only one channel (on H3/M3/M3N SoCs, it is channel THS3). Reason: Currently, IPA controls base on only CPU temperature. And only one thermal channel is assembled closest CPU cores is selected as target of IPA. If other channels are used, IPA controlling is not properly. The A57 cooling device supports 5 cooling states which can be categorised as follows: 0 & 1) boost (clocking up) 2) default 3 & 4) cooling (clocking down) Currently the thermal framework assumes that the default is the minimum, or in other words there is no provision for handling boost states. So this patch only describes the upper 3 states, default and cooling. A single cooling device is described for all A57 CPUs and a separate cooling device is described for all A53 CPUs. This reflects that physically there is only one cooling device present for each type of CPU. This patch improves on an earlier version by: * Omitting cooling-max-level and cooling-min-level properties which are no longer present in mainline as of v4.17 * Removing an unused trip-point0 node sub-property from the trips property. * Using cooling-device indexes such that maximum refers to maximum cooling rather than the inverse. * Defers adding dynamic-power-coefficient properties to a separate patch as these are properties of the CPU. The long signed-off by chain below reflects many revisions, mainly internal, that this patch has been through. Signed-off-by: Dien Pham Signed-off-by: An Huynh Signed-off-by: Takeshi Kihara Signed-off-by: Yoshihiro Kaneko Signed-off-by: Simon Horman --- arch/arm64/boot/dts/renesas/r8a77965.dtsi | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/arch/arm64/boot/dts/renesas/r8a77965.dtsi b/arch/arm64/boot/dts/renesas/r8a77965.dtsi index 814ed14b092b..d4aefe2dee94 100644 --- a/arch/arm64/boot/dts/renesas/r8a77965.dtsi +++ b/arch/arm64/boot/dts/renesas/r8a77965.dtsi @@ -111,6 +111,7 @@ power-domains = <&sysc R8A77965_PD_CA57_CPU0>; next-level-cache = <&L2_CA57>; enable-method = "psci"; + #cooling-cells = <2>; clocks = <&cpg CPG_CORE R8A77965_CLK_Z>; operating-points-v2 = <&cluster0_opp>; }; @@ -2530,6 +2531,7 @@ polling-delay-passive = <250>; polling-delay = <1000>; thermal-sensors = <&tsc 0>; + sustainable-power = <2439>; trips { sensor1_crit: sensor1-crit { @@ -2544,6 +2546,7 @@ polling-delay-passive = <250>; polling-delay = <1000>; thermal-sensors = <&tsc 1>; + sustainable-power = <2439>; trips { sensor2_crit: sensor2-crit { @@ -2558,14 +2561,30 @@ polling-delay-passive = <250>; polling-delay = <1000>; thermal-sensors = <&tsc 2>; + sustainable-power = <2439>; trips { + target: trip-point1 { + /* miliCelsius */ + temperature = <100000>; + hysteresis = <1000>; + type = "passive"; + }; + sensor3_crit: sensor3-crit { temperature = <120000>; hysteresis = <1000>; type = "critical"; }; }; + + cooling-maps { + map0 { + trip = <&target>; + cooling-device = <&a57_0 2 4>; + contribution = <1024>; + }; + }; }; };