From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 92F42D0C603 for ; Fri, 25 Oct 2024 12:29:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=aCIj/MWCL/OHRFXBYw2HpFGwyancRiHr0k6BmgY24AA=; b=IrSH3U03z8it/Z z3zyJB0GGT/S4qjmdq9jQ9y8HTxk/LtkkKVB/RPAmUP+y7Udy9dSCrUlDNAwzVp2VabXWOIGSLZhQ mceR4bbADrep7HfAjuHJyITy9e4PK5SRWfjyYCrXt12qNfhhHR5G5jIyXO7tE8qhBBdsY41kxcIgu vfG63POWtmQGja3AcqVVBv7NVQI4B55G5H6KycTMhqsCrAjpbIK7KxH6GLL6lDrcEUrFg9tT3MOBo ss45Hb5+Z0sxEOudp62h12TpADuSdXZ56e/Kybdu4NYE+ub6RQzKmbwbbiOOyy54Q/hm2ofRgARoR qNaZIDzLmKz9sWY3z/1w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t4JRY-00000003eUm-3ZCZ; Fri, 25 Oct 2024 12:29:28 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t4JPw-00000003eGN-1Sb9; Fri, 25 Oct 2024 12:27:49 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 4AF6C339; Fri, 25 Oct 2024 05:28:17 -0700 (PDT) Received: from donnerap.manchester.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.121.207.14]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id ADC9A3F71E; Fri, 25 Oct 2024 05:27:42 -0700 (PDT) Date: Fri, 25 Oct 2024 13:27:39 +0100 From: Andre Przywara To: Cody Eksal Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-usb@vger.kernel.org, Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Parthiban , Yangtao Li , Florian Fainelli , Vinod Koul , Linus Walleij , Thierry Reding , Krzysztof Kozlowski , Maxime Ripard , Greg Kroah-Hartman , Yangtao Li , Viresh Kumar , Nishanth Menon , Stephen Boyd , Kishon Vijay Abraham I , "Rafael J. Wysocki" , Shuosheng Huang Subject: Re: [PATCH 13/13] arm64: dts: allwinner: a100: Add CPU Operating Performance Points table Message-ID: <20241025132739.3d0f116d@donnerap.manchester.arm.com> In-Reply-To: <20241024170540.2721307-14-masterr3c0rd@epochal.quest> References: <20241024170540.2721307-1-masterr3c0rd@epochal.quest> <20241024170540.2721307-14-masterr3c0rd@epochal.quest> Organization: ARM X-Mailer: Claws Mail 3.18.0 (GTK+ 2.24.32; aarch64-unknown-linux-gnu) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241025_052748_535059_0DBCF661 X-CRM114-Status: GOOD ( 19.70 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org On Thu, 24 Oct 2024 14:05:31 -0300 Cody Eksal wrote: > From: Shuosheng Huang > > Add an Operating Performance Points table for the CPU cores to > enable Dynamic Voltage & Frequency Scaling on the A100. > > Signed-off-by: Shuosheng Huang > [masterr3c0rd@epochal.quest: fix typos in -cpu-opp, use compatible] > Signed-off-by: Cody Eksal > --- > .../allwinner/sun50i-a100-allwinner-perf1.dts | 5 ++ > .../dts/allwinner/sun50i-a100-cpu-opp.dtsi | 90 +++++++++++++++++++ > .../arm64/boot/dts/allwinner/sun50i-a100.dtsi | 8 ++ > 3 files changed, 103 insertions(+) > create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-a100-cpu-opp.dtsi > > diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a100-allwinner-perf1.dts b/arch/arm64/boot/dts/allwinner/sun50i-a100-allwinner-perf1.dts > index 29e9d24da8b6..99b1b2f7b92a 100644 > --- a/arch/arm64/boot/dts/allwinner/sun50i-a100-allwinner-perf1.dts > +++ b/arch/arm64/boot/dts/allwinner/sun50i-a100-allwinner-perf1.dts > @@ -6,6 +6,7 @@ > /dts-v1/; > > #include "sun50i-a100.dtsi" > +#include "sun50i-a100-cpu-opp.dtsi" > > #include > > @@ -67,6 +68,10 @@ &usb_otg { > status = "okay"; > }; > > +&cpu0 { > + cpu-supply = <®_dcdc2>; > +}; > + > &pio { > vcc-pb-supply = <®_dcdc1>; > vcc-pc-supply = <®_eldo1>; > diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a100-cpu-opp.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a100-cpu-opp.dtsi > new file mode 100644 > index 000000000000..eeb8d20f3fb4 > --- /dev/null > +++ b/arch/arm64/boot/dts/allwinner/sun50i-a100-cpu-opp.dtsi > @@ -0,0 +1,90 @@ > +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) > +// Copyright (c) 2020 Yangtao Li > +// Copyright (c) 2020 ShuoSheng Huang > + > +/ { > + cpu_opp_table: cpu-opp-table { > + compatible = "allwinner,sun50i-a100-operating-points"; > + nvmem-cells = <&cpu_speed_grade>; > + opp-shared; > + > + opp@408000000 { > + clock-latency-ns = <244144>; /* 8 32k periods */ > + opp-hz = /bits/ 64 <408000000>; > + > + opp-microvolt-speed0 = <900000 900000 1200000>; > + opp-microvolt-speed1 = <900000 900000 1200000>; > + opp-microvolt-speed2 = <900000 900000 1200000>; Is there actually an advantage when using the three cells version? I wonder if we should go with just the target voltage (the first cell here), as done for the H616. Apart from that it looks fine to me. Cheers, Andre. > + }; > + > + opp@600000000 { > + clock-latency-ns = <244144>; /* 8 32k periods */ > + opp-hz = /bits/ 64 <600000000>; > + > + opp-microvolt-speed0 = <900000 900000 1200000>; > + opp-microvolt-speed1 = <900000 900000 1200000>; > + opp-microvolt-speed2 = <900000 900000 1200000>; > + }; > + > + opp@816000000 { > + clock-latency-ns = <244144>; /* 8 32k periods */ > + opp-hz = /bits/ 64 <816000000>; > + > + opp-microvolt-speed0 = <940000 940000 1200000>; > + opp-microvolt-speed1 = <900000 900000 1200000>; > + opp-microvolt-speed2 = <900000 900000 1200000>; > + }; > + > + opp@1080000000 { > + clock-latency-ns = <244144>; /* 8 32k periods */ > + opp-hz = /bits/ 64 <1080000000>; > + > + opp-microvolt-speed0 = <1020000 1020000 1200000>; > + opp-microvolt-speed1 = <980000 980000 1200000>; > + opp-microvolt-speed2 = <950000 950000 1200000>; > + }; > + > + opp@1200000000 { > + clock-latency-ns = <244144>; /* 8 32k periods */ > + opp-hz = /bits/ 64 <1200000000>; > + > + opp-microvolt-speed0 = <1100000 1100000 1200000>; > + opp-microvolt-speed1 = <1020000 1020000 1200000>; > + opp-microvolt-speed2 = <1000000 1000000 1200000>; > + }; > + > + opp@1320000000 { > + clock-latency-ns = <244144>; /* 8 32k periods */ > + opp-hz = /bits/ 64 <1320000000>; > + > + opp-microvolt-speed0 = <1160000 1160000 1200000>; > + opp-microvolt-speed1 = <1060000 1060000 1200000>; > + opp-microvolt-speed2 = <1030000 1030000 1200000>; > + }; > + > + opp@1464000000 { > + clock-latency-ns = <244144>; /* 8 32k periods */ > + opp-hz = /bits/ 64 <1464000000>; > + > + opp-microvolt-speed0 = <1180000 1180000 1200000>; > + opp-microvolt-speed1 = <1180000 1180000 1200000>; > + opp-microvolt-speed2 = <1130000 1130000 1200000>; > + }; > + }; > +}; > + > +&cpu0 { > + operating-points-v2 = <&cpu_opp_table>; > +}; > + > +&cpu1 { > + operating-points-v2 = <&cpu_opp_table>; > +}; > + > +&cpu2 { > + operating-points-v2 = <&cpu_opp_table>; > +}; > + > +&cpu3 { > + operating-points-v2 = <&cpu_opp_table>; > +}; > diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi > index 6dca766ea222..747a0292ef98 100644 > --- a/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi > +++ b/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi > @@ -23,6 +23,7 @@ cpu0: cpu@0 { > device_type = "cpu"; > reg = <0x0>; > enable-method = "psci"; > + clocks = <&ccu CLK_CPUX>; > }; > > cpu1: cpu@1 { > @@ -30,6 +31,7 @@ cpu1: cpu@1 { > device_type = "cpu"; > reg = <0x1>; > enable-method = "psci"; > + clocks = <&ccu CLK_CPUX>; > }; > > cpu2: cpu@2 { > @@ -37,6 +39,7 @@ cpu2: cpu@2 { > device_type = "cpu"; > reg = <0x2>; > enable-method = "psci"; > + clocks = <&ccu CLK_CPUX>; > }; > > cpu3: cpu@3 { > @@ -44,6 +47,7 @@ cpu3: cpu@3 { > device_type = "cpu"; > reg = <0x3>; > enable-method = "psci"; > + clocks = <&ccu CLK_CPUX>; > }; > }; > > @@ -142,6 +146,10 @@ efuse@3006000 { > ths_calibration: calib@14 { > reg = <0x14 8>; > }; > + > + cpu_speed_grade: cpu-speed-grade@1c { > + reg = <0x1c 0x2>; > + }; > }; > > watchdog@30090a0 { -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy