From patchwork Sun Oct 30 18:36:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Jonker X-Patchwork-Id: 13025184 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 1488BECAAA1 for ; Sun, 30 Oct 2022 18:48:11 +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:Cc:To:Subject:From:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=2K7zgZEymgtqlLiw4+5oHnDWx3PBsPvEJxlcjEYPKA0=; b=CGjqC/73pytSA2 kF0DDXmBoyAoRobUg0ThyYGEyaW9WAZn/ZsOyO4pYhDtnOL8xKdoIYx99shsV9rIgVT5SQWwi1Tzo 3lUvJH3EVfzAOelyoLlxEVNZ81Cvd/3/tMSY1WPVnPj0m2J3At0nd5VSikVioJ6HI6OA+I9n2n5fE rDhCK3huTAucm3L1cBdwgKe7BAPJ/cyjeNtri0QI0nps/JVXNlm+nwx3qkbtoRpEBdIaC1IyTpM7B v5s8085rv7FO3teHcYUkKCmD8oCUSV2Z2MzbphhhUupWWSPY9kQS2jUH9OhrW3xAE9iEvJlwyzefB RLixK0roVoyiaMW79JyQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1opDKM-001u9X-Dh; Sun, 30 Oct 2022 18:46:36 +0000 Received: from mail-wr1-x42c.google.com ([2a00:1450:4864:20::42c]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1opDAD-001pHR-F6; Sun, 30 Oct 2022 18:36:08 +0000 Received: by mail-wr1-x42c.google.com with SMTP id a14so13179172wru.5; Sun, 30 Oct 2022 11:36:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:content-language:cc:to:subject:from :user-agent:mime-version:date:message-id:from:to:cc:subject:date :message-id:reply-to; bh=lrNDCNfu7ZM4dOdnaJgxpzE77S3pvCYPnM96o3tk4S4=; b=AESNzqeJiKxl1IxfOpqDJ2H1k/FRxBVPKro5eYOHHM7YpejXu7wLw3XOsL4rcocAqt 5CBNVZuVo9U9RGv65pOt8JvncjL6DOzu8ewmJgjqYdEITbpmC24ZhA4J2eRj0uMC92oU kKCNJpj9IMx3QJnhwgSuovtvkatUDaylF6zWEP27DBgfsnRTSzraLU04DgTfidfcBFtj aa3bTLTL1b7ZFVRJCmava3N+zAGXEsDEkcqxOe8aqzIa8dvo98G/PMMHQZOZDZXNqjPV Wrr70cJD+JKlPw/jpGogsEbebHhKKy/cXwHi9coZR8wI4znmZ5r7x+Wo0Hh0hG2nQFKe SQTw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:content-language:cc:to:subject:from :user-agent:mime-version:date:message-id:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=lrNDCNfu7ZM4dOdnaJgxpzE77S3pvCYPnM96o3tk4S4=; b=K+WsuB1wcPQkUcMgLmzN83UcdOSGY4yeruPENU4sCBx6pxL1jPOn2dY1Ncz/HMhLpD 3mSJXLRGHPYMiZIPYaXnNUAYZ/+eMpAkAFCBqRH8KodVFcQSulPKabhUqOxxOQJ2bNDW OnG3DiLia7FDs2dbxBZU0xE5t5bgRf4ZVL4uG744Ne2t8W0V0CsMUTWmpQMxZBCyy3o+ wREco5okczfocmWYJFOCHLtvmlKy893j0isrlRsDkP0in82hNdjiS86TRRJ0sh5j003f JB7+DD7aHN51vC8fu1jORFo0Eg4ZCGCNuvWEFw67pUr/UWRhKWuYKSOyIf4Vb5d0Aame xF2Q== X-Gm-Message-State: ACrzQf2rBzS40I7cEHCOKrWBQ/Euc3Mnxe4Pm+ZvbJgWAfcT6I/wMeWs rwlc08oEmnU0BMQaZ+8nFm4= X-Google-Smtp-Source: AMsMyM6v15LvKnbZgCTZa8QwRsmiIY1KiecD0neqjsDCxkPUaoE2bVtKJxbo/R4DpSUL7JsqKoUpCg== X-Received: by 2002:adf:fc12:0:b0:236:9b2e:4843 with SMTP id i18-20020adffc12000000b002369b2e4843mr5535390wrr.620.1667154963240; Sun, 30 Oct 2022 11:36:03 -0700 (PDT) Received: from [192.168.2.2] (81-204-249-205.fixed.kpn.net. [81.204.249.205]) by smtp.gmail.com with ESMTPSA id q8-20020a5d5748000000b0023677081f3asm4835322wrw.42.2022.10.30.11.36.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 30 Oct 2022 11:36:02 -0700 (PDT) Message-ID: <88e93a81-ef9f-adcc-db83-f8b5ba615c47@gmail.com> Date: Sun, 30 Oct 2022 19:36:01 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.3.0 From: Johan Jonker Subject: [PATCH v1 1/2] arm: rockchip: Kconfig: remove select ARM_GLOBAL_TIMER To: heiko@sntech.de Cc: linux@armlinux.org.uk, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221030_113605_563128_DB16F2C5 X-CRM114-Status: GOOD ( 11.03 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The clocksource and the sched_clock provided by the arm_global_timer on Rockchip rk3066a/rk3188 are quite unstable because their rates depend on the cpu frequency. Recent changes to the arm_global_timer driver makes it impossible to use. On the other side, the arm_global_timer has a higher rating than the rockchip_timer, it will be selected by default by the time framework while we want to use the stable rockchip clocksource. Let's disable the arm_global_timer in order to have the ROCKCHIP_TIMER (rk3188) or DW_APB_TIMER (rk3066a) selected by default. Signed-off-by: Johan Jonker --- ARM: dts: rockchip: disable arm-global-timer for rk3188 https://lore.kernel.org/linux-rockchip/1492374441-23336-26-git-send-email-daniel.lezcano@linaro.org/ clocksource: arm_global_timer: implement rate compensation whenever source clock changes https://lore.kernel.org/all/20210406130045.15491-2-andrea.merello@gmail.com/ --- arch/arm/mach-rockchip/Kconfig | 2 -- 1 file changed, 2 deletions(-) -- 2.20.1 diff --git a/arch/arm/mach-rockchip/Kconfig b/arch/arm/mach-rockchip/Kconfig index b7855cc66..0432a4430 100644 --- a/arch/arm/mach-rockchip/Kconfig +++ b/arch/arm/mach-rockchip/Kconfig @@ -15,8 +15,6 @@ config ARCH_ROCKCHIP select DW_APB_TIMER_OF select REGULATOR if PM select ROCKCHIP_TIMER - select ARM_GLOBAL_TIMER - select CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK select ZONE_DMA if ARM_LPAE select PM help From patchwork Sun Oct 30 18:37:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Jonker X-Patchwork-Id: 13025185 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 2E1A6ECAAA1 for ; Sun, 30 Oct 2022 18:49:35 +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:In-Reply-To:References:Cc:To:Subject: From:MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=bPvhMeK7G/oK5nfb9V47KtZIycnGIKvr0bvz7hDUr10=; b=N/MdcxJJ6QOqUT Jl4TBeFCOS+ijaHzkIjB/c3zi42Sfp59/cqM7DhpLipWQGKY8K3zZHWhuvVEDWFsM4ARKWeCGd4Hn 8b1/trT1KByqgsY6oEXupp+hoLbmWanRJB0sN2vco+F+rA6aM2WOKKuq2e8avzNRnbXnAtbb76dsp TQgggv2rXRxcndFcN8cmkLbk018Y4Fk3yB7h8GdbPw3Z77ohN6ykdM1C6Sn1MlMkdUmA/K3s5Gi98 MFyfzjDk2LLWWEA8D47mGN4laFW7ffdWrs4Ebi5ryAeGcDl6w4Kz9RkSLUoJRBjwhxRKtG8wxvhcG dnajHQI95HRV2TDnZOtg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1opDM0-001uqG-NG; Sun, 30 Oct 2022 18:48:17 +0000 Received: from mail-wr1-x42d.google.com ([2a00:1450:4864:20::42d]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1opDBB-001piq-DH; Sun, 30 Oct 2022 18:37:07 +0000 Received: by mail-wr1-x42d.google.com with SMTP id w14so13148918wru.8; Sun, 30 Oct 2022 11:37:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:in-reply-to:content-language:references :cc:to:subject:from:user-agent:mime-version:date:message-id:from:to :cc:subject:date:message-id:reply-to; bh=J+5BMktAWdfToMJ1hbGNlYZD5Qlu0JfVkC/Za08BZ7c=; b=lZucQFwMUiiqTnckQYk0BtEzg8Tx46FKrrik/n0DlFfqvcr6eKD29Mh+E+GHXaA8jg FT0YsGguBVA/bYI0L4aL4kernwk03SduYoNJxRIcoqAYVbfgZXQoECfFpzery7Ww48az 9s0sZ8tlCbYSyNpfPziD8Pog7LepHxTkkeNoQ0S08gIQf4pVe2TYWRb5ru7F4b93NVpz FOUE3HPTDqmkXi5LyC9mdu15MHL9WIbuH1XhJ56QO5NvbcFaSj5wcME/30bw/YxnLJ6t FLe2BTrBl2/OuYNBG998GuXgqY+TWapocl6M6aTobKrpxA8uHSU1UeLHpR/agzFou3ER iRQQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:content-language:references :cc:to:subject:from:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=J+5BMktAWdfToMJ1hbGNlYZD5Qlu0JfVkC/Za08BZ7c=; b=OHTAYUG25Etsm3HZWrAac8nEw+8RmswLJVoZ4joas81wioseXbvzAS0kwbQghh28HM pnuYUTVDjXUzP2Je1qKBsbwGxbKwHd6M+8qzJM1xzUPMf6U+VnyGpifAX7VDAi0abZAj Xd4V4V07ADG7ICJDMBpNhm+kosIfVuKZVWYHVf2xU29YUMoHRoJ/VpTT6JCX3uKy3AYK 4EBGZsRRNhoGq75WLzrHfN19uNtsvkVPeYZX3y9GKNYHI07kpN5wZ2JXcYqlcXxAZHv7 tvfPUKQ6E920JifTPJKoahqit74ce8lnZnYfxJIPqjS0uRj70EDmtE1ep0Y3tSCyKfyi FLlA== X-Gm-Message-State: ACrzQf1cHZJLimt1KCxGiJW7wj++tKK+0+qml3BBK8cf1Kzf59xh33kB Md9cAielQABxqKMlhl8Z6Bk= X-Google-Smtp-Source: AMsMyM6TOuE20NlQk53uFH4Kp3NVKx69kpi8DKy7vPHScvANWSbp858ehjPjFWT1NZKv4p1V9sTu0Q== X-Received: by 2002:a5d:498a:0:b0:236:58ef:6796 with SMTP id r10-20020a5d498a000000b0023658ef6796mr5817390wrq.399.1667155022484; Sun, 30 Oct 2022 11:37:02 -0700 (PDT) Received: from [192.168.2.2] (81-204-249-205.fixed.kpn.net. [81.204.249.205]) by smtp.gmail.com with ESMTPSA id bx10-20020a5d5b0a000000b0022e47b57735sm4922159wrb.97.2022.10.30.11.37.01 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 30 Oct 2022 11:37:02 -0700 (PDT) Message-ID: <903ba85a-75fc-ff9e-e0ba-4a1e6161abc1@gmail.com> Date: Sun, 30 Oct 2022 19:37:01 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.3.0 From: Johan Jonker Subject: [PATCH v1 2/2] ARM: dts: rockchip: rk3066a: disable arm_global_timer To: heiko@sntech.de Cc: linux@armlinux.org.uk, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org References: <88e93a81-ef9f-adcc-db83-f8b5ba615c47@gmail.com> Content-Language: en-US In-Reply-To: <88e93a81-ef9f-adcc-db83-f8b5ba615c47@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221030_113705_509733_F2D04E64 X-CRM114-Status: GOOD ( 11.73 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The clocksource and the sched_clock provided by the arm_global_timer on Rockchip rk3066a/rk3188 are quite unstable because their rates depend on the cpu frequency. Recent changes to the arm_global_timer driver makes it impossible to use. On the other side, the arm_global_timer has a higher rating than the rockchip_timer, it will be selected by default by the time framework while we want to use the stable rockchip clocksource. Let's disable the arm_global_timer in order to have the DW_APB_TIMER (rk3066a) selected by default. Signed-off-by: Johan Jonker --- ARM: dts: rockchip: disable arm-global-timer for rk3188 https://lore.kernel.org/linux-rockchip/1492374441-23336-26-git-send-email-daniel.lezcano@linaro.org/ clocksource: arm_global_timer: implement rate compensation whenever source clock changes https://lore.kernel.org/all/20210406130045.15491-2-andrea.merello@gmail.com/ --- arch/arm/boot/dts/rk3066a.dtsi | 4 ++++ 1 file changed, 4 insertions(+) -- 2.20.1 diff --git a/arch/arm/boot/dts/rk3066a.dtsi b/arch/arm/boot/dts/rk3066a.dtsi index de9915d94..cf8045625 100644 --- a/arch/arm/boot/dts/rk3066a.dtsi +++ b/arch/arm/boot/dts/rk3066a.dtsi @@ -653,6 +653,10 @@ }; }; +&global_timer { + status = "disabled"; +}; + &gpu { compatible = "rockchip,rk3066-mali", "arm,mali-400"; interrupts = ,