From patchwork Thu Feb 10 10:06:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Hewitt X-Patchwork-Id: 12741642 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 9802BC433F5 for ; Thu, 10 Feb 2022 10:08:13 +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:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=KSUrEpxpeyHFrwnYkY4w4GO54X5e+WrbDUFhuwfGY14=; b=4aQrclPoVqB8Kw PbmbKTDDmo7IgXUcAFO9tL2GqkS5gxEiUZWRdV78NdiJqcPhmqHNj0uqUDZlpL3Hx4PomBwpLNmsO EA1Dda5B1FfwMpGAi0aASGE6QGyk7HOfwVTgZ//h7UMPkWumcF0sGtgtO8qAn0r/cYhhizyOD6cMS 5MYLpSluJaINNqPrHToqs3myToCAzqoiijbwkNbrQkt/QblklI9HM5CixDS4eif8FD4+1sT0gl2az HIefNJJZuS0otaRy5bjjFAYwc3e2x+7jhUL6+4oIIDWESxliCz+aY2S9Mx4DrPcSemwolShUOVXpK EApQEmnw5LFUhatGJSKA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nI6Ls-003Osh-Hl; Thu, 10 Feb 2022 10:07:00 +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 1nI6Le-003OnZ-AN; Thu, 10 Feb 2022 10:06:47 +0000 Received: by mail-wr1-x42c.google.com with SMTP id v12so8624658wrv.2; Thu, 10 Feb 2022 02:06:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=AdLoWe4TJ+d53isrSfLXpob6bEFDfaz15GEr9DTK+5k=; b=i5DEQyEGksT5axCgpBQ1hQ2t5ZMnMcozV7HGcpy2jwPAYpT8q8dpUJ8/nSTFrRtnyM L3j0GOzou9gTl6wm4a42frUCbFNfR163XJko8qIlUEZYnxb2Ua7EOiNLGBdX75esOlWQ iUu0UC9xZYkYjFsKhsllEGVB6vxDqCxNb4e/XwBJg0vH1NxaslaAKqNZx8bFqO0VGzQ9 3Q0YZ7zOMn4Cxbj8eGJqkYxDHVdHznGS300aTWzKI8Y6RrX7AA5RnC9C4Rdq7XtToZEQ kzkJYX1oZ5DAcFLIGbOac9AhgRl8Pke6XWjKtu6dgjKC4hIkCnHtB1hpXVxgBrcy+nci GnKQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=AdLoWe4TJ+d53isrSfLXpob6bEFDfaz15GEr9DTK+5k=; b=7zHeDDFbGIZy3xyxVbTmFpqb6IcOPjqvFuPzS05AwhWnd7WosduCVgnkEyVv1h89Wt 5TwCMiSFMCpJPL2lCwb9D5wmOEWt4jIQMdEU2iI18pz1caiplb9Nq/YBY7RDvSTYhSpD ooZ5yTFldfP2/MAacpEwpdN76qfeZ/1lEapNd9isSbG7ar2cRmq08o8Mntk0oA9eL+3R FyidMA/HS0TUCvLXT2V4cFB2kXrOt/634LCkmlRFtUutjXjCwUeHnk8Ub77lwxFfwHMu JMqeF3q3smF3mm3RdjWzwjG2fYKtXmQnv9baSmgp6qMFQbp3ZUI32NyRFsErWkz3XTgl lWIQ== X-Gm-Message-State: AOAM530EPpdyneD5GYwqhUEMZRWaFVuyuOLNujA7/YAJm52xeFrEhE/8 S06+zCArApdMJMAbS25DfEHS/dJPvthyOA== X-Google-Smtp-Source: ABdhPJxmA/ljjGJKtGRHJ20kdMBzpoWVuFUelKr1w9SqGyTwgL721t8XnS/soD648KPyCk072eEnxQ== X-Received: by 2002:a5d:48cb:: with SMTP id p11mr5875288wrs.229.1644487605013; Thu, 10 Feb 2022 02:06:45 -0800 (PST) Received: from localhost.localdomain ([87.200.95.144]) by smtp.gmail.com with ESMTPSA id g15sm18817494wri.82.2022.02.10.02.06.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Feb 2022 02:06:44 -0800 (PST) From: Christian Hewitt To: Rob Herring , Mark Rutland , Kevin Hilman , Neil Armstrong , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Christian Hewitt Subject: [PATCH v2 1/2] arm64: dts: meson: remove CPU opps below 1GHz for G12B boards Date: Thu, 10 Feb 2022 10:06:37 +0000 Message-Id: <20220210100638.19130-2-christianshewitt@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220210100638.19130-1-christianshewitt@gmail.com> References: <20220210100638.19130-1-christianshewitt@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220210_020646_381951_D0D6B5A4 X-CRM114-Status: GOOD ( 11.91 ) 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: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Amlogic G12B devices experience CPU stalls and random board wedges when the system idles and CPU cores clock down to lower opp points. Recent vendor kernels include a change to remove 100-250MHz and other distro sources also remove the 500/667MHz points. Unless all 100-667Mhz opps are removed or the CPU governor forced to performance stalls are still observed, so let's remove them to improve stability and uptime. Fixes: b96d4e92709b ("arm64: dts: meson-g12b: support a311d and s922x cpu operating points") Signed-off-by: Christian Hewitt Reviewed-by: Neil Armstrong --- .../boot/dts/amlogic/meson-g12b-a311d.dtsi | 40 ------------------- .../boot/dts/amlogic/meson-g12b-s922x.dtsi | 40 ------------------- 2 files changed, 80 deletions(-) diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-a311d.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12b-a311d.dtsi index d61f43052a34..8e9ad1e51d66 100644 --- a/arch/arm64/boot/dts/amlogic/meson-g12b-a311d.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-a311d.dtsi @@ -11,26 +11,6 @@ compatible = "operating-points-v2"; opp-shared; - opp-100000000 { - opp-hz = /bits/ 64 <100000000>; - opp-microvolt = <731000>; - }; - - opp-250000000 { - opp-hz = /bits/ 64 <250000000>; - opp-microvolt = <731000>; - }; - - opp-500000000 { - opp-hz = /bits/ 64 <500000000>; - opp-microvolt = <731000>; - }; - - opp-667000000 { - opp-hz = /bits/ 64 <667000000>; - opp-microvolt = <731000>; - }; - opp-1000000000 { opp-hz = /bits/ 64 <1000000000>; opp-microvolt = <761000>; @@ -71,26 +51,6 @@ compatible = "operating-points-v2"; opp-shared; - opp-100000000 { - opp-hz = /bits/ 64 <100000000>; - opp-microvolt = <731000>; - }; - - opp-250000000 { - opp-hz = /bits/ 64 <250000000>; - opp-microvolt = <731000>; - }; - - opp-500000000 { - opp-hz = /bits/ 64 <500000000>; - opp-microvolt = <731000>; - }; - - opp-667000000 { - opp-hz = /bits/ 64 <667000000>; - opp-microvolt = <731000>; - }; - opp-1000000000 { opp-hz = /bits/ 64 <1000000000>; opp-microvolt = <731000>; diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-s922x.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12b-s922x.dtsi index 1e5d0ee5d541..44c23c984034 100644 --- a/arch/arm64/boot/dts/amlogic/meson-g12b-s922x.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-s922x.dtsi @@ -11,26 +11,6 @@ compatible = "operating-points-v2"; opp-shared; - opp-100000000 { - opp-hz = /bits/ 64 <100000000>; - opp-microvolt = <731000>; - }; - - opp-250000000 { - opp-hz = /bits/ 64 <250000000>; - opp-microvolt = <731000>; - }; - - opp-500000000 { - opp-hz = /bits/ 64 <500000000>; - opp-microvolt = <731000>; - }; - - opp-667000000 { - opp-hz = /bits/ 64 <667000000>; - opp-microvolt = <731000>; - }; - opp-1000000000 { opp-hz = /bits/ 64 <1000000000>; opp-microvolt = <731000>; @@ -76,26 +56,6 @@ compatible = "operating-points-v2"; opp-shared; - opp-100000000 { - opp-hz = /bits/ 64 <100000000>; - opp-microvolt = <751000>; - }; - - opp-250000000 { - opp-hz = /bits/ 64 <250000000>; - opp-microvolt = <751000>; - }; - - opp-500000000 { - opp-hz = /bits/ 64 <500000000>; - opp-microvolt = <751000>; - }; - - opp-667000000 { - opp-hz = /bits/ 64 <667000000>; - opp-microvolt = <751000>; - }; - opp-1000000000 { opp-hz = /bits/ 64 <1000000000>; opp-microvolt = <771000>; From patchwork Thu Feb 10 10:06:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Hewitt X-Patchwork-Id: 12741643 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 246C5C433F5 for ; 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Recent vendor kernels include a change to remove 100-250MHz and other distro sources also remove the 500/667MHz points. Unless all 100-667Mhz opps are removed or the CPU governor forced to performance stalls are still observed, so let's remove them to improve stability and uptime. Fixes: 3d9e76483049 ("arm64: dts: meson-sm1-sei610: enable DVFS") Signed-off-by: Christian Hewitt Reviewed-by: Neil Armstrong --- arch/arm64/boot/dts/amlogic/meson-sm1.dtsi | 20 -------------------- 1 file changed, 20 deletions(-) diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi b/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi index 3c07a89bfd27..80737731af3f 100644 --- a/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi +++ b/arch/arm64/boot/dts/amlogic/meson-sm1.dtsi @@ -95,26 +95,6 @@ compatible = "operating-points-v2"; opp-shared; - opp-100000000 { - opp-hz = /bits/ 64 <100000000>; - opp-microvolt = <730000>; - }; - - opp-250000000 { - opp-hz = /bits/ 64 <250000000>; - opp-microvolt = <730000>; - }; - - opp-500000000 { - opp-hz = /bits/ 64 <500000000>; - opp-microvolt = <730000>; - }; - - opp-667000000 { - opp-hz = /bits/ 64 <666666666>; - opp-microvolt = <750000>; - }; - opp-1000000000 { opp-hz = /bits/ 64 <1000000000>; opp-microvolt = <770000>;