From nobody Sun Jun 28 09:40:03 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D9C9FC433F5 for ; Thu, 10 Feb 2022 10:06:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239406AbiBJKGr (ORCPT ); Thu, 10 Feb 2022 05:06:47 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:52658 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236226AbiBJKGp (ORCPT ); Thu, 10 Feb 2022 05:06:45 -0500 Received: from mail-wr1-x430.google.com (mail-wr1-x430.google.com [IPv6:2a00:1450:4864:20::430]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0DF32C55; Thu, 10 Feb 2022 02:06:47 -0800 (PST) Received: by mail-wr1-x430.google.com with SMTP id s18so8559571wrv.7; 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=oeU+8nGelARLCELrSdQnXAkHkJB3q7y7VsGMz2fUx3h9dwC+otN5LKdoC+AkAfBD2Q CxXRDSEm9uCmET+Q5GuREfC6Yej7bbkOCmXviipydBR3V5tjy5D5uuPko/4iNBlKEm4s Qi0APwUvxQF9lf9edC3mep8ao29b49Gx7sjE9YRlfc9NjNPlc8Pd9Egl8hs7LRaegL/z WAlgWvUrB7ZxgoXq+q9NyEkrli05affnDO9qUgLM19k4NZwUn26/EgY00HARIRYrL5GE ciMIcC1SaQoRJ5Kof4yAviWlCr0imUdVQ9HjrCSRmuQ5YPFR/TRU6fnAanBfFMg0nYKH I7XA== X-Gm-Message-State: AOAM530pKIZt/1RKt1VeZOdGy0OpUoQQjXzpmKrnwpdbl6pGwCuusCWB +0DW3aMzdo51qfx5lZXUCLs= 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> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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 o= perating 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 =3D "operating-points-v2"; opp-shared; =20 - opp-100000000 { - opp-hz =3D /bits/ 64 <100000000>; - opp-microvolt =3D <731000>; - }; - - opp-250000000 { - opp-hz =3D /bits/ 64 <250000000>; - opp-microvolt =3D <731000>; - }; - - opp-500000000 { - opp-hz =3D /bits/ 64 <500000000>; - opp-microvolt =3D <731000>; - }; - - opp-667000000 { - opp-hz =3D /bits/ 64 <667000000>; - opp-microvolt =3D <731000>; - }; - opp-1000000000 { opp-hz =3D /bits/ 64 <1000000000>; opp-microvolt =3D <761000>; @@ -71,26 +51,6 @@ compatible =3D "operating-points-v2"; opp-shared; =20 - opp-100000000 { - opp-hz =3D /bits/ 64 <100000000>; - opp-microvolt =3D <731000>; - }; - - opp-250000000 { - opp-hz =3D /bits/ 64 <250000000>; - opp-microvolt =3D <731000>; - }; - - opp-500000000 { - opp-hz =3D /bits/ 64 <500000000>; - opp-microvolt =3D <731000>; - }; - - opp-667000000 { - opp-hz =3D /bits/ 64 <667000000>; - opp-microvolt =3D <731000>; - }; - opp-1000000000 { opp-hz =3D /bits/ 64 <1000000000>; opp-microvolt =3D <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 =3D "operating-points-v2"; opp-shared; =20 - opp-100000000 { - opp-hz =3D /bits/ 64 <100000000>; - opp-microvolt =3D <731000>; - }; - - opp-250000000 { - opp-hz =3D /bits/ 64 <250000000>; - opp-microvolt =3D <731000>; - }; - - opp-500000000 { - opp-hz =3D /bits/ 64 <500000000>; - opp-microvolt =3D <731000>; - }; - - opp-667000000 { - opp-hz =3D /bits/ 64 <667000000>; - opp-microvolt =3D <731000>; - }; - opp-1000000000 { opp-hz =3D /bits/ 64 <1000000000>; opp-microvolt =3D <731000>; @@ -76,26 +56,6 @@ compatible =3D "operating-points-v2"; opp-shared; =20 - opp-100000000 { - opp-hz =3D /bits/ 64 <100000000>; - opp-microvolt =3D <751000>; - }; - - opp-250000000 { - opp-hz =3D /bits/ 64 <250000000>; - opp-microvolt =3D <751000>; - }; - - opp-500000000 { - opp-hz =3D /bits/ 64 <500000000>; - opp-microvolt =3D <751000>; - }; - - opp-667000000 { - opp-hz =3D /bits/ 64 <667000000>; - opp-microvolt =3D <751000>; - }; - opp-1000000000 { opp-hz =3D /bits/ 64 <1000000000>; opp-microvolt =3D <771000>; --=20 2.17.1 From nobody Sun Jun 28 09:40:03 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CA9E1C433FE for ; Thu, 10 Feb 2022 10:06:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239415AbiBJKGt (ORCPT ); Thu, 10 Feb 2022 05:06:49 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:52698 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239405AbiBJKGr (ORCPT ); Thu, 10 Feb 2022 05:06:47 -0500 Received: from mail-wm1-x332.google.com (mail-wm1-x332.google.com [IPv6:2a00:1450:4864:20::332]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B3ACFCF3; Thu, 10 Feb 2022 02:06:48 -0800 (PST) Received: by mail-wm1-x332.google.com with SMTP id k3-20020a1ca103000000b0037bdea84f9cso3535772wme.1; Thu, 10 Feb 2022 02:06:48 -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=Y0ck2+Flg1Nv+YQQJK1Oj0F4moGp+OjHs+CYNxD2uz8=; b=a8P87qlqFA2/4FEtvmwzeI04KHyNPH7+FoKcSsiUykIs6yJnsgjWIEfGl0isyS0AF7 UVKWLkp7E/7V4BLJuADG13m9FJ0VkF8Em2nIIg0r5B4Xukfwkd8x321smxXu7gPWjZYF uI5qpYl28fMUIjslfV3PkD7e+o256HXnQb4iJJgcR9LhIYP+4z2oUUtXPxIPPyMsHWaz J+gbEXh4zMbr01YpqRcX3HYcyuBfy9DKL5SIOJ6tfr0n0nbEn5ZXosFqLexLT5sq6Sbh 2updAThX82ERiy8d4a3ocCBFPM2Q4usaLnKsHoZZlj62axCFkW2SVVFgwAnJ3BJEb6R0 RZHQ== 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=Y0ck2+Flg1Nv+YQQJK1Oj0F4moGp+OjHs+CYNxD2uz8=; b=Vh0yDdtpqp2gf5v0MyfLWjHk6Eaf/l5w7qzpikYZbJNnKxHlOtnr3ql6BCrX+0slie rNuL09AGG8laPuB6ZnWcVnqc3S0SrNHLmIxyzTEVJ17aBXUFz8EioZlOW9T27/EusoW4 a7bckNzWyfmdhr6aZZmms4L/ejklsOeMwQA0zgezuyCn1a6K1ZcupsZRSwj0ykvOMpS8 JYF3mz0YtM8gn5WGrcBreFuo4odroJtyIXF9eEtpadhhV+qvjx7m5Yh9siO1z+ZoihvO XyfxN0DYgQt/u/7HmUlbBUX0ZlBaug6SrXNdo42lmaSw2zC9O+2Xa7YgVqcPzkcy16qK rnJw== X-Gm-Message-State: AOAM532YVq9luOJp1Rj+SKhF2/D/fM2TD4oEgZDTO5n194GN65W6aQHN MYqetVP4QduVSsxuAKsIxXgpcfDFW/WqTw== X-Google-Smtp-Source: ABdhPJythzp7JbMzxyxftp7l97OVurj1aMwR3pc9YOlmUz+tTRyenoz4dHM6xCWl5VM+txLC23vzOw== X-Received: by 2002:a7b:c201:: with SMTP id x1mr1546625wmi.102.1644487607336; Thu, 10 Feb 2022 02:06:47 -0800 (PST) Received: from localhost.localdomain ([87.200.95.144]) by smtp.gmail.com with ESMTPSA id g15sm18817494wri.82.2022.02.10.02.06.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Feb 2022 02:06:46 -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 2/2] arm64: dts: meson: remove CPU opps below 1GHz for SM1 boards Date: Thu, 10 Feb 2022 10:06:38 +0000 Message-Id: <20220210100638.19130-3-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> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Amlogic SM1 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: 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/d= ts/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 =3D "operating-points-v2"; opp-shared; =20 - opp-100000000 { - opp-hz =3D /bits/ 64 <100000000>; - opp-microvolt =3D <730000>; - }; - - opp-250000000 { - opp-hz =3D /bits/ 64 <250000000>; - opp-microvolt =3D <730000>; - }; - - opp-500000000 { - opp-hz =3D /bits/ 64 <500000000>; - opp-microvolt =3D <730000>; - }; - - opp-667000000 { - opp-hz =3D /bits/ 64 <666666666>; - opp-microvolt =3D <750000>; - }; - opp-1000000000 { opp-hz =3D /bits/ 64 <1000000000>; opp-microvolt =3D <770000>; --=20 2.17.1