From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f45.google.com (mail-oo1-f45.google.com [209.85.161.45]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C04061308A for ; Tue, 27 Jun 2023 17:55:00 +0000 (UTC) Received: by mail-oo1-f45.google.com with SMTP id 006d021491bc7-5634fbf0cf4so1642675eaf.3 for ; Tue, 27 Jun 2023 10:55:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=squareup.com; s=google; t=1687888499; x=1690480499; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=KMDH1mlxwV2sLVWQuxFIR054U5xIxrFoM4b9Bswiao0=; b=bhv2tUNU2iTGPX6FqlVo3PZZoWxpv2x8hi1srmfXdLDB+wA77R3xwpagLS02aKWGTu nH44RpBB5uqk9mlUsTdQ3+BgRf0Wpx1uunj1YdPgGmlFkClfdGVqb7Zh0tG4SvCx9lvG pavLbGTcnIF10qIrSKFpRaJU9moYBw1u1/GSc= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687888499; x=1690480499; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=KMDH1mlxwV2sLVWQuxFIR054U5xIxrFoM4b9Bswiao0=; b=R8vdlTRGH32T4yFsmRo2PxaKUcBF3T6c91sGHb7SMAfCheQLJGqNEXNDWLkR0KAL4E 8RMJo/0t1w65w06J6TMcJ8qUsbXj3IfqYikivQPORVGEfVb6ODNgb1DYkXNTwEgLpA+a uRcavI/HTbzta2Nhcp54pxnyBfXyBnbdY43u64DHSDfSmpNOae2dj74e90bLWNijHqX6 KfyIZJAgPCZK0SeuH0MA0HKilLWRqrtzSJifjsyvtBM7N4R7tAApKdu+Pn+2uYvndryu +WCP9w0s+YaxsEzTzh1cq9G4j8oSQ3mE/LlNXQO3TZD900OIvTL/uV/o4L2R3aGLLHAy TYqA== X-Gm-Message-State: AC+VfDyeScorgyso+/Dytq8l3A7qQ8IARyq6iW6c3xRXRhWqKa4FY2EM kNewryMb0PpJquxHO/GfwbAS3g== X-Google-Smtp-Source: ACHHUZ5128JJUpofvc84U9QEvguT6ylxK0NPBUtGocO3qCpVL4swAAl6Xq4iRqzHQOelQG16lCO4FA== X-Received: by 2002:a05:6870:c812:b0:1ad:1ce0:c348 with SMTP id ee18-20020a056870c81200b001ad1ce0c348mr15263035oab.11.1687888499657; Tue, 27 Jun 2023 10:54:59 -0700 (PDT) Received: from [10.96.32.61] (137-025-033-021.res.spectrum.com. [137.25.33.21]) by smtp.gmail.com with ESMTPSA id d88-20020a17090a6f6100b00253508d9145sm6879840pjk.46.2023.06.27.10.54.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 27 Jun 2023 10:54:59 -0700 (PDT) Message-ID: <30944ea8-d4aa-d0fd-7eaa-64b59e32eb6b@squareup.com> Date: Tue, 27 Jun 2023 10:54:55 -0700 Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 Subject: Re: [PATCH 02/11] arm64: dts: qcom: msm8939: Drop "qcom,idle-state-spc" compatible Content-Language: en-US To: Konrad Dybcio , cros-qcom-dts-watchers@chromium.org, Andy Gross , Bjorn Andersson , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Dmitry Baryshkov , James Willcox , Joseph Gates , Stephan Gerhold , Zac Crosby , Srinivas Kandagatla , Banajit Goswami , Liam Girdwood , Mark Brown , Lee Jones , Stephen Boyd , Joerg Roedel , Will Deacon , Robin Murphy , Greg Kroah-Hartman , Xu Yang , Peng Fan , Christian Marangi , Wesley Cheng , Jun Nie , Max Chen , Shawn Guo , Vivek Gautam Cc: Marijn Suijten , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Vincent Knecht , Bryan O'Donoghue , Konrad Dybcio , alsa-devel@alsa-project.org, iommu@lists.linux.dev, linux-usb@vger.kernel.org, Krzysztof Kozlowski , Leo Yan , Rob Herring , Andy Gross References: <20230627-topic-more_bindings-v1-0-6b4b6cd081e5@linaro.org> <20230627-topic-more_bindings-v1-2-6b4b6cd081e5@linaro.org> From: Benjamin Li In-Reply-To: <20230627-topic-more_bindings-v1-2-6b4b6cd081e5@linaro.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 6/27/23 9:24 AM, Konrad Dybcio wrote: > As of today, the only cool and legal way to get ARM64 SMP going is > via PSCI (or spin tables). Sadly, not all chip and device vendors were > considerate of this in the early days of arm64. Qualcomm, for example > reused their tried-and-true spin-up method from MSM8974 and their Krait/ > arm32 Cortex designs. > > MSM8916 supports SMP with its arm32 dt overlay, as probably could 8939. > But the arm64 DT should not define non-PSCI SMP or CPUidle stuff. > > Drop the qcom,idle-state-spc compatible (associated with Qualcomm-specific > CPUIdle) to make the dt checker happy: > > apq8039-t2.dtb: idle-states: cpu-sleep-0:compatible: > ['qcom,idle-state-spc', 'arm,idle-state'] is too long > > Fixes: 61550c6c156c ("arm64: dts: qcom: Add msm8939 SoC") > Signed-off-by: Konrad Dybcio Reviewed-by: Benjamin Li