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[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 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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