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Mon, 09 Nov 2026 06:16:43 -0800 (PST) Received: from [192.168.226.72] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c4d6a9d6867sm171976966b.84.2026.11.09.06.16.41 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 09 Nov 2026 06:16:42 -0800 (PST) Message-ID: Date: Mon, 9 Nov 2026 15:16:40 +0100 X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] arm64: dts: qcom: sm8750: mark the ADSP fastrpc node as non-secure domain To: Qianhui Xu , andersson@kernel.org, konradybcio@kernel.org, Ekansh Gupta , Dmitry Baryshkov , Srinivas Kandagatla Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20261107032646.32363-1-xiaqinghuan@mail.ustc.edu.cn> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20261107032646.32363-1-xiaqinghuan@mail.ustc.edu.cn> Content-Type: text/plain; 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the CDSP fastrpc node already carries > "qcom,non-secure-domain", the ADSP one does not. With the fastrpc driver > keying the secure/non-secure split off that property, the ADSP only > instantiates /dev/fastrpc-adsp-secure and userspace never gets > /dev/fastrpc-adsp, so libssc/hexagonrpcd cannot attach to the sensor PD > (qrtr service 400) and iio-sensor-proxy reports no sensors at all. Hm, this is a nuanced case - adding +Ekansh, +Dmitry and +Srini > Observed on the Lenovo Legion Tab Y700 Gen4 (TB322FC), which is SM8750 > based: without this property /dev/fastrpc-adsp never appears and > iio-sensor-proxy exposes neither accelerometer, ambient light nor > proximity; with it, qrtr shows the "Snapdragon Sensor Core service" > (id 400) and all three sensor types report as available. The change is > one property on one node, matching what the CDSP node already does. > > Tested with `make CHECK_DTBS=y qcom/sm8750-mtp.dtb` (no new warnings; the > single avoid_unnecessary_addr_size warning on dsi@ae96000 is present > before and after). > > *** AI-assistance disclosure *** > This patch and its commit message were prepared with the help of an LLM > coding assistant. The author reviewed the change line by line, ran the > checks quoted above on his own hardware and takes full responsibility > for the content. Please keep that under the --- line so it doesn't end up in the commit log. Konrad > > Signed-off-by: Qianhui Xu > --- > arch/arm64/boot/dts/qcom/sm8750.dtsi | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/boot/dts/qcom/sm8750.dtsi b/arch/arm64/boot/dts/qcom/sm8750.dtsi > index cf947acc57..9302481b11 100644 > --- a/arch/arm64/boot/dts/qcom/sm8750.dtsi > +++ b/arch/arm64/boot/dts/qcom/sm8750.dtsi > @@ -2571,6 +2571,7 @@ fastrpc { > compatible = "qcom,fastrpc"; > qcom,glink-channels = "fastrpcglink-apps-dsp"; > label = "adsp"; > + qcom,non-secure-domain; > memory-region = <&adsp_rpc_remote_heap_mem>; > qcom,vmids = QCOM_SCM_VMID_ADSP_HEAP>;