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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b976cf49fa6sm529902066b.58.2026.03.16.02.39.09 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 16 Mar 2026 02:39:11 -0700 (PDT) Message-ID: <822cc610-7984-4684-99d3-8abd679eb06d@oss.qualcomm.com> Date: Mon, 16 Mar 2026 10:39:09 +0100 Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/5] arm64: dts: qcom: x1e80100: Remove interconnect from SCM device To: Dmitry Baryshkov Cc: "Maulik Shah (mkshah)" , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Thomas Gleixner , Linus Walleij , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, Sneh Mankad References: <20260312-hamoa_pdc-v1-0-760c8593ce50@oss.qualcomm.com> <20260312-hamoa_pdc-v1-1-760c8593ce50@oss.qualcomm.com> <198ccf60-a4b9-438b-ad92-bc4d2cc84b83@oss.qualcomm.com> <90b3a7df-cd02-4878-b614-1499589f0906@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzE2MDA3MyBTYWx0ZWRfX9qJwHswY8G1Z 6/tZ9AkZLQLm0JUD8VliJPfpw2D8v1/6l0jkc6d1KrfHmiYC/D0Sly4uNyfrAC/zUGhU5tN5GT+ 5O04OTJuXzi9LV7CYz8L6ZDvDz/N3kGJLMQSSIhGYNPwxxOW8ckgMOrtYJdPA3IYdlXWuOU7koY mtqb9hyu4A9Ixvp/MYaKvI2RtSDKPFuylgJcUtQ08aYJ126atPie90q1R0Z1BjZ5ogswpUcIQoW /Q8Bui73ZU/fahLsA43M3mMVq8QDBp4VQtwhZ5gfNNU9pXqLU4RvLXeXOOxklhA3zODyIhuVpsX nJPYQSPVEzB5ZLriy/b653wcveaJ/ePrkzgl0MyurZS6esHpThTR74Ry8UuiZpJbRgxjQPWnTyi UQZC8zSzwjDYT7Mj0AdcCGRj5XOXIioQeMhJvasF078jCorplsN3HY4f0MU+AUhBmQHCPDZ9bwd NC9DucGcXAdmkaqQTBw== X-Proofpoint-GUID: UQoMYqjDirQa1AMyWvpct0H4O-Bdw1Zo X-Authority-Analysis: v=2.4 cv=fLs0HJae c=1 sm=1 tr=0 ts=69b7cfc1 cx=c_pps a=HLyN3IcIa5EE8TELMZ618Q==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=GTjZm-GAFzhKDQlTXa8A:9 a=QEXdDO2ut3YA:10 a=bTQJ7kPSJx9SKPbeHEYW:22 X-Proofpoint-ORIG-GUID: UQoMYqjDirQa1AMyWvpct0H4O-Bdw1Zo X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-16_03,2026-03-13_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 priorityscore=1501 malwarescore=0 lowpriorityscore=0 suspectscore=0 impostorscore=0 clxscore=1015 adultscore=0 spamscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603160073 On 3/13/26 3:48 PM, Dmitry Baryshkov wrote: > On Fri, Mar 13, 2026 at 12:59:46PM +0100, Konrad Dybcio wrote: >> On 3/13/26 11:12 AM, Maulik Shah (mkshah) wrote: >>> On 3/13/2026 7:41 AM, Dmitry Baryshkov wrote: >>>> On Thu, Mar 12, 2026 at 09:26:35PM +0530, Maulik Shah wrote: >> >>> d) Add separate SCM child device (with interconnects) under SoC. >> >> We'd then have to probe it as an aux device or something, which would >> either delay the probing of SCM, or introduce the need to ping-pong for >> PAS availability between the API provider and consumer, since some calls >> work perfectly fine without the ICC path, while others could really use >> it > > qcom_scm_pas_is_available() ? This comes back to either having to wait for the interconnect provider anyway, or allowing the ICC-enhanced calls to take place before they that happens, stripping us of the benefits. Konrad