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Mon, 06 Jul 2026 19:15:48 -0700 (PDT) X-Received: by 2002:a05:6a20:5491:b0:3b4:8bc6:138 with SMTP id adf61e73a8af0-3c08ed1f10amr4146347637.23.1783390547600; Mon, 06 Jul 2026 19:15:47 -0700 (PDT) Received: from [192.168.50.84] ([76.176.60.246]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-31174a92eccsm2175748eec.23.2026.07.06.19.15.46 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 06 Jul 2026 19:15:47 -0700 (PDT) Message-ID: <46af10c8-8400-4131-ac87-b3f17350bb65@oss.qualcomm.com> Date: Mon, 6 Jul 2026 19:15:15 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 RESEND 3/5] arm64: dts: qcom: Add device tree for Nord SA8797P SoC To: Pavan Kondeti , Shawn Guo Cc: Bjorn Andersson , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Konrad Dybcio , Dmitry Baryshkov , Bartosz Golaszewski , Harshal Dev , Herbert Xu , devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260526051300.1669201-1-shengchao.guo@oss.qualcomm.com> <20260526051300.1669201-4-shengchao.guo@oss.qualcomm.com> Content-Language: en-US From: Deepti Jaggi In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: v5ruTi2xpkOpsXe7jGrFVvv2rP-9cydf X-Proofpoint-Spam-Info: AW1haW4tMjYwNzA3MDAxOSBTYWx0ZWRfX2EWK1wSbOvwu id/EkKI84sYXx0fNzZWRs2+j6GlXiV/84WxGWEJoDrGDafaAV0xrT6QAWVMsnZMSJMDcjPoCwoY 7lN4OB7IG1HTbfhwWMnL0z39d6SuYRQ= X-Authority-Analysis: v=2.4 cv=EPU2FVZC c=1 sm=1 tr=0 ts=6a4c6155 cx=c_pps a=oF/VQ+ItUULfLr/lQ2/icg==:117 a=0ISbvMpsx/t7i6H15JfNAA==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=gowsoOTTUOVcmtlkKump:22 a=fFv3aZm-RBs7SO91p5wA:9 a=QEXdDO2ut3YA:10 a=3WC7DwWrALyhR5TkjVHa:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzA3MDAxOSBTYWx0ZWRfX9+mSZQt7wsMn JN14Gxu/CWAknzzi3hR0qZlzWGxBSu6UWVxV9HU14GWLnpd4Xz7rA8iTAX9ALN/hHIXR2eeXnZn G8naOSQ30Ilfm68OyiFCkblRLX/GcA2ZaILh3d9AOOE585ep+BGfL7aH8blYiwj92mGIYD9taD+ uxsc3+eMcSDrPutfivPd4Lnk4tvrY3qzeA2+qM9kmv7sW6dYlHTMSPiskwIYSZ9x+AtR1hnpS0h qwyuvCM3NYMeyJSnY1dJEI1i47vY1SaXXYyQ2dy0VOFeD4G/Gy7boFJCV5qwNkVrdh/oGHfMRkd tDMgP7rb8Vzpla1v1fkSJFn/rgX0aMx2dFb9GV5UWMFkPipcaDOJ7wMVqWLCqiLmYMgPTkC9jSS uaVyEsReFMS4dx6+Lqs5SzO0wyS9gaE7QUIAHwcMGXw5U6my9tA5oWaC8IDe2xCUjzY+tjsaW1t 39SeKmIdfDfSSil0Tbw== X-Proofpoint-ORIG-GUID: v5ruTi2xpkOpsXe7jGrFVvv2rP-9cydf X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-06_03,2026-07-06_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1011 priorityscore=1501 lowpriorityscore=0 malwarescore=0 spamscore=0 adultscore=0 suspectscore=0 phishscore=0 bulkscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607070019 On 7/6/2026 6:57 AM, Pavan Kondeti wrote: > On Tue, May 26, 2026 at 01:12:58PM +0800, Shawn Guo wrote: >> diff --git a/arch/arm64/boot/dts/qcom/scmi-common.dtsi b/arch/arm64/boot/dts/qcom/scmi-common.dtsi >> new file mode 100644 >> index 000000000000..0c7ffe9e415c >> --- /dev/null >> +++ b/arch/arm64/boot/dts/qcom/scmi-common.dtsi >> @@ -0,0 +1,1918 @@ >> +// SPDX-License-Identifier: BSD-3-Clause >> +/* >> + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. >> + */ >> + >> +#include >> + >> +&firmware { >> + scmi0: scmi-0 { >> + compatible = "qcom,scmi-smc"; >> + arm,smc-id = <0xc6008012>; >> + shmem = <&shmem0>; >> + interrupts = ; >> + interrupt-names = "a2p"; > > I believe this interrupt source is GearVM firmware via Gunyah's > doorbell, correct? How do we know that scmi0 instance's interrupt > is GIC_SPI#963? Are these assumed to be constant/fixed through out > the life time of this SoC? Yes, this interrupt is a Gunyah Rx doorbell VIRQ for SCMI a2p completion from GearVM to Linux. It is allocated by Gunyah RM from the platform's virtual IRQ range and patched into the DTB by Linux bootloader at boot stage. > >> + #address-cells = <1>; >> + #size-cells = <0>; >> + arm,max-msg = <10>; >> + arm,max-msg-size = <256>; >> + arm,max-rx-timeout-ms = <3000>; >> + >> + status = "disabled"; >> + >> + scmi0_pd: protocol@11 { >> + reg = <0x11>; >> + #power-domain-cells = <1>; >> + }; >> + >> + scmi0_dvfs: protocol@13 { >> + reg = <0x13>; >> + #power-domain-cells = <1>; >> + }; >> + >> + scmi0_rst: protocol@16 { >> + reg = <0x16>; >> + #reset-cells = <1>; >> + }; >> + }; >> + Thanks, Deepti