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[199.106.103.254]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2beab3cd473sm16316228eec.8.2026.03.16.16.58.58 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 16 Mar 2026 16:58:58 -0700 (PDT) Message-ID: Date: Mon, 16 Mar 2026 16:58:57 -0700 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 2/3] arm64: dts: qcom: Introduce sa8255p SoC To: Konrad Dybcio , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Dmitry Baryshkov Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Prasad Sodagudi , Nikunj Kela , Shazad Hussain References: <20260304-b4-scmi-upstream-v5-0-f8fc763d8da0@oss.qualcomm.com> <20260304-b4-scmi-upstream-v5-2-f8fc763d8da0@oss.qualcomm.com> Content-Language: en-US From: Deepti Jaggi In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Authority-Analysis: v=2.4 cv=C5bkCAP+ c=1 sm=1 tr=0 ts=69b89958 cx=c_pps a=wEP8DlPgTf/vqF+yE6f9lg==:117 a=JYp8KDb2vCoCEuGobkYCKw==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_glEPmIy2e8OvE2BGh3C:22 a=KKAkSRfTAAAA:8 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=COk6AnOGAAAA:8 a=xiaT7CXxcbYZedJJ_CoA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=bBxd6f-gb0O0v-kibOvt:22 a=cvBusfyB2V15izCimMoJ:22 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-GUID: YyFWQ3fn35luf1HcP7JoptV_UI9xP-Iy X-Proofpoint-ORIG-GUID: YyFWQ3fn35luf1HcP7JoptV_UI9xP-Iy X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzE2MDE5OCBTYWx0ZWRfXzOPOPXYQIUv6 Sg1ajP2DWWsXzbpG3ym1hNQtm8naUX7+2Squdan+36sCicztuPcfJSuJJirHLoImqcWcHYnQD4U sVj9cXwHzcnYWDnVGcijQT8HATGCGBDCOZN66XUgbV1AvaiVpfOqmlp1BS8ZZbasrSvvoJZpgBd EBLQ0aM79QCiCXfn9WpbueCl3M0euxkV6fbvqmp9dUGZgaGtoMYbsaOPN238oZ5qMP2KE577ZjB 6pN2DJD1xT/Ye6IE075YDFjSD5MrdZlWg5gZxi/TqAq+u9futihO2Toxtx2G6ish+Yje4J0HQ3Z /kbiZUolKRbyGPm0COO1wqEQ3+h2eC7Inqpa7OhuL319vaqx/Xinh4tcGVKWVUF51nuINEReUgu vPYj6CVx8Q0oQ6LXUnWsWibQGeZ6f7bzcU3py5fNri9XEf2vvra/IVJ7WhBH1TYQGmpJ32JLr2A 3OM8VXV/1QapkB1tnUw== 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_06,2026-03-16_06,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 suspectscore=0 priorityscore=1501 spamscore=0 lowpriorityscore=0 clxscore=1015 malwarescore=0 impostorscore=0 bulkscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603160198 On 3/11/2026 6:41 AM, Konrad Dybcio wrote: > On 3/5/26 5:28 AM, Deepti Jaggi wrote: >> From: Nikunj Kela >> >> Introduce base device tree support for sa8255p Qualcomm's automotive >> infotainment SoC. The base dt file describes core SoC components- CPUs, >> CPU map, ipcc, QUP, geni UART, interrupt controller, TLMM, reserved >> memory, SMMU, firmware scm, scmi, watchdog, SRAM, PSCI, ufs, pcie, pmu >> nodes and enable booting to shell with ramdisk. >> >> The Qualcomm automotive sa8255p SoC utilizes firmware to configure >> platform resources such as clocks, interconnects, and TLMM. Device drivers >> request these resources through the SCMI power,reset and performance >> protocols. Assign each device driver a dedicated SCMI channel and Tx/Rx >> doorbells to support parallel resource requests and aggregation in the >> SCMI platform server. Operate the SCMI server stack in an SMP-enabled VM, >> using the Qualcomm SMC/HVC transport driver for communication. >> >> Group resource operations to improve abstraction and reduce the number of >> SCMI requests. Follow the SCMI-based resource management approach >> demonstrated by Qualcomm at LinaroConnect 2024.[1] >> >> Limit initial support to basic platform resources, serial console, ufs >> and pcie.Defer enabling USB, and Ethernet to subsequent updates. >> >> [1]: https://resources.linaro.org/en/resource/wfnfEwBhRjLV1PEAJoDDte >> >> Co-developed-by: Shazad Hussain >> Signed-off-by: Shazad Hussain >> Signed-off-by: Nikunj Kela >> Co-developed-by: Deepti Jaggi >> Signed-off-by: Deepti Jaggi >> --- > [...] Thanks for reviewing the series . >> + tsens2: thermal-sensor@c251000 { >> + compatible = "qcom,sa8255p-tsens", "qcom,tsens-v2"; >> + reg = <0x0 0x0c251000 0x0 0x1ff>, >> + <0x0 0x0c224000 0x0 0x8>; > All TSENS regions are 0x1000-long > > [...] Ack > >> + tlmm: pinctrl@f000000 { >> + compatible = "qcom,sa8255p-tlmm", "qcom,sa8775p-tlmm"; >> + reg = <0x0 0x0f000000 0x0 0x1000000>; >> + interrupts = ; >> + gpio-controller; >> + #gpio-cells = <2>; >> + interrupt-controller; >> + #interrupt-cells = <2>; >> + gpio-ranges = <&tlmm 0 0 149>; >> + wakeup-parent = <&pdc>; >> + }; > Praveen suggested GPIOs are not controlled by Linux: > > https://lore.kernel.org/linux-arm-msm/12063990-70fe-4faf-89fa-c74c7bd97f42@oss.qualcomm.com/ > > Could you comment on this? > > [...] For buses,FW is handling, but for PCIe and ethernet , pin configuration is controlled by Linux.  > >> + aoss-0-thermal { >> + thermal-sensors = <&tsens0 0>; > Is Linux going to act on any of these thermal trips? > > Konrad Thanks, Deepti