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Sun, 15 Mar 2026 21:32:24 -0700 (PDT) X-Received: by 2002:a17:902:f60a:b0:2ae:ceb0:d5ec with SMTP id d9443c01a7336-2aeceb0db3fmr100892815ad.44.1773635544004; Sun, 15 Mar 2026 21:32:24 -0700 (PDT) Received: from [10.217.198.242] ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2aece56ca17sm97791965ad.13.2026.03.15.21.32.19 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 15 Mar 2026 21:32:23 -0700 (PDT) Message-ID: <5c100978-a371-4e2b-ad65-b160eee8fbdc@oss.qualcomm.com> Date: Mon, 16 Mar 2026 10:02:18 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: "Maulik Shah (mkshah)" Subject: Re: [PATCH 1/5] arm64: dts: qcom: x1e80100: Remove interconnect from SCM device To: Krzysztof Kozlowski Cc: 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> <20260313-nippy-seahorse-of-security-b1b6f6@quoll> Content-Language: en-US In-Reply-To: <20260313-nippy-seahorse-of-security-b1b6f6@quoll> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: Cc1bFpRNoruZNktNvWJ_PBGNBF3t_C-e X-Proofpoint-ORIG-GUID: Cc1bFpRNoruZNktNvWJ_PBGNBF3t_C-e X-Authority-Analysis: v=2.4 cv=AqXjHe9P c=1 sm=1 tr=0 ts=69b787da cx=c_pps a=IZJwPbhc+fLeJZngyXXI0A==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=EUspDBNiAAAA:8 a=LLmJQVH4VZ79FyvoyrAA:9 a=QEXdDO2ut3YA:10 a=uG9DUKGECoFWVXl0Dc02:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzE2MDAzMiBTYWx0ZWRfX3TM96KweNu1T qM32LJN5U+2Be9pnv+nSlHWPvKLXhmtXKXd9TheXEgZWtZN61SteFyc3AP4faOW9I6wH4LQi9+f BYR/DlPRHCbRU1XaJeb7dQ39oQbY7VNlhC+cKAmDtJaCzoP6qpkUfZOgEdIsoU7/wGaX9gvecDO U0X84Rd3jhkle6amZbGoFXEsIU9Ji5RylDSPWFRruJj6NQ+Qoln2ncwEU5gDmNokfm7N0eY50bb YarrAwh2F413NdqdV9Y+FxUeWrm4TCHL44uJZCBAmamC2V5jptQk635G7OFvemZvLuWKSrdiGWg /EexXuoalFBalnpk6tHHWyXj328uJ6DUYX9vGbFh2LROqAaOXJ5MfZ/wOBFrAuXIT2t4BX+mJA2 rLc5Wg9EG1xn/NwCldQZ6Y4B0ZAK0Enwa20+5Cd0B940V4qjFa+9JqQWoFAWll2wyBgXQFQIBYD 0Ufu111koF6xqi5cB+w== 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_02,2026-03-13_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 bulkscore=0 clxscore=1015 phishscore=0 spamscore=0 suspectscore=0 malwarescore=0 lowpriorityscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603160032 On 3/13/2026 7:26 PM, Krzysztof Kozlowski wrote: > On Thu, Mar 12, 2026 at 09:26:35PM +0530, Maulik Shah wrote: >> Interconnect from SCM device are optional and were added to get >> additional performance benefit. These nodes however delays the >> SCM firmware device probe due to dependency on interconnect and > > So fix drivers. Yes, will address in v2. > >> results in NULL pointer dereference for the users of SCM device >> driver APIs, such as PDC driver. >> >> Remove them from the scm device to unblock the user. >> >> Signed-off-by: Maulik Shah >> --- >> arch/arm64/boot/dts/qcom/hamoa.dtsi | 3 +-- >> 1 file changed, 1 insertion(+), 2 deletions(-) >> >> diff --git a/arch/arm64/boot/dts/qcom/hamoa.dtsi b/arch/arm64/boot/dts/qcom/hamoa.dtsi >> index d7596ccf63b90a8a002ad6e77c0fb2c1b32ec9c8..ebecf43e0d462c431540257e299e3ace054901fd 100644 >> --- a/arch/arm64/boot/dts/qcom/hamoa.dtsi >> +++ b/arch/arm64/boot/dts/qcom/hamoa.dtsi >> @@ -308,8 +308,7 @@ eud_in: endpoint { >> firmware { >> scm: scm { >> compatible = "qcom,scm-x1e80100", "qcom,scm"; >> - interconnects = <&aggre2_noc MASTER_CRYPTO QCOM_ICC_TAG_ALWAYS >> - &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>; >> + /* TODO: add interconnects */ > > NAK, interconnects were there already. So after applying your patch I > can just revert it immediately solving the TODO. Yes, this change will be dropped from v2 and instead will be using qcom_scm_is_available() to handle the dependencies. Thanks, Maulik