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Wed, 15 Jul 2026 03:27:44 -0700 (PDT) X-Received: by 2002:ac8:5d4e:0:b0:51c:1744:edf0 with SMTP id d75a77b69052e-51cbf289286mr138516331cf.9.1784111263944; Wed, 15 Jul 2026 03:27:43 -0700 (PDT) Received: from [192.168.120.193] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c15cfac0f76sm1117074266b.33.2026.07.15.03.27.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 15 Jul 2026 03:27:42 -0700 (PDT) Message-ID: <986da1da-db2e-4d4a-b9d0-70482adaf4bd@oss.qualcomm.com> Date: Wed, 15 Jul 2026 12:27:40 +0200 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 v5 11/11] arm64: dts: qcom: shikra: Add gpio-reserved-ranges to tlmm To: Komal Bajaj , Vinod Koul , Frank Li , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Krzysztof Kozlowski , Georgi Djakov , Bjorn Andersson , Konrad Dybcio Cc: linux-arm-msm@vger.kernel.org, dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Anurag Pateriya References: <20260702-shikra-dt-m1-v5-0-f911ac92720c@oss.qualcomm.com> <20260702-shikra-dt-m1-v5-11-f911ac92720c@oss.qualcomm.com> <9c1aab59-14b2-4811-b778-8e96645bd65b@oss.qualcomm.com> <97b205e8-5ab7-4205-b1dc-cbcb0497987d@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <97b205e8-5ab7-4205-b1dc-cbcb0497987d@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=TMF1jVla c=1 sm=1 tr=0 ts=6a5760a1 cx=c_pps a=qKBjSQ1v91RyAK45QCPf5w==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=bddrti4C3Ac78WpyR4IA:9 a=QEXdDO2ut3YA:10 a=zZCYzV9kfG8A:10 a=NFOGd7dJGGMPyQGDc5-O:22 X-Proofpoint-GUID: _q38ouoxa6Xg3qspM5okRLCs1TMJl52T X-Proofpoint-ORIG-GUID: _q38ouoxa6Xg3qspM5okRLCs1TMJl52T X-Proofpoint-Spam-Info: AW1haW4tMjYwNzE1MDEwMiBTYWx0ZWRfX23hwgWuXvZNz nFuGQCT3mNnqDIqiK+6LyyuiWQofBKYkJGSDtHKWQfSrste84XfmrrWJuHzxriBhfxhDQcJBxYL NMMXek17LRf5tGfNnFr/qEWAo6HyNw8= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzE1MDEwMiBTYWx0ZWRfXwYfCPLQANVWJ 3RCIRfO4RoUMPgo35N/E0WPidT7PriZSenY8BQ9f5iceQUSRcsa4YrKPv6akMsBj/eWGlCWoudV HUAXkFIIl1HmzCCenDmiVV3cgCxyEkNEyd6gu7G1xYhmGp3NRGd0DAlYAIDscS+V65yNbqhcPDg 9iyMeOsRaBdiz0jvCJiXfjVMm1B1IDqTftfdjbznfX7G2WdEdrRRlsgY/VJuQUVdueau3qRbSiX ZEd9fUKd5fXpXIkAGFpwvLdG0qZv9tGzcrKmFA9f5aXS8zjY3J6P9WDwNSbuUlH2+ysnrrKoU9N gu3fDvyaNBpHl0MRq165zk6oR9utj+LQex329argGxD8ia0Qf17BMjsRQnCKp/igQg7BNZJxvOO jU866rBn+uxyp870yBL65e7OF5KjS6xdxMc1OEnuOa6qkKIo7azzPjj1i0VL9u7hwmaNwbB5/jt fAG3jqlcGVUcgAqWOMg== 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=2026-07-15_02,2026-07-14_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 adultscore=0 phishscore=0 suspectscore=0 impostorscore=0 priorityscore=1501 bulkscore=0 spamscore=0 malwarescore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607150102 On 7/7/26 6:36 PM, Komal Bajaj wrote: > On 7/2/2026 4:25 PM, Konrad Dybcio wrote: >> On 7/2/26 11:50 AM, Komal Bajaj wrote: >>> Add gpio-reserved-ranges property to the tlmm node for all three >>> Shikra EVK variants (CQM, CQS, IQS) to mark GPIOs used by the >>> SoC internally and not available for general use. >> These are generally added to prevent non-secure access upon TLMM >> probe, i.e. the board won't boot if some of them are not protected. >> >> I assume the proposed set contains both ones that are _absolutely >> forbidden_ for Linux to touch, but also ones that are dedicated to >> some specific purpose that Linux _shouldn't_ touch. > > Yes, some GPIOs are reserved for secure-world use and are therefore not accessible from the non-secure world. > I will update the commit message accordingly. I'm not sure how to read your response. In other words - is this patch boot-critical? Konrad