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[188.141.3.146]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-477b13f53f2sm32651735e9.1.2025.11.19.01.21.13 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 19 Nov 2025 01:21:16 -0800 (PST) Message-ID: Date: Wed, 19 Nov 2025 09:21:11 +0000 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 v6 1/5] media: dt-bindings: Add CAMSS device for Kaanapali To: Vijay Kumar Tumati , Konrad Dybcio , Hangxiang Ma , Loic Poulain , Robert Foss , Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Todor Tomov , Vladimir Zapolskiy , Mauro Carvalho Chehab Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, aiqun.yu@oss.qualcomm.com, tingwei.zhang@oss.qualcomm.com, trilok.soni@oss.qualcomm.com, yijie.yang@oss.qualcomm.com, Jingyi Wang , Atiya Kailany References: <20251113-add-support-for-camss-on-kaanapali-v6-0-1e6038785a8e@oss.qualcomm.com> <20251113-add-support-for-camss-on-kaanapali-v6-1-1e6038785a8e@oss.qualcomm.com> <37d0f89f-69be-45a7-90fa-347d6a3800bf@oss.qualcomm.com> <2d7ac7e8-ab69-44a6-b732-3657abf3a5a6@oss.qualcomm.com> <1f320bc6-ba7b-476a-b9fa-b5333f66530f@oss.qualcomm.com> From: Bryan O'Donoghue Content-Language: en-US In-Reply-To: <1f320bc6-ba7b-476a-b9fa-b5333f66530f@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 18/11/2025 21:45, Vijay Kumar Tumati wrote: >>> Hi Bryan, HLOS does not have access to those registers. They are >>> configured by the Hyp. >> If that's hyp, please add them. We already have platforms without >> Gunyah. Remember, bindings are defined once and for good and I wouldn't >> call it impossible that someone would want to run that configuration on >> Kaanapali some day >> >> Konrad > > Sure, if that's the standard. But even on systems without Gunyah (say, > KVM/PKVM), these will not be configured from HLOS in the regular flow. > It will be done from TZ. By the bootloader/s or by runtime TZ app ? --- bod