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AJvYcCXgRPx+uqDNLfTPC7fVwaIPtASU5ep4EXCE/UxT4nAhkhcbSEB5SU0KIUgUh6TE2nL57eFiBZeSHz3s@vger.kernel.org X-Gm-Message-State: AOJu0Yw0sBzyGKJFbX1jXZJ/neq1VtLs6K2MTR3x4nhKFdJ0eqZrh45D dLXcMn4sM0Ehh84H7zdk6lUJCSQUBcrxPmIYlFtHReaRyREBFH2Vvqrpk5O2+o/w2gAsxJU11zL inxc= X-Google-Smtp-Source: AGHT+IHZgVCGFgEml8l2JE2qSNFWCtFv9ZqySVcQuZTYZQV4augsKxhgVOzAUHddOviPkYnNbJxEyg== X-Received: by 2002:a05:600c:3515:b0:431:5df7:b310 with SMTP id 5b1f17b1804b1-4319aca52f4mr228460695e9.8.1730547525576; Sat, 02 Nov 2024 04:38:45 -0700 (PDT) Received: from [192.168.0.35] ([176.61.106.227]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4327d6983ddsm93042935e9.44.2024.11.02.04.38.44 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 02 Nov 2024 04:38:44 -0700 (PDT) Message-ID: <787ae421-0df0-45ae-bc3f-762ad73b8216@linaro.org> Date: Sat, 2 Nov 2024 11:38:43 +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 6/6] arm64: dts: qcom: sdm845-db845c-navigation-mezzanine: Add cma heap for libcamera softisp support To: Kieran Bingham , Rob Clark Cc: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Depeng Shao , Vikram Sharma , Vladimir Zapolskiy , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Laurent Pinchart References: <20241025-b4-linux-next-24-10-25-camss-dts-fixups-v1-0-cdff2f1a5792@linaro.org> <20241025-b4-linux-next-24-10-25-camss-dts-fixups-v1-6-cdff2f1a5792@linaro.org> <173047431366.2974136.175546053701391124@ping.linuxembedded.co.uk> Content-Language: en-US From: Bryan O'Donoghue In-Reply-To: <173047431366.2974136.175546053701391124@ping.linuxembedded.co.uk> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 01/11/2024 15:18, Kieran Bingham wrote: > Presently with SoftISP being CPU only - physically contiguous memory is > not required. Yes, I've misinterpreted what we discussed, udmabuf should be enough on qcom. > Bryan, will this still be true when you have a GPU based ISP ? Will that > require physically contiguous memory ? Or will the mapping into the GPU > handle any required translations? I believe it should be fine because we do glTexImage2D on the way in ATM and have support for eglCreateImageKHR(.., .., .., .., .., EGL_DMA_BUF_PLANE0_FD_EXT, dma_fd); but in either case phys contig doesn't matter. --- bod