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[188.141.3.146]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-483bd750607sm201855375e9.10.2026.02.27.00.58.55 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 27 Feb 2026 00:58:56 -0800 (PST) Message-ID: <5d880b56-a3fe-4677-9751-feeeea8dc2b1@linaro.org> Date: Fri, 27 Feb 2026 08:58:54 +0000 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 v9 1/7] dt-bindings: media: qcom,x1e80100-camss: Add optional PHY handle definitions To: Dmitry Baryshkov Cc: Bjorn Andersson , Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Robert Foss , Todor Tomov , Mauro Carvalho Chehab , Konrad Dybcio , Vladimir Zapolskiy , Bryan O'Donoghue , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, Krzysztof Kozlowski References: <20260226-b4-linux-next-25-03-13-dtsi-x1e80100-camss-v9-0-a59c3f037d0b@linaro.org> <20260226-b4-linux-next-25-03-13-dtsi-x1e80100-camss-v9-1-a59c3f037d0b@linaro.org> From: Bryan O'Donoghue Content-Language: en-US In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 27/02/2026 00:02, Dmitry Baryshkov wrote: > - Add CSI PHY as an optional device node under the camss node. > - If it is not present there, create it manually (by applying the > platform-specific overlay, by using OF_DYNAMIC or just by creating the > platform device manually) > - Migrate existing platforms into using the CSI PHY driver (ideally, one > by one), while still retaining the backwards compatibility with the > current camss ABI. Even though this is more work, I actually quite like this suggestion. Provided the DT compiler doesn't complain, I think I'll take this feedback. One reason for that is indeed as you say, we can reach back to older devices and give them some love. > - For platforms starting with N+1 (the next platform to be submitted or > merged(?) into the kernel) make CSI PHY node mandatory, keeping > backwards compatibility code limited to the currently defined affected > platforms, which unfortunately means the following list (I'd leave the > question on how to handle the patches currently in flight to the > maintainer's discretion): --- bod