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[188.141.3.169]) by smtp.gmail.com with ESMTPSA id c12-20020adfed8c000000b0032179c4a46dsm5248221wro.100.2023.09.22.13.47.08 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 22 Sep 2023 13:47:08 -0700 (PDT) Message-ID: Date: Fri, 22 Sep 2023 21:47:07 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/2] arm64: dts: qcom: apq8016-sbc-d3-camera: Convert to DT overlay Content-Language: en-US To: Stephan Gerhold , Bjorn Andersson Cc: Andy Gross , Konrad Dybcio , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20230922-apq8016-sbc-camera-dtso-v1-0-ce9451895ca1@gerhold.net> From: Bryan O'Donoghue In-Reply-To: <20230922-apq8016-sbc-camera-dtso-v1-0-ce9451895ca1@gerhold.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 22/09/2023 16:11, Stephan Gerhold wrote: > Follow the example of the recently added apq8016-sbc-usb-host.dtso and > convert apq8016-sbc-d3-camera-mezzanine.dts to a DT overlay that can be > applied on top of the apq8016-sbc.dtb. This makes it more clear that > this is not a special type of DB410c but just an addon board that can > be added on top. > > I also prepended a patch that cleans up the node names a bit. > > Signed-off-by: Stephan Gerhold > --- > Stephan Gerhold (2): > arm64: dts: qcom: apq8016-sbc-d3-camera: Use more generic node names > arm64: dts: qcom: apq8016-sbc-d3-camera: Convert to DT overlay > > arch/arm64/boot/dts/qcom/Makefile | 5 +++-- > ...nine.dts => apq8016-sbc-d3-camera-mezzanine.dtso} | 20 ++++++++++++++------ > 2 files changed, 17 insertions(+), 8 deletions(-) > --- > base-commit: 7236e86ce5c8198b01c30933c2334d07d877cf48 > change-id: 20230922-apq8016-sbc-camera-dtso-f247bea40f99 > > Best regards, db410c doesn't ship with a bootloader that is capable of applying a dtbo though, so this conversion mandates an updated or chainloaded bootloader or out-of-tree kernel patch to support. __adding__ is fine but, converting implies imposes a new requirement on the bootchain. Perhaps a middle road solution is to - Add, not convert a standalone dtbo or - Add a dtbo that includes the mezzanine dts but amends it Option 2 for preference but, I'm not sure the dts syntax can be meaningfully made to do that. --- bod