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([2a00:f41:c0d:408:fa88:abdb:17c2:cf24]) by smtp.gmail.com with ESMTPSA id br39-20020a056512402700b0051da1d9c47esm2124202lfb.64.2024.05.07.07.18.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 07 May 2024 07:18:49 -0700 (PDT) Message-ID: <6d9879aa-ae84-4ed0-8b5f-5609fd0c37b9@linaro.org> Date: Tue, 7 May 2024 16:18:46 +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 v4 3/3] arch: arm64: dts: sm8650-hdk: add support for the Display Card overlay To: Neil Armstrong , Bjorn Andersson , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Krzysztof Kozlowski Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Vladimir Zapolskiy References: <20240422-topic-sm8650-upstream-hdk-v4-0-b33993eaa2e8@linaro.org> <20240422-topic-sm8650-upstream-hdk-v4-3-b33993eaa2e8@linaro.org> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20240422-topic-sm8650-upstream-hdk-v4-3-b33993eaa2e8@linaro.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 4/22/24 10:48, Neil Armstrong wrote: > With the SM8650-HDK, a Display Card kit can be connected to provide > a VTDR6130 display with Goodix Berlin Touch controller. > > In order to route the DSI lanes to the connector for the Display > Card kit, a switch must be changed on the board. > > The HDMI nodes are disabled since the DSI lanes are shared with > the DSI to HDMI transceiver. > > Add support for this card as an overlay and apply it it at > build-time to the sm8650-hdk dtb. > > Reviewed-by: Vladimir Zapolskiy > Tested-by: Vladimir Zapolskiy > Signed-off-by: Neil Armstrong > --- After testing this on real hardware and getting some word, it turns out there's an issue with what seems like the SMMU ACL settings, preventing the display bridge I2C controller from being accessed and ending up in the board being unbootable, even without directly addressing the bridge. Not mergable as-is. Konrad