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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b723db0f1besm458938766b.31.2025.11.05.03.09.52 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 05 Nov 2025 03:09:53 -0800 (PST) Message-ID: Date: Wed, 5 Nov 2025 12:09:52 +0100 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 v5 2/2] arm64: dts: qcom: talos-evk: Add support for QCS615 talos evk board To: Tessolve Upstream , andersson@kernel.org, konradybcio@kernel.org Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20251104125126.1006400-1-tessolveupstream@gmail.com> <20251104125126.1006400-3-tessolveupstream@gmail.com> <27f51013-9276-4e41-b57d-fb0baaec5bc6@oss.qualcomm.com> <4e3b01fa-174b-4de3-a5ef-67f51f0b2033@gmail.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <4e3b01fa-174b-4de3-a5ef-67f51f0b2033@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: 51M8A84WM3s1nkPac_Fu-az9TN7kURup X-Proofpoint-GUID: 51M8A84WM3s1nkPac_Fu-az9TN7kURup X-Authority-Analysis: v=2.4 cv=YZKwJgRf c=1 sm=1 tr=0 ts=690b3083 cx=c_pps a=7E5Bxpl4vBhpaufnMqZlrw==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=6UeiqGixMTsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=qJVbOpFieQqE12gzr-oA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=pJ04lnu7RYOZP9TFuWaZ:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTA1MDA4MyBTYWx0ZWRfX6a2twk+r/bJc o3RS6if8EbeD+Qre/2GjgOmWdtSJ/uW90AuxvY39JfJz6+mAXdXKo7Ezu92tjruvIvVXCNO6jKC X2NcQj2v90zKx6L/YSqgP1N3TZ/yG5I90kvmww7XLUwQKp1iicxZjXYBMsyR+dC+kjXVmfqu5Vl Y6GjGKthK0hdPPcJd9T56Sba5AkGdyPDG7J11n6U4Euz/O4NrjFXSwFgR3P3bMtyn9rv9Z6iYjB Wrnr7v6vsjA1P/C0jZlqC+Dt9BWwqONTXDVXJ5mUqYp3j6kCfpHuGzBPgS7/LBGWTMTsdAiN1LV Nt79xXs7O7Jv5Mc25iker2rGUim4mujdVoh/+K2Wkjfuayxugz6NBcOwuDagNTxhBJI56UfpuW+ gUB5Fz7E9phKKhwh0FTJJQF7CL7eZQ== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-11-05_04,2025-11-03_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 lowpriorityscore=0 impostorscore=0 adultscore=0 priorityscore=1501 clxscore=1015 malwarescore=0 bulkscore=0 suspectscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2510240001 definitions=main-2511050083 On 11/5/25 11:01 AM, Tessolve Upstream wrote: > > > On 04/11/25 19:57, Konrad Dybcio wrote: >> On 11/4/25 1:51 PM, Sudarshan Shetty wrote: >>> Introduce the device tree support for the QCS615-based talos-evk >>> platform, which follows the SMARC (Smart Mobility ARChitecture) >>> standard. The platform is composed of two main hardware >>> components: the talos-evk-som and the talos-evk carrier board. >> >> How is the carrier board a separate entity from the "talos-evk.dts"? > > The talos-evk platform follows a modular SoM + carrier design. > In our current implementation: > talos-evk-som.dtsi — describes SoM-specific components. > talos-evk-cb.dtsi — represents the carrier board and includes the > SoM file, adding carrier-specific interfaces (micro SD, power button etc.). > talos-evk.dts — includes both the SoM and CB DTSIs and enables HDMI > display configuration. > talos-evk-lvds.dts — also includes both the SoM and CB DTSIs but enables > LVDS instead of HDMI. > > HDMI and LVDS share the same DSI output and cannot be used simultaneously. > Therefore, we provide separate top-level DTS files (talos-evk.dts for HDMI > and talos-evk-lvds.dts for LVDS), while keeping common board > logic in talos-evk-cb.dtsi. > > Hence, layer looks as below: > > talos-evk-som.dtsi > ├── talos-evk-cb.dtsi (includes som) > │ ├── talos-evk.dts (HDMI) > │ └── talos-evk-lvds.dts (LVDS) > > This ensures modularity, and properly models mutually exclusive display > configurations. And are both the LVDS display and HDMI converter on separate add-in boards? Konrad