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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b976cf02b14sm542653166b.51.2026.03.16.03.49.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 16 Mar 2026 03:49:48 -0700 (PDT) Message-ID: Date: Mon, 16 Mar 2026 11:49:46 +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 v4 1/2] dt-bindings: phy: qcom: Add CSI2 C-PHY/DPHY schema To: Dmitry Baryshkov , Vladimir Zapolskiy Cc: Bryan O'Donoghue , Vinod Koul , Kishon Vijay Abraham I , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Neil Armstrong , Bryan O'Donoghue , linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260315-x1e-csi2-phy-v4-0-90c09203888d@linaro.org> <20260315-x1e-csi2-phy-v4-1-90c09203888d@linaro.org> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzE2MDA4MiBTYWx0ZWRfX42choIoVSR7U B9J4jEK4H3rBkSMhDfeDzgZzFbIAX3kWL41cGnKsMZ7XpWHutQPW3wKWnW3X93Sfp4sl6WO9v3e XVPN0dZ0nF4f1j6vA7G5v6l+A8WzMKtKYYpG+SlMWCMkinpqUXTCqTQQiU7eC6vtVropaS0NmFK /JAfuqtUHmKokv9PWcRGKRUtB3RPRse+M8MIuEqxpQZ1gOZP+SOBxFnqHmmlWMFFGlyFtdL0GcY KF5fnIuYHf6/rnnUNBli8V+TDzABQKNR7qE3i9ouT2q3qAbuTHca5RPK8PSGVb6Gwyj4mRX+LAA lyceArUHuXpA0t+/sKu88hKNRF9XwcrUsCTMKNvIzH2Yx93JEcLFI3b9VAsdmRrfMjc/dpTT8g+ OXv3MW3L1F0OXNPT6/8xpml3RF2V79vJj0X1nJXGeIhaRFWK6F5u2q7BaxOV4UyZAqrceVlQsBa 2wjibgfNsTORwus6SHw== X-Proofpoint-GUID: 7pb2QZ-RQtquc7dw_8my__MkZ581BU1W X-Authority-Analysis: v=2.4 cv=fLs0HJae c=1 sm=1 tr=0 ts=69b7e04e cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=KKAkSRfTAAAA:8 a=Rh3If-h6mBuovSfaGQ4A:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 a=cvBusfyB2V15izCimMoJ:22 X-Proofpoint-ORIG-GUID: 7pb2QZ-RQtquc7dw_8my__MkZ581BU1W X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-16_04,2026-03-13_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 priorityscore=1501 malwarescore=0 lowpriorityscore=0 suspectscore=0 impostorscore=0 clxscore=1015 adultscore=0 spamscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603160082 On 3/16/26 3:45 AM, Dmitry Baryshkov wrote: > On Mon, Mar 16, 2026 at 03:58:14AM +0200, Vladimir Zapolskiy wrote: >> On 3/16/26 01:52, Bryan O'Donoghue wrote: >>> Add a base schema initially compatible with x1e80100 to describe MIPI CSI2 >>> PHY devices. >>> >>> The hardware can support both C-PHY and D-PHY modes. The CSIPHY devices >>> have their own pinouts on the SoC as well as their own individual voltage >>> rails. >>> >>> The need to model voltage rails on a per-PHY basis leads us to define >>> CSIPHY devices as individual nodes. >>> >>> Two nice outcomes in terms of schema and DT arise from this change. >>> >>> 1. The ability to define on a per-PHY basis voltage rails. >>> 2. The ability to require those voltage. >>> >>> We have had a complete bodge upstream for this where a single set of >>> voltage rail for all CSIPHYs has been buried inside of CAMSS. >>> >>> Much like the I2C bus which is dedicated to Camera sensors - the CCI bus in >>> CAMSS parlance, the CSIPHY devices should be individually modelled. >>> >>> Signed-off-by: Bryan O'Donoghue >>> --- >>> .../bindings/phy/qcom,x1e80100-csi2-phy.yaml | 133 +++++++++++++++++++++ >>> 1 file changed, 133 insertions(+) >>> >>> + >>> + vdda-0p8-supply: >>> + description: Phandle to a 0.8V regulator supply to a PHY. >> >> On Hamoa the CSIPHY supply voltage is 0.88-0.92, so it is 0p9 rather than 0p8. > > What is its name in the schematics or in the datasheet? VDD_A_CSI_n_0P9 so vdda-0p9 seems fitting Konrad