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Wed, 04 Nov 2026 21:32:27 -0800 (PST) Received: from [10.206.111.19] ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-8b09b569495sm1577758b3a.37.2026.11.04.21.32.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 04 Nov 2026 21:32:26 -0800 (PST) Message-ID: Date: Thu, 5 Nov 2026 11:02:20 +0530 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/2] dt-bindings: media: qcom,glymur-camss: Use CSIPHY indices for ports To: Krzysztof Kozlowski Cc: Bryan O'Donoghue , Vladimir Zapolskiy , Loic Poulain , Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bryan O'Donoghue , linux-arm-msm@vger.kernel.org, linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Suresh Vankadara , Vikram Sharma References: <20261102-glymur_camss-v1-0-fcb619fc7319@oss.qualcomm.com> <20261102-glymur_camss-v1-1-fcb619fc7319@oss.qualcomm.com> <20261104-real-nebulous-ostrich-017e92@quoll> <72064a9a-1b2e-4c24-99e2-2cc15a8dd7f1@oss.qualcomm.com> Content-Language: en-US From: Nihal Kumar Gupta In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=ZbmIpcVA c=1 sm=1 tr=0 ts=6aec14ec cx=c_pps a=WW5sKcV1LcKqjgzy2JUPuA==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=IkcTkHD0fZMA:10 a=zJRp6_cAMcgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=iBD9WU1rH6yjH3nr7zsA:9 a=QEXdDO2ut3YA:10 a=OpyuDcXvxspvyRM73sMx:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMTA1MDAyMSBTYWx0ZWRfX2prWJFbuuoLO 50IcYZkdcJQHTULvA5Vwy4mwKJbOK0tb0JjTf/7vqKjBRyh9KnpFEFDTtNFUdzJGhtr90/dCC31 d/i+CG62lzG8B9JX+Y9ROBVzM0H3lUeI53JGHLyp/92JpDD60a+Xt3h5YgV4shikujRR7TUKV+H w8RgFHE51l9LBTukC6Ir/yBExsr9a4aaF+Fbrn5w2z1wnT4XTrA/RimVTAhQL9kXz+05pxRzAwD 1uStRdFD5gluAdkLMmIO1SmvkCPWqFo3x/vsAIBVa7jHl19QdYqK9XHdUAPFTpsnlBUZVFMXu4b uQQuAYsD6AoxHS39AcJRT2QPyE1YYTuEd+JiWA/Zitxdcf4aY7b8xSqFNrnLONuuA3mL1khARv7 x9nv7bEqOYf27J2cX1x54R5/KTIwLuwi+hR9QRX8pqYBmASwZFEQOLwG+llvRkbhdRujQppS+w2 OCrARNc1u1+2wZEBbXw== X-Proofpoint-Spam-Info: AW1haW4tMjYxMTA1MDAyMSBTYWx0ZWRfX/laWJBYk6sdc eOKMNEXxTZIVfCLIahZ4DrD7+Z5iZJGBWiawUsLzyJvpaQbEPSRqydlQTQY29PD6udWkCvAiA1M PRLi0tlUg4/c6VFPN6nms0qg1Vjk6io= X-Proofpoint-ORIG-GUID: SiiYDVzj4EaZVyGQF7TSQ8nYJg4dgyGl X-Proofpoint-GUID: SiiYDVzj4EaZVyGQF7TSQ8nYJg4dgyGl X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-11-05_01,2026-11-04_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 impostorscore=0 spamscore=0 priorityscore=1501 clxscore=1015 phishscore=0 suspectscore=0 malwarescore=0 bulkscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610300000 definitions=main-2611050021 On 04-11-2026 21:42, Krzysztof Kozlowski wrote: >>>> Glymur describes CSI2 PHYs as standalone nodes, but the CAMSS binding >>>> still models CSIPHY4 as port@3 from the X1E80100 csiphy_res[] layout, >>>> where entry 3 carried CSIPHY id 4. >>> You also remove port 2 without explanation. >>> >>> >>>> Describe the hardware connection directly by allowing ports 0, 1 and 4, >>>> and using port@4 for CSIPHY4. >>> All this is confusing, why do you introduce gaps? What is the reason? >>> Your datasheet naming does not matter. >> Glymur CAMSS has populated inputs for CSIPHY0, CSIPHY1 and CSIPHY4, so I >> used a sparse pattern for those ports only. > port@0 is CSIPHY0 > port@1 is CSIPHY1 > port@2 is CSIPHY4 > > What is the problem exactly you are solving? > The problem is that CSIPHY4 is connected to CAMSS interface 4, so the graph should describe it as port@4, not port@2. The previous port@3 description only worked through the X1E80100 resource table indirection: port@3 -> csiphy_res[3] -> .csiphy.id = 4 -> CSID selects CSIPHY4 New standalone PHY path: port@4 -> no csiphy_res[] lookup -> port number is id 4 -> CSID selects CSIPHY4 >> That is confusing for the schema. I will allow the continuous range >> port@0 through port@4 and keep the example limited to the populated >> Glymur ports. -- Regards, Nihal Kumar Gupta