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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=XNkAjwhE c=1 sm=1 tr=0 ts=6a6217d4 cx=c_pps a=DUEm7b3gzWu7BqY5nP7+9g==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=mSxn-Q1uSbZy4lC67FIA:9 a=QEXdDO2ut3YA:10 a=-aSRE8QhW-JAV6biHavz:22 X-Proofpoint-ORIG-GUID: kFb_f58a2yWNf6YvnisouVsnvd2sRtL9 X-Proofpoint-GUID: kFb_f58a2yWNf6YvnisouVsnvd2sRtL9 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzIzMDEzMyBTYWx0ZWRfX7H8s7xfkc0a3 Q6pEn/Hv8lsyDFp5OO6Bt6UCGaHTBvB78Lq1yAGOjpJnrNzUxJP3/4WBn/R6/219sXlzG4SQKxA sfwQG3ikWy+n8VL71oeUi6KRin7i6GQ= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzIzMDEzMyBTYWx0ZWRfX+T8mpPKB9g18 8ZkRlfWabFP7D4Cm9hRuBBbTEZPyn0oorOxQPB8wc7XDEdtRbhfQj4MjAGvVFTS6wj7gPjNQJcr zn0gWhjNlhOOxXrKJDoL8YD3+mNyjn0jVXHCrW2SVaFB8BmODs0cYyZr5C84VWAA6QVLlDFssm5 iKikvQYwkrKrPz9yPJCel9nA0yOQtdbc7KHLf4v4it7aF5WqMGdYrXODOYidDiiBuVL/ZOh3B7I vcUatQeqeSIwWip9SE3+PEZZv6CuSTnFO68Ey2lyfj9eszRUT1vS1f85VTCsayO93viye9ky77Y JJE2RzjE3gBXNucMpT22ZSw6hVPnvjK+DwSh4TREau8ALQkWWkHT7pkcG/YNFLtCeGPnSwA3Q3C rYZBXRP/lIm5cDGYIKYfYEUVnP2AWBAnWgoXiodMmcj/uh5xgvtTID2f69WEAMjRZhlck2pa19C Pcr87tJvEJQTsA5ducw== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-23_04,2026-07-22_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 impostorscore=0 suspectscore=0 bulkscore=0 clxscore=1015 lowpriorityscore=0 phishscore=0 priorityscore=1501 malwarescore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607230133 On 7/23/26 3:28 PM, Srinivas Kandagatla wrote: > On 7/23/26 10:14 AM, Konrad Dybcio wrote: >> On 7/23/26 1:42 AM, Srinivas Kandagatla wrote: >>> Describe the WCD9378 SDCA peripheral node (compatible sdw20217011000) >>> driven by the wcd9378-sdca codec driver for headphone playback, headset >>> mic capture and jack detection via the SimpleJack SDCA function type. >>> >>> WCD9378 codec can be wired up in 2 different modes. >>> "mobile mode" on phone/tablet SoCs is enumerated as tx and rx device, >>> each of which has dedicated control and data lines. >>> "compute mode" on compute platforms such as Glymur is enumerated as >>> single standard MIPI SDCA class device. >> >> Does this require a different hardware wiring, or is that just a >> difference for the driver? If the latter, can we choose whichever >> mode we want (i.e. use compute mode on the Fairphone or use mobile >> mode on a laptop, depending on what the OS supports)? > > AFAIU, Its not possible to change it because its fused and this also > brings in some physical bus level changes to soundwire aswell. > Ex: on compute we have one control lane for 2 soundwire masters driving > 4 data lanes. on mobile every soundwire master has dedicated control and > data lanes.. Bottom line is its not possible. Ah, sad. Thanks for explaining Konrad > However w.r.t to driver given that is same IP, I wanted to explore if we > can have a single driver for both.