RCP 917 - Multi-Protocol Release Version 2.15.0 (April 8, 2026) - Release Notes#

Wi-Fi 6 + BLE Linux Driver(RCP)

The SiWT917 RCP Driver provides Wi-Fi and BLE co-existence and packet traffic arbitration (PTA) features.

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Release Summary#

Key Features | Bug Fixes | Chip Enablement

Key Features#

  • Added KC and SRRC region selection support in PER mode for Wi-Fi and BLE.

Bug Fixes#

None

Chip Enablement#

  • OPN : SIWT917Y100XGAXA, Board: SiW917Y-RB4357C

Key Features#

New Features | Enhancements | Removed Features | Deprecated Features

Note: See Features Supported for a list of supported features.

New Features#

  • Added KC and SRRC region selection support in PER mode

Enhancements#

None

Removed Features#

None

Deprecated Features#

None

Bug Fixes#

None

Chip Enablement#

Chip Family OPNs / Boards / OPN Combinations Supported Modes Supported Host Interfaces
SiWx91x
  • OPN: SIWT917Y100XGAXA
  • Boards: SiW917Y-RB4357C
  • For External Hosts SI-EB8045B , SI-EB8045A + BRD8046A
  • RCP
 SDIO

Known Issues#

Multi-protocol#

  • MU retries in DL MU-MIMO are more in CoEx

  • Observed Wi-Fi throughput inconsistency (TPUT in Kbps) for STA(Wi-Fi Tx)+BLE Mode while doing BLE scan.

  • Observed BLE disconnection while initiating connection with an access point configured in CHINA region.

Limitations and Unsupported Features#

  • BLE may disconnect with Wi-Fi + BLE configuration and Wi-Fi continuous data transfer when the low BLE supervision timeout is configured. When the supervision timeout is configured with the value of 16 seconds, no disconnections are observed.

  • In Wi-Fi +BLE configuration with Wi-Fi disconnects, a BLE reconnection issue is observed (Refer the section 'Recommendations' for stable connections).