| =============================================================================== |
| U S E R M A N U A L for Robust BT-WLAN coex (RBC) |
| |
| Copyright (C) 2014-2018, Marvell International Ltd. |
| All Rights Reserved |
| =============================================================================== |
| |
| ############################### |
| |
| # Abbreviations and acronyms |
| |
| ############################### |
| RBC - Robust BT-WLAN co-existence |
| TMD - Time Distribute |
| SMPS - Spatial Multiplexing Power Save |
| |
| ############################### |
| |
| # Default RBC modes: |
| |
| ############################### |
| 1. For systems where BT and WLAN have seperate antennas, RBC mode is |
| automatically disabled in FW after detecting this from FEM cal data. e.g. |
| For 1x1 Dual-Ant system and 2x2 3-Ant system RBC mode is disabled. |
| 2. For systems where BT and WLAN share an antenna, RBC mode is automatically |
| enabled in FW after detecting this from FEM cal data. |
| Default modes: |
| 1x1 single antenna system: TMD RBC |
| 2x2 2-antenna system: 1x1 SMPS RBC |
| |
| |
| ################################# |
| |
| # 2x2 2-antenna system RBC modes |
| |
| ################################# |
| There are three mutually exclusive RBC modes for a 2x2 system. |
| The default RBC mode is 1x1 SMPS RBC. The required RBC mode must be |
| configured before starting uAP or associating in-STA. The mode cannot be |
| changed dynamically when any of these connections is active. The modes are |
| described below: |
| 1. 1x1 SMPS RBC mode: WLAN switches to 1x1 FEM when BT is turned on. Also, |
| in-STA goes to SMPS mode w.r.t. ext-AP. When BT is turned off, WLAN |
| switches back to 2x2 FEM setting and in-STA moves out of SMPS. |
| uAP starts bss with only 1-stream even BT is off because it cannot |
| dynamically move between 1-stream and 2-stream rates like in-STA. To start |
| uAP with 2-stream, RBC mode has to be disabled. |
| 2. 1x2 SMPS RBC mode: Similar as 1x1 SMPS RBC mode. WLAN switches to 1x2 FEM |
| when BT is turned on. In this mode, it is expected that when BT is not |
| actively transmitting, WLAN can receive on both the antennas to enhance |
| the range. Note that 1-stream rates are used for receive and transmit. |
| 3. 2x2 TMD RBC mode: WLAN uses 2x2 antenna setting and timeshares the antenna |
| with BT. |
| |
| ############################### |
| |
| # RBC mode select: |
| |
| ############################### |
| |
| User can use robust_btc.conf and hostcmd to select different RBC mode: |
| |
| hostcmd mode_get |
| hostcmd mode_timeshare |
| hostcmd mode_spatial |
| This command is used to get/set Robust BT Coex. |
| mode_get: get the current mode |
| mode_timeshare: set Robust BT Coex to timeshare mode (default on 1x1 chips) |
| mode_spatial: set Robust BT Coex to spatial mode (only for, and default on 2x2 chips) |
| |
| Usage: |
| mlanconfig mlanX hostcmd config/robust_btc.conf mode_get |
| mlanconfig mlanX hostcmd config/robust_btc.conf mode_timeshare |
| mlanconfig mlanX hostcmd config/robust_btc.conf mode_spatial |
| |
| hostcmd gpio_cfg |
| This command is used to enable/disable GPIO cfg. |
| gpio_cfg: enable/disable GPIO cfg for external bt request (default is enable with High Polarity) |
| |
| Usage: |
| mlanconfig mlanX hostcmd config/robust_btc.conf gpio_cfg |
| |
| hostcmd generictime |
| hostcmd a2dptime |
| hostcmd inquirytime |
| hostcmd ap_generictime |
| hostcmd ap_a2dptime |
| hostcmd ap_inquirytime |
| This command is used to configure the time slice of COEX (only works in timeshare mode) |
| generictime: configure the Bttime and Wlantime in Station Generic case |
| a2dptime: configure the Bttime and Wlantime in Station A2DP case |
| inquirytime: configure the Bttime and Wlantime in Station Inquiry case |
| ap_generictime: configure the Bttime and Wlantime in Ap Generic case |
| ap_a2dptime: configure the Bttime and Wlantime in Ap A2DP case |
| ap_inquirytime: configure the Bttime and Wlantime in Ap Inquiry case |
| |
| Usage: |
| mlanutl mlanX hostcmd config/robust_btc.conf generictime |
| mlanutl mlanX hostcmd config/robust_btc.conf a2dptime |
| mlanutl mlanX hostcmd config/robust_btc.conf inquirytim |
| mlanutl mlanX hostcmd config/robust_btc.conf ap_generictime |
| mlanutl mlanX hostcmd config/robust_btc.conf ap_a2dptime |
| mlanutl mlanX hostcmd config/robust_btc.conf ap_inquirytime |
