softdevice_controller: rev e3c28fd38774d2778fd3e3e5030e2b7ca61d5690

CHANGELOG.rst contains the list of changes.

Signed-off-by: Rubin Ingwer Gerritsen <rubin.gerritsen@nordicsemi.no>

softdevice_controller/CHANGELOG.rst

@@ -15,6 +15,7 @@ Main branch
 Added
 =====
 
+* Production support for the nRF54L Series. (DRGN-23325)
 * Support for the LE Set Path Loss Reporting Parameters and LE Set Path Loss Reporting Enable HCI commands. (DRGN-17376)
 * Support for generating connection anchor update event reports using the VS Conn Anchor Point Update Report Enable command.
   When enabled, one report is generated when the anchor point of a connection is updated.
@@ -23,10 +24,27 @@ Added
   See :c:func:`sdc_hci_cmd_vs_set_event_start_task`. (DRGN-20737)
 * Support for the LE Set Default Subrate and LE Subrate Request HCI commands. (DRGN-19745)
 * Support for ISO broadcaster handles in the :c:func:`sdc_hci_cmd_vs_zephyr_write_tx_power` and :c:func:`sdc_hci_cmd_vs_zephyr_read_tx_power` commands (DRGN-23441).
+* :ref:`Experimental <nrf:software_maturity>` support for Channel Sounding (CS) on nRF54L Series devices.
+  Currently, the |controller| only supports one subevent per event.
+  The following HCI commands are now supported:
+
+    * LE CS Read Local Supported Capabilities
+    * LE CS Read Remote Supported Capabilities
+    * LE CS Security Enable
+    * LE CS Set Default Settings
+    * LE CS Read Remote FAE Table
+    * LE CS Create Config
+    * LE CS Set Channel Classification
+    * LE CS Set Procedure Parameters
+    * LE CS Procedure Enable
+    * LE CS Test
+    * LE CS Test End
 
 Changes
 =======
 
+* Removed support for running the SoftDevice Controller on the nRF54L15 PDK v0.7.0 and earlier. (DRGN-23325)
+* Removed support for running the SoftDevice Controller on the Engineering A revision of the nRF54H20 SoC. (DRGN-23325)
 * The ``VersNr`` field in the ``LL_VERSION_IND`` packet now contains the value ``0x0E`` to indicate compatibility with Bluetooth Core Specification v6.0 (DRGN-23211).
 * The ``sdc_coex_adv_mode_configure`` API has been deprecated as it is not applicable to any supported coexistence interfaces. (DRGN-20876).
 * The ``sdc_hci_cmd_vs_coex_priority_config`` and ``sdc_hci_cmd_vs_coex_scan_mode_config`` vendor-specific HCI commands have been removed as they are not applicable to any supported coexistence interfaces. (DRGN-20876)
@@ -90,6 +108,9 @@ Bug fixes
 * Fixed an issue where LE Power Control was not being used for CISes which are not the first CIS in a CIG. (DRGN-23291)
 * Fixed an issue where the SoftDevice Controller in the peripheral role could terminate a connection due to a MIC failure during a valid encryption start procedure.
   This could only happen if the ``LL_ENC_RSP`` packet was corrupted due to on-air interference. (DRGN-23204)
+* Fixed an issue where received unframed Isochronous SDUs were not reported to be a SDU interval apart.
+  This could happen when the ISO interval is greater than the SDU interval and multiple SDUs can be received in a single ISO interval. (DRGN-23586)
+* Fixed an issue where the sleep clock accuracy communicated to the peer was too inaccurate if MPSL was initialized with a low frequency clock accuracy better than 20ppm. (DRGN-23693)
 
 nRF Connect SDK v2.7.0
 **********************

softdevice_controller/README.rst

@@ -66,6 +66,9 @@ The libraries are available as soft-float, softfp-float, and hard-float builds f
 +--------------------------------+-----------------+--------------+-----------+
 | Connection Subrating           |                 |              | X         |
 +--------------------------------+-----------------+--------------+-----------+
+| Channel Sounding               |                 |              | X         |
+| (experimental support)         |                 |              |           |
++--------------------------------+-----------------+--------------+-----------+
 
 .. note::
    The following limitations apply to the listed features:
@@ -74,7 +77,8 @@ The libraries are available as soft-float, softfp-float, and hard-float builds f
    * For Connection CTE Response, angle of arrival (AoA) is supported, but angle of departure (AoD) is not.
    * For Periodic Advertising Sync Transfer - Receiver, only one sync transfer reception may be in progress at any one time per link.
    * For the Isochronous Channels features, nRF52820 and nRF52833 are the nRF52 Series devices that support encrypting and decrypting the Isochronous Channels packets.
-   * For the nRF54H and nRF54L series, all Bluetooth features are experimental.
+   * For the nRF54H series, all Bluetooth features are experimental.
+   * For the Channel Sounding feature, support is experimental and only available for nRF54L Series devices.
 
 .. _sdc_proprietary_feature_support:
 
@@ -104,6 +108,7 @@ Proprietary feature support:
    doc/softdevice_controller
    doc/scheduling
    doc/isochronous_channels
+   doc/channel_sounding
    limitations
    CHANGELOG
    doc/api

softdevice_controller/doc/channel_sounding.rst

@@ -0,0 +1,47 @@
+.. _softdevice_controller_cs:
+
+LE Channel Sounding
+###################
+
+.. contents::
+   :local:
+   :depth: 2
+
+LE Channel Sounding (CS) is a feature defined in the `Bluetooth Core Specification`_.
+CS allows two devices in a connection to perform measurements of their communication channel, both the round trip time (RTT), and the phase and magnitude (as in-phase and quadrature (IQ) values) can be measured.
+The RTT and IQ values can then be sent to an application to calculate the distance between devices.
+
+Channel Sounding currently has :ref:`Experimental <nrf:software_maturity>` support in the |controller| for the nRF54L15 SoC.
+CS can be enabled by building with the :kconfig:option:`CONFIG_BT_CTLR_CHANNEL_SOUNDING` Kconfig option enabled.
+
+Developing with CS
+******************
+
+Currently, the :zephyr:code-sample:`bluetooth_hci_uart` sample is recommended to get started with Channel Sounding.
+Build the sample with the following command to enable the CS feature:
+
+.. code-block:: console
+
+   west build -b nrf54l15dk/nrf54l15/cpuapp --pristine -- -DCONFIG_BT_CTLR_CHANNEL_SOUNDING=y
+
+You can use the sample to run the following supported HCI commands over UART:
+
+ * LE CS Read Local Supported Capabilities
+ * LE CS Read Remote Supported Capabilities
+ * LE CS Security Enable
+ * LE CS Set Default Settings
+ * LE CS Read Remote FAE Table
+ * LE CS Create Config
+ * LE CS Set Channel Classification
+ * LE CS Set Procedure Parameters
+ * LE CS Procedure Enable
+ * LE CS Test
+ * LE CS Test End
+
+Experimental Limitations
+************************
+
+Currently, the following limitations apply to the :ref:`Experimental <nrf:software_maturity>` support of Channel Sounding:
+
+ * :ref:`radio coexistence <nrf:ug_radio_coex>` and :ref:`front-end modules <mpsl_fem>` are not supported.
+ * Only one subevent per event is supported in CS.

softdevice_controller/include/sdc.h

@@ -337,7 +337,7 @@ extern "C" {
  *
  * @param[in] count Maximum number of concurrent connections supporting CS procedure.
  */
-#define SDC_MEM_CS(count) ((count) > 0 ? (13 + (count)*7371) : 0)
+#define SDC_MEM_CS(count) ((count) > 0 ? (13 + (count) * 8907) : 0)
 
 /** @brief Maximum additional memory required to support Channel Sounding setup phase procedures
  *