README: release notes for dey-2.4-r2-beta

Signed-off-by: Gonzalo Ruiz <Gonzalo.Ruiz@digi.com>

README.md

@@ -1,11 +1,14 @@
 # Digi Embedded Yocto (DEY) 2.4
-## Release 2.4-r1
+## Release 2.4-r2-beta
 
 This document provides information about Digi Embedded Yocto,
 Digi International's professional embedded Yocto development environment.
 
 Digi Embedded Yocto 2.4 is based on the Yocto Project(TM) 2.4 (Rocko) release.
 
+This is a beta release for the ConnectCore 8X SBC Express. The rest of the
+platforms are supported but have not been fully tested.
+
 For a full list of supported features and interfaces please refer to the
 online documentation.
 
@@ -58,6 +61,12 @@ Software for the following hardware platforms is in production support:
 * ConnectCore 6 Plus SBC
   * CC-SB-WMX-KK8D
 
+## ConnectCore 8X
+* ConnectCore 8X System-on-Module (SOM)
+  * [P/N TBD](https://www.digi.com/cc8x)
+* ConnectCore 8X SBC Express
+  * [P/N TBD](https://www.digi.com/cc8x)
+
 Previous versions of Digi Embedded Yocto include support for additional Digi
 hardware.
 
@@ -76,14 +85,28 @@ Documentation is available online on the Digi documentation site:
 * [ConnectCore 6UL SBC Pro](https://www.digi.com/resources/documentation/digidocs/90001547/default.htm)
 * [ConnectCore 6 SBC](https://www.digi.com/resources/documentation/digidocs/90001546/default.htm)
 * [ConnectCore 6 Plus SBC](https://www.digi.com/resources/documentation/digidocs/90002275/default.htm)
+* [ConnectCore 8X SBC Express](https://www.digi.com/cc8x/documentation)
 
 # Downloads
 
-* Demo images: ftp://ftp1.digi.com/support/digiembeddedyocto/2.4/r1/images/
+* Demo images: ftp://ftp1.digi.com/support/digiembeddedyocto/2.4/r2-beta/images/
-* Software Development Kit (SDK): ftp://ftp1.digi.com/support/digiembeddedyocto/2.4/r1/sdk/
+* Software Development Kit (SDK): ftp://ftp1.digi.com/support/digiembeddedyocto/2.4/r2-beta/sdk/
 
 # Release Changelog
 
+## 2.4-r2-beta
+
+* Added support for ConnectCore 8X platform. Supported features:
+    * Bluetooth and Wireless interfaces (STA, SoftAP, P2P, Concurrence)
+    * MCA: Reset, Watchdog, RTC, GPIOs and ADCs
+    * SBC Express interfaces: Ethernet, microSD, UART, I2C, CAN, SPI, USB host,
+      USB device, GPIOs, XBee, LVDS Display, Touch Screen controller
+    * Graphics and Video
+* Updated U-Boot to version 2017.03-r1
+* Fixed XBee RESET_N polarity assertion. Requires updating polarity of the
+``digi,reset-gpio`` property of node ``xbee`` on device tree files derived from
+ConnectCore 6UL SBC Pro to use polarity **GPIO_ACTIVE_LOW**
+
 ## 2.4-r1
 
 * Release based on [Yocto 2.4 (Rocko)](https://www.yoctoproject.org/downloads/core/rocko24) including:
@@ -160,6 +183,39 @@ boot a signed U-Boot only.
   * The Micrel PHY KSZ9031 may take between five and six seconds to
     auto-negotiate with Gigabit switches.
 
+## ConnectCore 8X
+
+* i.MX8QXP Processor
+  * The following processor features are not supported in this BSP release:
+    Power Management, PWM, ADC, RS485. They will be implemented in future releases.
+  * VPU unit is not fully functional, hence hardware video encoding/decoding is
+    not available. On this release, video encoding/decoding can be done via
+    software plugins, reducing the performance of video playback. This will be
+    available in future releases of the hardware.
+  * GPU maximum performance reduced. The maximum frequency targets are 850 MHz
+    for the shaders and 700 MHz for the core. However, in this hardware release
+    the maximum frequency is limited to 650 MHz for the shaders and 600 MHz for
+    the core, with the corresponding performance reduction. These targets will
+    be met in future releases of the hardware.
+  * BSDL operation is not supported. It will be available in future releases
+    of the hardware.
+* ConnectCore 8X System-on-Module (SOM)
+  * The UART connected to the Bluetooth chip on early versions of the ConnectCore
+    8X System-on-Module (hardware version = 1) cannot properly execute flow
+    control. To work around this issue, UART1 of these SOM versions has been
+    configured to operate at 115200 bps and without hardware flow control,
+    reducing the maximum throughput of this interface. It will be fixed in
+    future releases of the hardware.
+  * MCA firmware cannot be updated without a debugger on early versions of the
+    ConnectCore 8X System-on-Module (hardware version = 1). It will be fixed in
+    future releases of the hardware.
+  * MCA internal voltage reference cannot be enabled on early versions of the
+    ConnectCore 8X System-on-Module (hardware version = 1). It will be fixed in
+    future releases of the hardware.
+  * MCA tamper pins configuration is not supported. It will be available in
+    future releases.
+  * Trustfence (TM) is not supported. It will be available in future releases.
+
 # Support Contact Information
 
 For support questions please contact Digi Technical Support: