E2 Silk: No audio output from Audio Manager PoC

Building GDP-ivi9 for the Renesas E2 Silk board the Audio Manager PoC starts but there is no audio output.

Build Configuration:
BB_VERSION = "1.26.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "Ubuntu-14.04"
TARGET_SYS = "arm-poky-linux-gnueabi"
MACHINE = "silk"
DISTRO = "poky-ivi-systemd"
DISTRO_VERSION = "9.0.1"
TUNE_FEATURES = "arm armv7a vfp neon callconvention-hard cortexa7"
TARGET_FPU = "vfp-neon"
meta
meta-yocto
meta-yocto-bsp = "(detachedfrom900d7d6):900d7d6b59c36b2bdbd1c85febec99e80ab54f95"
meta-ivi
meta-ivi-bsp = "(detachedfromc6c4be2):c6c4be2e454545fd913ef39f5806990157e8d30a"
meta-oe
meta-multimedia
meta-filesystems
meta-ruby = "(detachedfroma7c1a2b):a7c1a2b0e6947740758136216e45ca6ca66321fc"
meta-qt5 = "(detachedfrom90919b9):90919b9d86988e7da01fa2c0a07246b5b5600a5d"
meta-genivi-demo = "(detachedfrom8d73cb3):8d73cb3c2922fd4bb7040fb13094e4d7aff25272"
meta-renesas
meta-rcar-gen2 = "genivi-9-bsp-1.10.0-weston-1.9.0:2984fd7399e992dcf0dd5c494c33e10b1184db05"
meta-rust = "(detachedfromf13ac9d):f13ac9d48ae928b761d7be204fa8f877d41e7099"

The journalctl output for audio is attached.

Our recent testing of the Yocto BSP shows that basic alsa audio output is working. So it will be worth checking the GDP-ivi9 audio configuration and whether the problem was present in GDP-ivi8. I think the latter may not have been tested as Silk was suffering from the audio mgr PoC crashes that were affecting multiple boards.