alsa-state: Fix HDMI for i.MX 8M

Channel mapping on HDMI was incorrect for 4 and 8 channels.
Create a PCM device so alsa-lib will remap in user space.

Signed-off-by: Tom Hochstein <tom.hochstein@nxp.com>

1 files changed, 30 insertions, 0 deletions

diff --git a/recipes-bsp/alsa-state/alsa-state/imx/asound.conf b/recipes-bsp/alsa-state/alsa-state/imx/asound.conf
index 0f9d0c850..c511018e9 100644
--- a/recipes-bsp/alsa-state/alsa-state/imx/asound.conf
+++ b/recipes-bsp/alsa-state/alsa-state/imx/asound.conf
@@ -427,3 +427,33 @@ pcm.sai1to4{
         bindings.2 1
         bindings.3 9
 }
+
+pcm.cdnhdmi4ch {
+        type dshare
+        slave {
+                pcm "hw:3,0"
+                channels 4
+        }
+        ipc_key 5144458
+        bindings.0 0
+        bindings.1 2
+        bindings.2 1
+        bindings.3 3
+}
+
+pcm.cdnhdmi8ch {
+        type dshare
+        slave {
+                pcm "hw:3,0"
+                channels 8
+        }
+        ipc_key 5144458
+        bindings.0 0
+        bindings.1 4
+        bindings.2 1
+        bindings.3 5
+        bindings.4 2
+        bindings.5 6
+        bindings.6 3
+        bindings.7 7
+}