1 files changed, 58 insertions, 0 deletions
diff --git a/meta-agl-bsp/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0004-ADSP-enable-and-add-sound-hardware-abstraction_kf.patch b/meta-agl-bsp/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0004-ADSP-enable-and-add-sound-hardware-abstraction_kf.patch
new file mode 100644
index 000000000..92f5af88c
--- /dev/null
+++ b/meta-agl-bsp/meta-rcar-gen3-adas/recipes-kernel/linux/linux-renesas/0004-ADSP-enable-and-add-sound-hardware-abstraction_kf.patch
@@ -0,0 +1,58 @@
+The ADSP on Renesas SoCs required a reserved memory area to become
+enabled, and this needs to be done manually.
+
+This patch adds sound hardware abstraction information for the m3ulcb
+and m3ulcb-kf (kingfisher) device trees. This is helpful on-board the
+ADSP for dynamically determining sound hardware at runtime, allowing
+single binaries to be used between the two boards. 
+
+Future work will incorporate the h3ulcb and Salvator boards into the
+abstraction.
+
+Signed-off-by: Ronan Le Martret <ronan.lemartret@iot.bzh>
+Signed-off-by: Mark Farrugia <mark.farrugia@fiberdyne.com.au>
+---
+diff --git a/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb-kf.dts b/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb-kf.dts
+index de2390f009e7..4ccfa8315d17 100644
+--- a/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb-kf.dts
++++ b/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb-kf.dts
+@@ -15,6 +15,39 @@
+                     "renesas,r8a7796";
+ };
+ 
++
++&adsp {
++
++	/* ADSP playback setting for pcm3168 */
++	adsp_playback0: adsp,playback {
++		mode  = "tdm";
++		clock-mode = "master";
++		bus-width = <24>;
++		ssi = <3>;
++		bus-if = <0>;
++		channels = <8>;
++		pin-share-ssi = <4>;
++	};
++
++	/* ADSP capture setting for pcm3168 */
++	adsp_capture0: adsp,capture {
++		mode  = "tdm";
++		clock-mode = "slave";
++		bus-width = <24>;
++		ssi = <4>;
++		bus-if = <0>;
++		channels = <8>;
++		pin-share-ssi = <3>;
++	};
++
++	adsp,ports {
++		port@0 {
++			playback = <&adsp_playback0>;
++			capture  = <&adsp_capture0>;
++		};
++	};
++};
++
+ &du {
+        ports {
+                port@0 {