[COMMUNITY] Enable ADSP on M3ULCBeel_5.0.2eel_5.0.1eel_5.0.0eel/5.0.2eel/5.0.1eel/5.0.05.0.25.0.15.0.0

Implements the patches required to interface with the HiFi2 Xtensa ADSP
core. We need to remove the patch introduced by the ADAS layer since it
reserves ADSP-critical memory.

Bug-AGL: SPEC-1227

Change-Id: I5ec41ae5b232e3fd3e9bf63036601c0d09db3c13
Signed-off-by: Mark Farrugia <mark.farrugia@fiberdyne.com.au>

1 files changed, 30 insertions, 0 deletions

diff --git a/meta-rcar-gen3/recipes-kernel/linux/linux-renesas/0004-m3ulcb-ADSP-enable.patch b/meta-rcar-gen3/recipes-kernel/linux/linux-renesas/0004-m3ulcb-ADSP-enable.patch
new file mode 100644
index 0000000..5e54109
--- /dev/null
+++ b/meta-rcar-gen3/recipes-kernel/linux/linux-renesas/0004-m3ulcb-ADSP-enable.patch
@@ -0,0 +1,30 @@
+diff --git a/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts b/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts
+index a1f3c244b83e..b08e94430bea 100644
+--- a/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts
++++ b/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts
+@@ -49,6 +49,13 @@
+ 			reg = <0x00000000 0x54000000 0x0 0x03000000>;
+ 		};
+ 
++		/* For Audio DSP */
++		adsp_reserved: linux,adsp {
++			compatible = "shared-dma-pool";
++			reusable;
++			reg = <0x00000000 0x57000000 0x0 0x01000000>;
++		};
++
+ 		/* global autoconfigured region for contiguous allocations */
+ 		linux,cma {
+ 			compatible = "shared-dma-pool";
+@@ -388,6 +395,11 @@
+ 	status = "okay";
+ };
+ 
++&adsp {
++	status = "okay";
++	memory-region = <&adsp_reserved>;
++};
++
+ &scif2 {
+ 	pinctrl-0 = <&scif2_pins>;
+ 	pinctrl-names = "default";