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-rw-r--r--meta-agl-bsp/meta-rcar-gen3/recipes-kernel/linux/files/0004-ADSP-enable-and-add-sound-hardware-abstraction.patch121
1 files changed, 121 insertions, 0 deletions
diff --git a/meta-agl-bsp/meta-rcar-gen3/recipes-kernel/linux/files/0004-ADSP-enable-and-add-sound-hardware-abstraction.patch b/meta-agl-bsp/meta-rcar-gen3/recipes-kernel/linux/files/0004-ADSP-enable-and-add-sound-hardware-abstraction.patch
new file mode 100644
index 000000000..e0e726994
--- /dev/null
+++ b/meta-agl-bsp/meta-rcar-gen3/recipes-kernel/linux/files/0004-ADSP-enable-and-add-sound-hardware-abstraction.patch
@@ -0,0 +1,121 @@
+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: 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
+@@ -17,3 +17,35 @@
+ compatible = "shimafuji,kingfisher", "renesas,m3ulcb",
+ "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>;
++ };
++ };
++};
+\ No newline at end of file
+diff --git a/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts b/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts
+index 1cd64c1b3b31..71e59da3528d 100644
+--- a/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts
++++ b/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts
+@@ -45,11 +45,18 @@
+ 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";
+ reusable;
+- reg = <0x00000000 0x57000000 0x0 0x19000000>;
++ reg = <0x00000000 0x58000000 0x0 0x18000000>;
+ linux,cma-default;
+ };
+
+@@ -110,6 +117,42 @@
+ "dclkin.0", "dclkin.1", "dclkin.2";
+ };
+
++&adsp {
++ status = "okay";
++ clock-frequency = <12288000 11289600>;
++ audio-clocks = <22579200 24576000>;
++ memory-region = <&adsp_reserved>;
++
++ /* ADSP playback setting for ak4613 */
++ adsp_playback0: adsp,playback {
++ mode = "i2s";
++ clock-mode = "master";
++ bus-width = <16>;
++ ssi = <0>;
++ bus-if = <0>;
++ channels = <2>;
++ pin-share-ssi = <1>;
++ };
++
++ /* ADSP capture setting for ak4613 */
++ adsp_capture0: adsp,capture {
++ mode = "i2s";
++ clock-mode = "slave";
++ bus-width = <16>;
++ ssi = <1>;
++ bus-if = <0>;
++ channels = <2>;
++ pin-share-ssi = <0>;
++ };
++
++ adsp,ports {
++ port@0 {
++ playback = <&adsp_playback0>;
++ capture = <&adsp_capture0>;
++ };
++ };
++};
++
+ &vspb {
+ status = "okay";
+ };