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-rw-r--r--meta-rcar-gen2/recipes-kernel/linux/linux-renesas/0006-ARM-shmobile-porter-Sound-DMA-support-via-DVC-on-DTS.patch54
1 files changed, 54 insertions, 0 deletions
diff --git a/meta-rcar-gen2/recipes-kernel/linux/linux-renesas/0006-ARM-shmobile-porter-Sound-DMA-support-via-DVC-on-DTS.patch b/meta-rcar-gen2/recipes-kernel/linux/linux-renesas/0006-ARM-shmobile-porter-Sound-DMA-support-via-DVC-on-DTS.patch
new file mode 100644
index 0000000..e9242d9
--- /dev/null
+++ b/meta-rcar-gen2/recipes-kernel/linux/linux-renesas/0006-ARM-shmobile-porter-Sound-DMA-support-via-DVC-on-DTS.patch
@@ -0,0 +1,54 @@
+From cff2d1cef1b620c0bafeefd127c8d11a6579aced Mon Sep 17 00:00:00 2001
+From: Biju Das <biju.das@bp.renesas.com>
+Date: Thu, 2 Apr 2015 14:04:22 +0100
+Subject: [PATCH 6/7] ARM: shmobile: porter: Sound DMA support via DVC on DTS
+
+DMA transfer uses DVC
+
+ DMA DMApp
+[MEM] -> [SRC] -> [DVC] -> [SSIU] -> [SSI]
+
+ DMA DMApp
+[MEM] <- [DVC] <- [SRC] <- [SSIU] <- [SSI]
+
+This change is identical to the koelsch patch "ARM: shmobile: koelsch: Sound DMA support via DVC on DTS"
+from Kuninori Morimoto and backported to 3.10
+Signed-off-by: Biju Das <biju.das@bp.renesas.com>
+---
+ arch/arm/boot/dts/r8a7791-porter.dts | 13 ++++++++++---
+ 1 file changed, 10 insertions(+), 3 deletions(-)
+
+diff --git a/arch/arm/boot/dts/r8a7791-porter.dts b/arch/arm/boot/dts/r8a7791-porter.dts
+index f35cc33..fcb9edd 100644
+--- a/arch/arm/boot/dts/r8a7791-porter.dts
++++ b/arch/arm/boot/dts/r8a7791-porter.dts
+@@ -14,7 +14,14 @@
+ *
+ * This command is required when Playback/Capture
+ *
+- * amixer set "LINEOUT Mixer DACL" on
++ * amixer set "LINEOUT Mixer DACL" on
++ * amixer set "DVC Out" 100%
++ * amixer set "DVC In" 100%
++ *
++ * You can use Mute
++ *
++ * amixer set "DVC Out Mute" on
++ * amixer set "DVC In Mute" on
+ */
+
+ /dts-v1/;
+@@ -421,8 +428,8 @@
+
+ rcar_sound,dai {
+ dai0 {
+- playback = <&ssi0 &src0>;
+- capture = <&ssi1 &src1>;
++ playback = <&ssi0 &src0 &dvc0>;
++ capture = <&ssi1 &src1 &dvc1>;
+ };
+ };
+ };
+--
+1.7.9.5
+