overlays: Add applepi-dac overlay

See: https://github.com/raspberrypi/linux/issues/2302

Signed-off-by: Phil Elwell <phil@raspberrypi.org>

diff --git a/arch/arm/boot/dts/overlays/Makefile b/arch/arm/boot/dts/overlays/Makefile
index 758fc6e2cc2764f28e3c50f98a332349bdec86e0..f25c80c367176921b4aa58931885045f9b7923e3 100644 (file)
--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -11,6 +11,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
        allo-digione.dtbo \
        allo-piano-dac-pcm512x-audio.dtbo \
        allo-piano-dac-plus-pcm512x-audio.dtbo \
+       applepi-dac.dtbo \
        at86rf233.dtbo \
        audioinjector-addons.dtbo \
        audioinjector-wm8731-audio.dtbo \

diff --git a/arch/arm/boot/dts/overlays/README b/arch/arm/boot/dts/overlays/README
index a162494d53442de245db7a14f0f53eb449becd4e..2a581b499821c46f2c948e674bbef2dfe7e14246 100644 (file)
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -337,6 +337,12 @@ Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
                                 better voice quality. (default Off)
 
 
+Name:   applepi-dac
+Info:   Configures the Orchard Audio ApplePi-DAC audio card
+Load:   dtoverlay=applepi-dac
+Params: <None>
+
+
 Name:   at86rf233
 Info:   Configures the Atmel AT86RF233 802.15.4 low-power WPAN transceiver,
         connected to spi0.0

diff --git a/arch/arm/boot/dts/overlays/applepi-dac-overlay.dts b/arch/arm/boot/dts/overlays/applepi-dac-overlay.dts
new file mode 100644 (file)
index 0000000..fc02b29
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/applepi-dac-overlay.dts
@@ -0,0 +1,57 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+    compatible = "brcm,bcm2708";
+
+    fragment@0 {
+        target = <&sound>;
+        __overlay__ {
+            compatible = "simple-audio-card";
+            simple-audio-card,name = "ApplePi-DAC";
+
+            status = "okay";
+
+            playback_link: simple-audio-card,dai-link@1 {
+                format = "i2s";
+
+                p_cpu_dai: cpu {
+                    sound-dai = <&i2s>;
+                    dai-tdm-slot-num = <2>;
+                    dai-tdm-slot-width = <32>;
+                };
+
+                p_codec_dai: codec {
+                    sound-dai = <&codec_out>;
+                };
+            };
+        };
+    };
+
+    fragment@1 {
+        target-path = "/";
+        __overlay__ {
+            codec_out: pcm1794a-codec {
+                #sound-dai-cells = <0>;
+                compatible = "ti,pcm1794a";
+                status = "okay";
+            };
+        };
+    };
+
+    fragment@2 {
+        target = <&i2s>;
+        __overlay__ {
+            #sound-dai-cells = <0>;
+            status = "okay";
+        };
+    };
+};
+
+/*
+   Written by: Leonid Ayzenshtat
+   Company: Orchard Audio (www.orchardaudio.com)
+
+   compile with:
+   dtc -@ -H epapr -O dtb -o ApplePi-DAC.dtbo -W no-unit_address_vs_reg ApplePi-DAC.dts
+*/