[PATCH] arm: dts: hummingboard2: convert onboard audio to simple-audio-card

[Matt Porter]

The HB2 onboard audio currently makes use of the imx-audio-sgtl5000
binding. This binding does not support auxiliary audio devices such
as external amplifiers. The simple-audio-card binding does support
this property which allows systems incorporating the HB2 to easily
add an auxiliary device that's attached to the HB2 audio jack with
an overlay. Convert HB2 to use simple-audio-card for the onboard
audio to allow for this additional flexibility.

Signed-off-by: Matt Porter <mporter at konsulko.com>
---
 arch/arm/boot/dts/imx6qdl-hummingboard2.dtsi | 48 +++++++++++++++++++++++-----
 1 file changed, 40 insertions(+), 8 deletions(-)

diff --git a/arch/arm/boot/dts/imx6qdl-hummingboard2.dtsi b/arch/arm/boot/dts/imx6qdl-hummingboard2.dtsi
index dffbc92e0023..587251ab76ec 100644
--- a/arch/arm/boot/dts/imx6qdl-hummingboard2.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-hummingboard2.dtsi
@@ -38,6 +38,7 @@
  *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  *     OTHER DEALINGS IN THE SOFTWARE.
  */
+#include <dt-bindings/sound/fsl-imx-audmux.h>
 
 / {
 	chosen {
@@ -145,22 +146,52 @@
 		vin-supply = <&v_5v0>;
 	};
 
-	sound-sgtl5000 {
-		audio-codec = <&sgtl5000>;
-		audio-routing =
+	audio: sound-sgtl5000 {
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "On-Board Codec";
+		simple-audio-card,format = "i2s";
+		simple-audio-card,bitclock-master = <&sound_codec>;
+		simple-audio-card,frame-master = <&sound_codec>;
+		simple-audio-card,widgets =
+			"Microphone", "Mic Jack",
+			"Headphone", "Headphone Jack";
+		simple-audio-card,routing =
 			"MIC_IN", "Mic Jack",
 			"Mic Jack", "Mic Bias",
 			"Headphone Jack", "HP_OUT";
-		compatible = "fsl,imx-audio-sgtl5000";
-		model = "On-board Codec";
-		mux-ext-port = <5>;
-		mux-int-port = <1>;
-		ssi-controller = <&ssi1>;
+
+		sound_cpu: simple-audio-card,cpu {
+			sound-dai = <&ssi1>;
+		};
+
+		sound_codec: simple-audio-card,codec {
+			sound-dai = <&sgtl5000>;
+		};
 	};
 };
 
 &audmux {
 	status = "okay";
+
+	ssi1 {
+		fsl,audmux-port = <0>;
+		fsl,port-config = <
+			(IMX_AUDMUX_V2_PTCR_SYN |
+			 IMX_AUDMUX_V2_PTCR_TFSEL(4) |
+			 IMX_AUDMUX_V2_PTCR_TCSEL(4) |
+			 IMX_AUDMUX_V2_PTCR_TFSDIR |
+			 IMX_AUDMUX_V2_PTCR_TCLKDIR)
+			 IMX_AUDMUX_V2_PDCR_RXDSEL(4)
+		>;
+	};
+
+	pins5 {
+		fsl,audmux-port = <4>;
+		fsl,port-config = <
+			IMX_AUDMUX_V2_PTCR_SYN
+			IMX_AUDMUX_V2_PDCR_RXDSEL(0)
+		>;
+	};
 };
 
 &ecspi2 {
@@ -193,6 +224,7 @@
 		compatible = "fsl,sgtl5000";
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_hummingboard2_sgtl5000>;
+		#sound-dai-cells = <0>;
 		reg = <0x0a>;
 		VDDA-supply = <&v_3v2>;
 		VDDD-supply = <&vcc_1p8>;
-- 
2.11.0