arm64: dts: rockchip: add spdif sound node for rock64

This patch adds sound card node for rock64. Currently we can support
S/PDIF only. It seems the lack of codec driver of rk3328 to enable
analog audio out.

Signed-off-by: Katsuhiro Suzuki <katsuhiro@katsuster.net>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

1 files changed, 29 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/rockchip/rk3328-rock64.dts b/arch/arm64/boot/dts/rockchip/rk3328-rock64.dts
index 5852061e497b..9ee4f57557f3 100644
--- a/arch/arm64/boot/dts/rockchip/rk3328-rock64.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3328-rock64.dts
@@ -62,6 +62,23 @@
                 regulator-min-microvolt = <5000000>;
                 regulator-max-microvolt = <5000000>;
         };
+
+        sound {
+                compatible = "audio-graph-card";
+                label = "rockchip,rk3328";
+                dais = <&spdif_p0>;
+        };
+
+        spdif-dit {
+                compatible = "linux,spdif-dit";
+                #sound-dai-cells = <0>;
+
+                port {
+                        dit_p0_0: endpoint {
+                                remote-endpoint = <&spdif_p0_0>;
+                        };
+                };
+        };
 };
 
 &cpu0 {
@@ -261,6 +278,18 @@
         status = "okay";
 };
 
+&spdif {
+        pinctrl-0 = <&spdifm0_tx>;
+        status = "okay";
+        #sound-dai-cells = <0>;
+
+        spdif_p0: port {
+                spdif_p0_0: endpoint {
+                        remote-endpoint = <&dit_p0_0>;
+                };
+        };
+};
+
 &tsadc {
         rockchip,hw-tshut-mode = <0>;
         rockchip,hw-tshut-polarity = <0>;