[PATCH 3/3] arm64: dts: renesas: r8a77995: draak: Add R-Car Sound support

[Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

This patch adds R-Car Sound support for D3 draak.

One note is that it is using different clock definition style
from ulcb/salvator boards to avoid verbose clocks settings
on rcar_sound node (see ulcb.dtsi  rcar_sound::clocks).

cs2000 and ADG are closs connected, and needs each other.
ulcb/salvator boards assume drivers are probed cs2000 -> rcar_sound.
This draak board assumes drivers are probed rcar_sound -> cs2000.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 .../arm64/boot/dts/renesas/r8a77995-draak.dts | 103 ++++++++++++++++++
 1 file changed, 103 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a77995-draak.dts b/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
index 6783c3ad0856..591fad289802 100644
--- a/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
+++ b/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
@@ -6,6 +6,11 @@
  * Copyright (C) 2017 Glider bvba
  */
 
+/*
+ * This assumes...
+ *	SW60 : 2-1
+ */
+
 /dts-v1/;
 #include "r8a77995.dtsi"
 #include <dt-bindings/gpio/gpio.h>
@@ -156,11 +161,25 @@ adv7123_out: endpoint {
 		};
 	};
 
+	sound_card: sound {
+		compatible = "audio-graph-card";
+
+		dais = <&rsnd_port0	/* ak4613 */
+			/* HDMI is not yet supported */
+		>;
+	};
+
 	x12_clk: x12 {
 		compatible = "fixed-clock";
 		#clock-cells = <0>;
 		clock-frequency = <74250000>;
 	};
+
+	x19_clk: x19 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <24576000>;
+	};
 };
 
 &avb {
@@ -347,6 +366,39 @@ eeprom@50 {
 		reg = <0x50>;
 		pagesize = <8>;
 	};
+
+	ak4613: codec@10 {
+		compatible = "asahi-kasei,ak4613";
+		#sound-dai-cells = <0>;
+		reg = <0x10>;
+		clocks = <&rcar_sound 0>; /* audio_clkout */
+
+		asahi-kasei,in1-single-end;
+		asahi-kasei,in2-single-end;
+		asahi-kasei,out1-single-end;
+		asahi-kasei,out2-single-end;
+		asahi-kasei,out3-single-end;
+		asahi-kasei,out4-single-end;
+		asahi-kasei,out5-single-end;
+		asahi-kasei,out6-single-end;
+
+		port {
+			ak4613_endpoint: endpoint {
+				remote-endpoint = <&rsnd_for_ak4613>;
+			};
+		};
+	};
+
+	cs2000: clk-multiplier@4f {
+		#clock-cells = <0>;
+		compatible = "cirrus,cs2000-cp";
+		reg = <0x4f>;
+		clocks = <&rcar_sound 1>, <&x19_clk>; /* audio_clkout_1, x19 */
+		clock-names = "clk_in", "ref_clk";
+
+		assigned-clocks = <&cs2000>;
+		assigned-clock-rates = <24576000>; /* 1/1 divide */
+	};
 };
 
 &i2c1 {
@@ -391,6 +443,46 @@ &ohci0 {
 	status = "okay";
 };
 
+&audio_clk_a {
+	/* same as cs2000 */
+	clock-frequency = <24576000>;
+};
+
+&audio_clk_b {
+	clock-frequency = <22579200>;
+};
+
+&rcar_sound {
+	pinctrl-0 = <&sound_pins>, <&sound_clk_pins>;
+	pinctrl-names = "default";
+
+	/* Single DAI */
+	#sound-dai-cells = <0>;
+
+	/* audio_clkout0/1 */
+	#clock-cells = <1>;
+	clock-frequency = <12288000 11289600>;
+
+	status = "okay";
+
+	ports {
+		rsnd_port0: port {
+			rsnd_for_ak4613: endpoint {
+				remote-endpoint = <&ak4613_endpoint>;
+				dai-format = "left_j";
+				bitclock-master = <&rsnd_for_ak4613>;
+				frame-master = <&rsnd_for_ak4613>;
+				playback = <&ssi3>, <&src5>, <&dvc0>;
+				capture  = <&ssi4>, <&src6>, <&dvc1>;
+			};
+		};
+	};
+};
+
+&ssi4 {
+	shared-pin;
+};
+
 &pfc {
 	avb0_pins: avb {
 		groups = "avb0_link", "avb0_mdio", "avb0_mii";
@@ -449,6 +541,17 @@ sdhi2_pins_uhs: sd2_uhs {
 		power-source = <1800>;
 	};
 
+	sound_pins: sound {
+		groups = "ssi34_ctrl", "ssi3_data", "ssi4_data_a";
+		function = "ssi";
+	};
+
+	sound_clk_pins: sound-clk {
+		groups = "audio_clk_a", "audio_clk_b",
+			 "audio_clkout", "audio_clkout1";
+		function = "audio_clk";
+	};
+
 	usb0_pins: usb0 {
 		groups = "usb0";
 		function = "usb0";
-- 
2.25.1