[PATCH v3 3/3] arm64: dts: renesas: r8a77995: draak: Add R-Car Sound support

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
To: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Magnus <magnus.damm@gmail.com>,
	linux-renesas-soc@vger.kernel.org,
	kazuya.mizuguchi.ks@renesas.com,
	yoshihiro.shimoda.uh@renesas.com, hoai.luu.ub@renesas.com,
	takeshi.kihara.df@renesas.com, harunobu.kurokawa.dn@renesas.com,
	khiem.nguyen.xt@renesas.com, hien.dang.eb@renesas.com
Subject: [PATCH v3 3/3] arm64: dts: renesas: r8a77995: draak: Add R-Car Sound support
Date: 27 May 2021 13:36:54 +0900	[thread overview]
Message-ID: <87mtsglrmi.wl-kuninori.morimoto.gx@renesas.com> (raw)
In-Reply-To: <87r1hslrno.wl-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 cross connected, and need each other.
ulcb/salvator boards assume drivers are probed cs2000 -> rcar_sound.
This draak board assumes drivers are probed rcar_sound -> cs2000.

Link: https://lore.kernel.org/r/87k0nyci2t.wl-kuninori.morimoto.gx@renesas.com
Link: https://lore.kernel.org/r/87sg2boi3h.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 .../arm64/boot/dts/renesas/r8a77995-draak.dts | 111 ++++++++++++++++++
 1 file changed, 111 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a77995-draak.dts b/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
index 6783c3ad0856..b87459a83fbc 100644
--- a/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
+++ b/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
@@ -124,6 +124,14 @@ reg_12p0v: regulator-12p0v {
 		regulator-always-on;
 	};
 
+	sound_card: sound {
+		compatible = "audio-graph-card";
+
+		dais = <&rsnd_port0	/* ak4613 */
+			/* HDMI is not yet supported */
+		>;
+	};
+
 	vga {
 		compatible = "vga-connector";
 
@@ -161,6 +169,34 @@ x12_clk: x12 {
 		#clock-cells = <0>;
 		clock-frequency = <74250000>;
 	};
+
+	x19_clk: x19 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <24576000>;
+	};
+};
+
+&audio_clk_a {
+	/*
+	 * This is same as cs2000,
+	 * but needed to avoid cs2000/rcar_sound probe dead-lock
+	 */
+
+	clock-frequency = <24576000>;
+};
+
+&audio_clk_b {
+	/*
+	 * X11 is connected to VI4_FIELD/SCIF_CLK/AUDIO_CLKB,
+	 * and R-Car Sound uses AUDIO_CLKB.
+	 * Note is that schematic indicates VI4_FIELD conection only
+	 * not AUDIO_CLKB at SoC page.
+	 * And this VI4_FIELD/SCIF_CLK/AUDIO_CLKB is connected to SW60.
+	 * SW60 should be 1-2.
+	 */
+
+	clock-frequency = <22579200>;
 };
 
 &avb {
@@ -236,6 +272,28 @@ &i2c0 {
 	pinctrl-names = "default";
 	status = "okay";
 
+	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>;
+			};
+		};
+	};
+
 	composite-in@20 {
 		compatible = "adi,adv7180cp";
 		reg = <0x20>;
@@ -342,6 +400,17 @@ adv7612_out: endpoint {
 		};
 	};
 
+	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 */
+	};
+
 	eeprom@50 {
 		compatible = "rohm,br24t01", "atmel,24c01";
 		reg = <0x50>;
@@ -449,6 +518,17 @@ 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";
@@ -474,6 +554,33 @@ &pwm1 {
 	status = "okay";
 };
 
+&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>;
+			};
+		};
+	};
+};
+
 &rwdt {
 	timeout-sec = <60>;
 	status = "okay";
@@ -502,6 +609,10 @@ &sdhi2 {
 	status = "okay";
 };
 
+&ssi4 {
+	shared-pin;
+};
+
 &usb2_phy0 {
 	pinctrl-0 = <&usb0_pins>;
 	pinctrl-names = "default";
-- 
2.25.1

