[PATCH 8/8] arm64: dts: renesas: salvator: add a connection from adv748x codec (HDMI input) to the R-Car SoC

[Alex Riesen <alexander.riesen@cetitec.com>]

Not sure if all variants of the Salvator board have the HDMI decoder
chip (the ADV7482) connected to the SSI4 on R-Car SoC, as it is on
Salvator-X ES1, so the the ADV7482 endpoint and connection definitions
are placed in the board file.

I do assume though that all Salvator variants have the CLK_C clock line
hard-wired to the ADV7482 HDMI decoder, and remove it from the list of
clocks provided by the R-Car sound system.

The I2C wiring is also likely to persist across the variants (similar
to ak4613, connected to the same interface), so that is in the common
file.

Signed-off-by: Alexander Riesen <alexander.riesen@cetitec.com>
---
 .../dts/renesas/r8a7795-es1-salvator-x.dts    | 24 ++++++++++++-
 .../boot/dts/renesas/salvator-common.dtsi     | 35 ++++++++++++++++---
 2 files changed, 53 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/boot/dts/renesas/r8a7795-es1-salvator-x.dts b/arch/arm64/boot/dts/renesas/r8a7795-es1-salvator-x.dts
index c72968623e94..10f74f7a0efe 100644
--- a/arch/arm64/boot/dts/renesas/r8a7795-es1-salvator-x.dts
+++ b/arch/arm64/boot/dts/renesas/r8a7795-es1-salvator-x.dts
@@ -136,9 +136,29 @@
 				playback = <&ssi3>;
 			};
 		};
+		rsnd_port3: port@3 {
+			reg = <3>;
+			rsnd_endpoint3: endpoint {
+				remote-endpoint = <&adv7482_i2s>;
+
+				dai-tdm-slot-num = <8>;
+				dai-tdm-slot-width = <32>;
+				dai-format = "left_j";
+				mclk-fs = <256>;
+				bitclock-master = <&adv7482_i2s>;
+				frame-master = <&adv7482_i2s>;
+				system-clock-direction-out;
+
+				capture = <&ssi4>;
+			};
+		};
 	};
 };
 
+&adv7482_i2s {
+	remote-endpoint = <&rsnd_endpoint3>;
+};
+
 &sata {
 	status = "okay";
 };
@@ -146,9 +166,11 @@
 &sound_card {
 	dais = <&rsnd_port0	/* ak4613 */
 		&rsnd_port1	/* HDMI0  */
-		&rsnd_port2>;	/* HDMI1  */
+		&rsnd_port2	/* HDMI1  */
+		&rsnd_port3>;	/* adv7482 hdmi-in  */
 };
 
+
 &usb2_phy2 {
 	pinctrl-0 = <&usb2_pins>;
 	pinctrl-names = "default";
diff --git a/arch/arm64/boot/dts/renesas/salvator-common.dtsi b/arch/arm64/boot/dts/renesas/salvator-common.dtsi
index 21e01056e759..e887805b16fc 100644
--- a/arch/arm64/boot/dts/renesas/salvator-common.dtsi
+++ b/arch/arm64/boot/dts/renesas/salvator-common.dtsi
@@ -322,6 +322,10 @@
 	clock-frequency = <22579200>;
 };
 
+&audio_clk_c {
+	clock-frequency = <12288000>;
+};
+
 &avb {
 	pinctrl-0 = <&avb_pins>;
 	pinctrl-names = "default";
@@ -471,12 +475,14 @@
 
 		#address-cells = <1>;
 		#size-cells = <0>;
+		#sound-dai-cells = <0>;
 
 		interrupt-parent = <&gpio6>;
 		interrupt-names = "intrq1", "intrq2";
 		interrupts = <30 IRQ_TYPE_LEVEL_LOW>,
 			     <31 IRQ_TYPE_LEVEL_LOW>;
-
+		clocks = <&rcar_sound 3>, <&audio_clk_c>;
+		clock-names = "clk-hdmi-video", "clk-hdmi-i2s-mclk";
 		port@7 {
 			reg = <7>;
 
@@ -512,6 +518,14 @@
 				remote-endpoint = <&csi20_in>;
 			};
 		};
+
+		port@c {
+			reg = <12>;
+
+			adv7482_i2s: endpoint {
+				/* remote-endpoint defined in the board file */
+			};
+		};
 	};
 
 	csa_vdd: adc@7c {
@@ -686,7 +700,8 @@
 	};
 
 	sound_pins: sound {
-		groups = "ssi01239_ctrl", "ssi0_data", "ssi1_data_a";
+		groups = "ssi01239_ctrl", "ssi0_data", "ssi1_data_a",
+			 "ssi4_data";
 		function = "ssi";
 	};
 
@@ -735,8 +750,8 @@
 	pinctrl-0 = <&sound_pins &sound_clk_pins>;
 	pinctrl-names = "default";
 
-	/* Single DAI */
-	#sound-dai-cells = <0>;
+	/* multi DAI */
+	#sound-dai-cells = <1>;
 
 	/* audio_clkout0/1/2/3 */
 	#clock-cells = <1>;
@@ -760,8 +775,18 @@
 		 <&cpg CPG_MOD 1020>, <&cpg CPG_MOD 1021>,
 		 <&cpg CPG_MOD 1019>, <&cpg CPG_MOD 1018>,
 		 <&audio_clk_a>, <&cs2000>,
-		 <&audio_clk_c>,
 		 <&cpg CPG_CORE CPG_AUDIO_CLK_I>;
+	clock-names = "ssi-all",
+		      "ssi.9", "ssi.8", "ssi.7", "ssi.6",
+		      "ssi.5", "ssi.4", "ssi.3", "ssi.2",
+		      "ssi.1", "ssi.0",
+		      "src.9", "src.8", "src.7", "src.6",
+		      "src.5", "src.4", "src.3", "src.2",
+		      "src.1", "src.0",
+		      "mix.1", "mix.0",
+		      "ctu.1", "ctu.0",
+		      "dvc.0", "dvc.1",
+		      "clk_a", "clk_b", "clk_i";
 
 	ports {
 		#address-cells = <1>;
-- 
2.24.1.508.g91d2dafee0