ARM: dts: r8a7794: add sound support

Define the generic R8A7794 part of  the sound device node.
This sound device  is a complex one and comprises the Audio Clock Generator
(ADG), Sampling Rate Converter Unit (SCU), Serial Sound Interface [Unit]
(SSI[U]), and Audio DMAC-Peripheral-Peripheral.
It is up  to the board file to enable the device.

This patch is based on the R8A7791 sound work by Kuninori Morimoto.
Signed-off-by: NSergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7794.dtsi

@@ -1416,4 +1416,185 @@
 		#iommu-cells = <1>;
 		status = "disabled";
 	};
+
+	rcar_sound: sound@ec500000 {
+		/*
+		 * #sound-dai-cells is required
+		 *
+		 * Single DAI : #sound-dai-cells = <0>;         <&rcar_sound>;
+		 * Multi  DAI : #sound-dai-cells = <1>;         <&rcar_sound N>;
+		 */
+		compatible = "renesas,rcar_sound-r8a7794",
+			     "renesas,rcar_sound-gen2";
+		reg =	<0 0xec500000 0 0x1000>, /* SCU */
+			<0 0xec5a0000 0 0x100>,  /* ADG */
+			<0 0xec540000 0 0x1000>, /* SSIU */
+			<0 0xec541000 0 0x280>,  /* SSI */
+			<0 0xec740000 0 0x200>;  /* Audio DMAC peri peri */
+		reg-names = "scu", "adg", "ssiu", "ssi", "audmapp";
+
+		clocks = <&mstp10_clks R8A7794_CLK_SSI_ALL>,
+			 <&mstp10_clks R8A7794_CLK_SSI9>,
+			 <&mstp10_clks R8A7794_CLK_SSI8>,
+			 <&mstp10_clks R8A7794_CLK_SSI7>,
+			 <&mstp10_clks R8A7794_CLK_SSI6>,
+			 <&mstp10_clks R8A7794_CLK_SSI5>,
+			 <&mstp10_clks R8A7794_CLK_SSI4>,
+			 <&mstp10_clks R8A7794_CLK_SSI3>,
+			 <&mstp10_clks R8A7794_CLK_SSI2>,
+			 <&mstp10_clks R8A7794_CLK_SSI1>,
+			 <&mstp10_clks R8A7794_CLK_SSI0>,
+			 <&mstp10_clks R8A7794_CLK_SCU_SRC6>,
+			 <&mstp10_clks R8A7794_CLK_SCU_SRC5>,
+			 <&mstp10_clks R8A7794_CLK_SCU_SRC4>,
+			 <&mstp10_clks R8A7794_CLK_SCU_SRC3>,
+			 <&mstp10_clks R8A7794_CLK_SCU_SRC2>,
+			 <&mstp10_clks R8A7794_CLK_SCU_SRC1>,
+			 <&mstp10_clks R8A7794_CLK_SCU_CTU0_MIX0>,
+			 <&mstp10_clks R8A7794_CLK_SCU_CTU1_MIX1>,
+			 <&mstp10_clks R8A7794_CLK_SCU_CTU0_MIX0>,
+			 <&mstp10_clks R8A7794_CLK_SCU_CTU1_MIX1>,
+			 <&mstp10_clks R8A7794_CLK_SCU_DVC0>,
+			 <&mstp10_clks R8A7794_CLK_SCU_DVC1>,
+			 <&audio_clka>, <&audio_clkb>, <&audio_clkc>,
+			 <&m2_clk>;
+		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.6", "src.5", "src.4", "src.3", "src.2",
+			      "src.1",
+			      "ctu.0", "ctu.1",
+			      "mix.0", "mix.1",
+			      "dvc.0", "dvc.1",
+			      "clk_a", "clk_b", "clk_c", "clk_i";
+		power-domains = <&cpg_clocks>;
+
+		status = "disabled";
+
+		rcar_sound,dvc {
+			dvc0: dvc@0 {
+				dmas = <&audma0 0xbc>;
+				dma-names = "tx";
+			};
+			dvc1: dvc@1 {
+				dmas = <&audma0 0xbe>;
+				dma-names = "tx";
+			};
+		};
+
+		rcar_sound,mix {
+			mix0: mix@0 { };
+			mix1: mix@1 { };
+		};
+
+		rcar_sound,ctu {
+			ctu00: ctu@0 { };
+			ctu01: ctu@1 { };
+			ctu02: ctu@2 { };
+			ctu03: ctu@3 { };
+			ctu10: ctu@4 { };
+			ctu11: ctu@5 { };
+			ctu12: ctu@6 { };
+			ctu13: ctu@7 { };
+		};
+
+		rcar_sound,src {
+			src@0 {
+				status = "disabled";
+			};
+			src1: src@1 {
+				interrupts = <GIC_SPI 353 IRQ_TYPE_LEVEL_HIGH>;
+				dmas = <&audma0 0x87>, <&audma0 0x9c>;
+				dma-names = "rx", "tx";
+			};
+			src2: src@2 {
+				interrupts = <GIC_SPI 354 IRQ_TYPE_LEVEL_HIGH>;
+				dmas = <&audma0 0x89>, <&audma0 0x9e>;
+				dma-names = "rx", "tx";
+			};
+			src3: src@3 {
+				interrupts = <GIC_SPI 355 IRQ_TYPE_LEVEL_HIGH>;
+				dmas = <&audma0 0x8b>, <&audma0 0xa0>;
+				dma-names = "rx", "tx";
+			};
+			src4: src@4 {
+				interrupts = <GIC_SPI 356 IRQ_TYPE_LEVEL_HIGH>;
+				dmas = <&audma0 0x8d>, <&audma0 0xb0>;
+				dma-names = "rx", "tx";
+			};
+			src5: src@5 {
+				interrupts = <GIC_SPI 357 IRQ_TYPE_LEVEL_HIGH>;
+				dmas = <&audma0 0x8f>, <&audma0 0xb2>;
+				dma-names = "rx", "tx";
+			};
+			src6: src@6 {
+				interrupts = <GIC_SPI 358 IRQ_TYPE_LEVEL_HIGH>;
+				dmas = <&audma0 0x91>, <&audma0 0xb4>;
+				dma-names = "rx", "tx";
+			};
+		};
+
+		rcar_sound,ssi {
+			ssi0: ssi@0 {
+				interrupts = <GIC_SPI 370 IRQ_TYPE_LEVEL_HIGH>;
+				dmas = <&audma0 0x01>, <&audma0 0x02>,
+				       <&audma0 0x15>, <&audma0 0x16>;
+				dma-names = "rx", "tx", "rxu", "txu";
+			};
+			ssi1: ssi@1 {
+				interrupts = <GIC_SPI 371 IRQ_TYPE_LEVEL_HIGH>;
+				dmas = <&audma0 0x03>, <&audma0 0x04>,
+				       <&audma0 0x49>, <&audma0 0x4a>;
+				dma-names = "rx", "tx", "rxu", "txu";
+			};
+			ssi2: ssi@2 {
+				interrupts = <GIC_SPI 372 IRQ_TYPE_LEVEL_HIGH>;
+				dmas = <&audma0 0x05>, <&audma0 0x06>,
+				       <&audma0 0x63>, <&audma0 0x64>;
+				dma-names = "rx", "tx", "rxu", "txu";
+			};
+			ssi3: ssi@3 {
+				interrupts = <GIC_SPI 373 IRQ_TYPE_LEVEL_HIGH>;
+				dmas = <&audma0 0x07>, <&audma0 0x08>,
+				       <&audma0 0x6f>, <&audma0 0x70>;
+				dma-names = "rx", "tx", "rxu", "txu";
+			};
+			ssi4: ssi@4 {
+				interrupts = <GIC_SPI 374 IRQ_TYPE_LEVEL_HIGH>;
+				dmas = <&audma0 0x09>, <&audma0 0x0a>,
+				       <&audma0 0x71>, <&audma0 0x72>;
+				dma-names = "rx", "tx", "rxu", "txu";
+			};
+			ssi5: ssi@5 {
+				interrupts = <GIC_SPI 375 IRQ_TYPE_LEVEL_HIGH>;
+				dmas = <&audma0 0x0b>, <&audma0 0x0c>,
+				       <&audma0 0x73>, <&audma0 0x74>;
+				dma-names = "rx", "tx", "rxu", "txu";
+			};
+			ssi6: ssi@6 {
+				interrupts = <GIC_SPI 376 IRQ_TYPE_LEVEL_HIGH>;
+				dmas = <&audma0 0x0d>, <&audma0 0x0e>,
+				       <&audma0 0x75>, <&audma0 0x76>;
+				dma-names = "rx", "tx", "rxu", "txu";
+			};
+			ssi7: ssi@7 {
+				interrupts = <GIC_SPI 377 IRQ_TYPE_LEVEL_HIGH>;
+				dmas = <&audma0 0x0f>, <&audma0 0x10>,
+				       <&audma0 0x79>, <&audma0 0x7a>;
+				dma-names = "rx", "tx", "rxu", "txu";
+			};
+			ssi8: ssi@8 {
+				interrupts = <GIC_SPI 378 IRQ_TYPE_LEVEL_HIGH>;
+				dmas = <&audma0 0x11>, <&audma0 0x12>,
+				       <&audma0 0x7b>, <&audma0 0x7c>;
+				dma-names = "rx", "tx", "rxu", "txu";
+			};
+			ssi9: ssi@9 {
+				interrupts = <GIC_SPI 379 IRQ_TYPE_LEVEL_HIGH>;
+				dmas = <&audma0 0x13>, <&audma0 0x14>,
+				       <&audma0 0x7d>, <&audma0 0x7e>;
+				dma-names = "rx", "tx", "rxu", "txu";
+			};
+		};
+	};
 };