arm64: renesas: r8a7795: Sound SSI PIO support

This patch adds SSI for PIO sound support

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

1 files changed, 95 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/renesas/r8a7795.dtsi b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
index 2cc58114d1ef..15753f4dcf4e 100644
--- a/arch/arm64/boot/dts/renesas/r8a7795.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a7795.dtsi
@@ -52,6 +52,29 @@
                 clock-frequency = <0>;
         };
 
+        /*
+         * The external audio clocks are configured as 0 Hz fixed frequency
+         * clocks by default.
+         * Boards that provide audio clocks should override them.
+         */
+        audio_clk_a: audio_clk_a {
+                compatible = "fixed-clock";
+                #clock-cells = <0>;
+                clock-frequency = <0>;
+        };
+
+        audio_clk_b: audio_clk_b {
+                compatible = "fixed-clock";
+                #clock-cells = <0>;
+                clock-frequency = <0>;
+        };
+
+        audio_clk_c: audio_clk_c {
+                compatible = "fixed-clock";
+                #clock-cells = <0>;
+                clock-frequency = <0>;
+        };
+
         soc {
                 compatible = "simple-bus";
                 interrupt-parent = <&gic>;
@@ -534,5 +557,77 @@
                         power-domains = <&cpg>;
                         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>;
+                         */
+                        /*
+                         * #clock-cells is required for audio_clkout0/1/2/3
+                         *
+                         * clkout       : #clock-cells = <0>;   <&rcar_sound>;
+                         * clkout0/1/2/3: #clock-cells = <1>;   <&rcar_sound N>;
+                         */
+                        compatible =  "renesas,rcar_sound-r8a7795", "renesas,rcar_sound-gen3";
+                        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 = <&cpg CPG_MOD 1005>,
+                                 <&cpg CPG_MOD 1006>, <&cpg CPG_MOD 1007>,
+                                 <&cpg CPG_MOD 1008>, <&cpg CPG_MOD 1009>,
+                                 <&cpg CPG_MOD 1010>, <&cpg CPG_MOD 1011>,
+                                 <&cpg CPG_MOD 1012>, <&cpg CPG_MOD 1013>,
+                                 <&cpg CPG_MOD 1014>, <&cpg CPG_MOD 1015>,
+                                 <&audio_clk_a>, <&audio_clk_b>,
+                                 <&audio_clk_c>,
+                                 <&cpg CPG_CORE R8A7795_CLK_S0D4>;
+                        clock-names = "ssi-all",
+                                      "ssi.9", "ssi.8", "ssi.7", "ssi.6",
+                                      "ssi.5", "ssi.4", "ssi.3", "ssi.2",
+                                      "ssi.1", "ssi.0",
+                                      "clk_a", "clk_b", "clk_c", "clk_i";
+                        power-domains = <&cpg>;
+                        status = "disabled";
+
+                        rcar_sound,ssi {
+                                ssi0: ssi@0 {
+                                        interrupts = <0 370 IRQ_TYPE_LEVEL_HIGH>;
+                                };
+                                ssi1: ssi@1 {
+                                         interrupts = <0 371 IRQ_TYPE_LEVEL_HIGH>;
+                                };
+                                ssi2: ssi@2 {
+                                        interrupts = <0 372 IRQ_TYPE_LEVEL_HIGH>;
+                                };
+                                ssi3: ssi@3 {
+                                        interrupts = <0 373 IRQ_TYPE_LEVEL_HIGH>;
+                                };
+                                ssi4: ssi@4 {
+                                        interrupts = <0 374 IRQ_TYPE_LEVEL_HIGH>;
+                                };
+                                ssi5: ssi@5 {
+                                        interrupts = <0 375 IRQ_TYPE_LEVEL_HIGH>;
+                                };
+                                ssi6: ssi@6 {
+                                        interrupts = <0 376 IRQ_TYPE_LEVEL_HIGH>;
+                                };
+                                ssi7: ssi@7 {
+                                        interrupts = <0 377 IRQ_TYPE_LEVEL_HIGH>;
+                                };
+                                ssi8: ssi@8 {
+                                        interrupts = <0 378 IRQ_TYPE_LEVEL_HIGH>;
+                                };
+                                ssi9: ssi@9 {
+                                        interrupts = <0 379 IRQ_TYPE_LEVEL_HIGH>;
+                                };
+                        };
+                };
         };
 };