[PW_SID:991421] ASoC: spacemit: add i2s support to K1 SoC

Documentation/devicetree/bindings/sound/spacemit,k1-i2s.yaml

@@ -0,0 +1,88 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/spacemit,k1-i2s.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: K1 I2S controller
+
+description:
+  The I2S bus (Inter-IC sound bus) is a serial link for digital
+  audio data transfer between devices in the system.
+
+maintainers:
+  - Troy Mitchell <troy.mitchell@linux.spacemit.com>
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    const: spacemit,k1-i2s
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: clock for I2S sysclk
+      - description: clock for I2S bclk
+      - description: clock for I2S bus
+      - description: clock for I2S controller
+
+  clock-names:
+    items:
+      - const: sysclk
+      - const: bclk
+      - const: bus
+      - const: func
+
+  dmas:
+    minItems: 1
+    maxItems: 2
+
+  dma-names:
+    oneOf:
+      - const: rx
+      - items:
+          - const: tx
+          - const: rx
+
+  resets:
+    maxItems: 1
+
+  port:
+    $ref: audio-graph-port.yaml#
+    unevaluatedProperties: false
+
+  "#sound-dai-cells":
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - dmas
+  - dma-names
+  - resets
+  - "#sound-dai-cells"
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/spacemit,k1-syscon.h>
+    i2s@d4026000 {
+      compatible = "spacemit,k1-i2s";
+      reg = <0xd4026000 0x30>;
+      clocks = <&syscon_mpmu CLK_I2S_SYSCLK>,
+               <&syscon_mpmu CLK_I2S_BCLK>,
+               <&syscon_apbc CLK_SSPA0_BUS>,
+               <&syscon_apbc CLK_SSPA0>;
+      clock-names = "sysclk", "bclk", "bus", "func";
+      dmas = <&pdma0 21 1>, <&pdma0 22 1>;
+      dma-names = "tx", "rx";
+      resets = <&syscon_apbc RESET_SSPA0>;
+      #sound-dai-cells = <0>;
+    };

sound/soc/Kconfig

@@ -128,6 +128,7 @@ source "sound/soc/renesas/Kconfig"
 source "sound/soc/rockchip/Kconfig"
 source "sound/soc/samsung/Kconfig"
 source "sound/soc/sdca/Kconfig"
+source "sound/soc/spacemit/Kconfig"
 source "sound/soc/spear/Kconfig"
 source "sound/soc/sprd/Kconfig"
 source "sound/soc/starfive/Kconfig"

sound/soc/Makefile

@@ -70,6 +70,7 @@ obj-$(CONFIG_SND_SOC)	+= rockchip/
 obj-$(CONFIG_SND_SOC)	+= samsung/
 obj-$(CONFIG_SND_SOC)	+= sdca/
 obj-$(CONFIG_SND_SOC)	+= sof/
+obj-$(CONFIG_SND_SOC)	+= spacemit/
 obj-$(CONFIG_SND_SOC)	+= spear/
 obj-$(CONFIG_SND_SOC)	+= sprd/
 obj-$(CONFIG_SND_SOC)	+= starfive/

sound/soc/spacemit/Kconfig

@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: GPL-2.0-only
+menu "SpacemiT"
+	depends on COMPILE_TEST || ARCH_SPACEMIT
+	depends on HAVE_CLK
+
+config SND_SOC_K1_I2S
+	tristate "K1 I2S Device Driver"
+	select SND_SOC_GENERIC_DMAENGINE_PCM
+	help
+	  Say Y or M if you want to add support for I2S driver for
+	  K1 I2S controller. The device supports up to maximum of
+	  2 channels each for play and record.
+
+endmenu

sound/soc/spacemit/Makefile

@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0
+# K1 Platform Support
+snd-soc-k1-i2s-y := k1_i2s.o
+
+obj-$(CONFIG_SND_SOC_K1_I2S) += snd-soc-k1-i2s.o