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-rw-r--r--Documentation/devicetree/bindings/mfd/samsung,exynos5433-lpass.txt70
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diff --git a/Documentation/devicetree/bindings/mfd/samsung,exynos5433-lpass.txt b/Documentation/devicetree/bindings/mfd/samsung,exynos5433-lpass.txt
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+Samsung Exynos SoC Low Power Audio Subsystem (LPASS)
+
+Required properties:
+
+ - compatible : "samsung,exynos5433-lpass"
+ - reg : should contain the LPASS top SFR region location
+ and size
+ - samsung,pmu-syscon : the phandle to the Power Management Unit node
+ - #address-cells : should be 1
+ - #size-cells : should be 1
+ - ranges : must be present
+
+Each IP block of the Low Power Audio Subsystem should be specified as
+an optional sub-node. For "samsung,exynos5433-lpass" compatible this includes:
+UART, SLIMBUS, PCM, I2S, DMAC, Timers 0...4, VIC, WDT 0...1 devices.
+
+Bindings of the sub-nodes are described in:
+ ../serial/samsung_uart.txt
+ ../sound/samsung-i2s.txt
+ ../dma/arm-pl330.txt
+
+
+Example:
+
+audio-subsystem {
+ compatible = "samsung,exynos5433-lpass";
+ reg = <0x11400000 0x100>, <0x11500000 0x08>;
+ samsung,pmu-syscon = <&pmu_system_controller>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ adma: adma@11420000 {
+ compatible = "arm,pl330", "arm,primecell";
+ reg = <0x11420000 0x1000>;
+ interrupts = <0 73 0>;
+ clocks = <&cmu_aud CLK_ACLK_DMAC>;
+ clock-names = "apb_pclk";
+ #dma-cells = <1>;
+ #dma-channels = <8>;
+ #dma-requests = <32>;
+ };
+
+ i2s0: i2s0@11440000 {
+ compatible = "samsung,exynos7-i2s";
+ reg = <0x11440000 0x100>;
+ dmas = <&adma 0 &adma 2>;
+ dma-names = "tx", "rx";
+ interrupts = <0 70 0>;
+ clocks = <&cmu_aud CLK_PCLK_AUD_I2S>,
+ <&cmu_aud CLK_SCLK_AUD_I2S>,
+ <&cmu_aud CLK_SCLK_I2S_BCLK>;
+ clock-names = "iis", "i2s_opclk0", "i2s_opclk1";
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2s0_bus>;
+ status = "disabled";
+ };
+
+ serial_3: serial@11460000 {
+ compatible = "samsung,exynos5433-uart";
+ reg = <0x11460000 0x100>;
+ interrupts = <0 67 0>;
+ clocks = <&cmu_aud CLK_PCLK_AUD_UART>,
+ <&cmu_aud CLK_SCLK_AUD_UART>;
+ clock-names = "uart", "clk_uart_baud0";
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart_aud_bus>;
+ status = "disabled";
+ };
+ };