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"; }; };