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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
- - clock-names : should contain following required clocks: "sfr0_ctrl"
- - clocks : should contain clock specifiers of all clocks, which
- input names have been specified in clock-names
- property, in same order.
- - #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.yaml
- ../sound/samsung-i2s.txt
- ../dma/arm-pl330.txt
-
-
-Example:
-
-audio-subsystem {
- compatible = "samsung,exynos5433-lpass";
- reg = <0x11400000 0x100>, <0x11500000 0x08>;
- clocks = <&cmu_aud CLK_PCLK_SFR0_CTRL>;
- clock-names = "sfr0_ctrl";
- #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>;
- };
-
- 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>;
- };
- };