Documentation/devicetree/bindings/mfd/samsung,exynos5433-lpass.txt

   1 Samsung Exynos SoC Low Power Audio Subsystem (LPASS)
   2
   3 Required properties:
   4
   5  - compatible           : "samsung,exynos5433-lpass"
   6  - reg                  : should contain the LPASS top SFR region location
   7                           and size
   8  - clock-names          : should contain following required clocks: "sfr0_ctrl"
   9  - clocks               : should contain clock specifiers of all clocks, which
  10                           input names have been specified in clock-names
  11                           property, in same order.
  12  - #address-cells       : should be 1
  13  - #size-cells          : should be 1
  14  - ranges               : must be present
  15
  16 Each IP block of the Low Power Audio Subsystem should be specified as
  17 an optional sub-node. For "samsung,exynos5433-lpass" compatible this includes:
  18 UART, SLIMBUS, PCM, I2S, DMAC, Timers 0...4, VIC, WDT 0...1 devices.
  19
  20 Bindings of the sub-nodes are described in:
  21   ../serial/samsung_uart.yaml
  22   ../sound/samsung-i2s.txt
  23   ../dma/arm-pl330.txt
  24
  25
  26 Example:
  27
  28 audio-subsystem {
  29         compatible = "samsung,exynos5433-lpass";
  30         reg = <0x11400000 0x100>, <0x11500000 0x08>;
  31         clocks = <&cmu_aud CLK_PCLK_SFR0_CTRL>;
  32         clock-names = "sfr0_ctrl";
  33         #address-cells = <1>;
  34         #size-cells = <1>;
  35         ranges;
  36
  37         adma: adma@11420000 {
  38                 compatible = "arm,pl330", "arm,primecell";
  39                 reg = <0x11420000 0x1000>;
  40                 interrupts = <0 73 0>;
  41                 clocks = <&cmu_aud CLK_ACLK_DMAC>;
  42                 clock-names = "apb_pclk";
  43                 #dma-cells = <1>;
  44                 #dma-channels = <8>;
  45                 #dma-requests = <32>;
  46         };
  47
  48         i2s0: i2s0@11440000 {
  49                 compatible = "samsung,exynos7-i2s";
  50                 reg = <0x11440000 0x100>;
  51                 dmas = <&adma 0 &adma 2>;
  52                 dma-names = "tx", "rx";
  53                 interrupts = <0 70 0>;
  54                 clocks = <&cmu_aud CLK_PCLK_AUD_I2S>,
  55                          <&cmu_aud CLK_SCLK_AUD_I2S>,
  56                          <&cmu_aud CLK_SCLK_I2S_BCLK>;
  57                 clock-names = "iis", "i2s_opclk0", "i2s_opclk1";
  58                 pinctrl-names = "default";
  59                 pinctrl-0 = <&i2s0_bus>;
  60         };
  61
  62         serial_3: serial@11460000 {
  63                 compatible = "samsung,exynos5433-uart";
  64                 reg = <0x11460000 0x100>;
  65                 interrupts = <0 67 0>;
  66                 clocks = <&cmu_aud CLK_PCLK_AUD_UART>,
  67                          <&cmu_aud CLK_SCLK_AUD_UART>;
  68                 clock-names = "uart", "clk_uart_baud0";
  69                 pinctrl-names = "default";
  70                 pinctrl-0 = <&uart_aud_bus>;
  71         };
  72  };