On Wed, 10 Aug 2016, Sylwester Nawrocki wrote:
> This patch adds documentation of the DT bindings for the Samsung
> Exynos SoC Low Power Audio Subsystem.
>
> Signed-off-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
> Acked-by: Rob Herring <robh@xxxxxxxxxx>
> ---
>
> Changes since v5:
> - none.
>
> Changes since v4:
> - text reformatting, added VIC to the list of sub-devices, relative
> paths used for the reference DT binding documentation files, added
> example dts.
>
> Changes since v3:
> - moved to Documentation/devicetree/bindings/mfd,
> - added #address-cells, #size-cells, ranges as required
> properties,
> - added description of the IP block subnodes and links
> to their binding's documentation.
>
> Changes since v2:
> - none.
> ---
> .../bindings/mfd/samsung,exynos5433-lpass.txt | 70 ++++++++++++++++++++++
> 1 file changed, 70 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/mfd/samsung,exynos5433-lpass.txt
Applied, thanks.
> diff --git a/Documentation/devicetree/bindings/mfd/samsung,exynos5433-lpass.txt b/Documentation/devicetree/bindings/mfd/samsung,exynos5433-lpass.txt
> new file mode 100644
> index 0000000..c110e11
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/samsung,exynos5433-lpass.txt
> @@ -0,0 +1,70 @@
> +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";
> + };
> + };
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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