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    Subject[PATCH v5 1/5] dt-bindings: clk: at91: add an I2S mux clock
    Date
    The I2S mux clock can be used to select the I2S input clock. The
    available parents are the peripheral and the generated clocks.

    Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
    ---

    Changes in v5:
    - specified clock's parent;
    - added a newline before adding the clock's compatible string;

    .../devicetree/bindings/clock/at91-clock.txt | 35 +++++++++++++++++++
    1 file changed, 35 insertions(+)

    diff --git a/Documentation/devicetree/bindings/clock/at91-clock.txt b/Documentation/devicetree/bindings/clock/at91-clock.txt
    index 51c259a92d02..d0adbf5ae144 100644
    --- a/Documentation/devicetree/bindings/clock/at91-clock.txt
    +++ b/Documentation/devicetree/bindings/clock/at91-clock.txt
    @@ -91,6 +91,9 @@ Required properties:
    at91 audio pll output on AUDIOPLLCLK that feeds the PMC
    and can be used by peripheral clock or generic clock

    + "atmel,sama5d2-clk-i2s-mux" (under pmc node):
    + at91 I2S clock source selection
    +
    Required properties for SCKC node:
    - reg : defines the IO memory reserved for the SCKC.
    - #size-cells : shall be 0 (reg is used to encode clk id).
    @@ -507,3 +510,35 @@ For example:
    atmel,clk-output-range = <0 83000000>;
    };
    };
    +
    +Required properties for I2S mux clocks:
    +- #size-cells : shall be 0 (reg is used to encode I2S bus id).
    +- #address-cells : shall be 1 (reg is used to encode I2S bus id).
    +- name: device tree node describing a specific mux clock.
    + * #clock-cells : from common clock binding; shall be set to 0.
    + * clocks : shall be the mux clock parent phandles; shall be 2 phandles:
    + peripheral and generated clock; the first phandle shall belong to the
    + peripheral clock and the second one shall belong to the generated
    + clock; "clock-indices" property can be user to specify
    + the correct order.
    + * reg: I2S bus id of the corresponding mux clock.
    + e.g. reg = <0>; for i2s0, reg = <1>; for i2s1
    +
    +For example:
    + i2s_clkmux {
    + compatible = "atmel,sama5d2-clk-i2s-mux";
    + #address-cells = <1>;
    + #size-cells = <0>;
    +
    + i2s0muxck: i2s0_muxclk {
    + clocks = <&i2s0_clk>, <&i2s0_gclk>;
    + #clock-cells = <0>;
    + reg = <0>;
    + };
    +
    + i2s1muxck: i2s1_muxclk {
    + clocks = <&i2s1_clk>, <&i2s1_gclk>;
    + #clock-cells = <0>;
    + reg = <1>;
    + };
    + };
    --
    2.17.1
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