On Fri, May 25, 2018 at 03:34:22PM +0300, Codrin Ciubotariu wrote:
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
.../devicetree/bindings/clock/at91-clock.txt | 34 ++++++++++++++++++++++ 1 file changed, 34 insertions(+)
diff --git a/Documentation/devicetree/bindings/clock/at91-clock.txt b/Documentation/devicetree/bindings/clock/at91-clock.txt index 51c259a..1c46b3c 100644 --- a/Documentation/devicetree/bindings/clock/at91-clock.txt +++ b/Documentation/devicetree/bindings/clock/at91-clock.txt @@ -90,6 +90,8 @@ Required properties: "atmel,sama5d2-clk-audio-pll-pmc" 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":
at91 I2S clock source selection
Is this boolean or takes some values. If latter, what are valid values?
Required properties for SCKC node:
- reg : defines the IO memory reserved for the SCKC.
@@ -507,3 +509,35 @@ 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 theperipheral clock and the second one shall belong to the generatedclock; "clock-indices" property can be user to specifythe 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 {
What is this a child of?
compatible = "atmel,sama5d2-clk-i2s-mux";#address-cells = <1>;#size-cells = <0>;
How do you address this block? My guess is you don't because it is just part of some other block and you are just creating this node to instantiate a driver. Just make the node for the actual h/w block a clock provider and define the clock ids (0 and 1).
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>;};- };
-- 2.7.4