ARM: dts: stm32: Add external I2S clock on stm32f429 MCU

This patch adds an external I2S clock in the DT.
The I2S clock could be derived from an external I2S clock or by I2S pll.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>

diff --git a/arch/arm/boot/dts/stm32f429.dtsi b/arch/arm/boot/dts/stm32f429.dtsi
index 77055aa..a92c809 100644 (file)
--- a/arch/arm/boot/dts/stm32f429.dtsi
+++ b/arch/arm/boot/dts/stm32f429.dtsi
@@ -68,6 +68,12 @@
                        compatible = "fixed-clock";
                        clock-frequency = <32000>;
                };
+
+               clk_i2s_ckin: i2s-ckin {
+                       #clock-cells = <0>;
+                       compatible = "fixed-clock";
+                       clock-frequency = <0>;
+               };
        };
 
        soc {
@@ -424,7 +430,7 @@
                        #clock-cells = <2>;
                        compatible = "st,stm32f42xx-rcc", "st,stm32-rcc";
                        reg = <0x40023800 0x400>;
-                       clocks = <&clk_hse>;
+                       clocks = <&clk_hse>, <&clk_i2s_ckin>;
                        st,syscfg = <&pwrcfg>;
                };