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 77055aa2f2f2b1b25aaab2fe1eed2ea85ae69edb..a92c80914768b1b718393a6696f2b62b6a3edac9 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>;
                };