From: Gabriel Fernandez <gabriel.fernan...@st.com>

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.fernan...@st.com>
---
 arch/arm/boot/dts/stm32f429.dtsi | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/stm32f429.dtsi b/arch/arm/boot/dts/stm32f429.dtsi
index e4dae0e..7c7dfbd 100644
--- 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 {
@@ -362,7 +368,7 @@
                        #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>;
                };
 
-- 
1.9.1

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