ARM: dts: stm32mp157: Add vrefbuf DT node

Add vrefbuf device tree node. This allows to get
a voltage reference for ADCs.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

diff --git a/arch/arm/dts/stm32mp157.dtsi b/arch/arm/dts/stm32mp157.dtsi
index a798144..2b89416 100644 (file)
--- a/arch/arm/dts/stm32mp157.dtsi
+++ b/arch/arm/dts/stm32mp157.dtsi
@@ -156,6 +156,15 @@
                        };
                };
 
+               vrefbuf: vrefbuf@50025000 {
+                       compatible = "st,stm32-vrefbuf";
+                       reg = <0x50025000 0x8>;
+                       regulator-min-microvolt = <1500000>;
+                       regulator-max-microvolt = <2500000>;
+                       clocks = <&rcc_clk VREF>;
+                       status = "disabled";
+               };
+
                pinctrl: pin-controller {
                        compatible = "st,stm32mp157-pinctrl";
                        #address-cells = <1>;