ARM: dts: at91: sama5d27_som1_ek: add adc regulators

Add fixed regulators for the ADC. This board does not have
a programmable PMIC, but fixed regulators.
Adding them to DT so the ADC can probe correctly.

Tested-by: Swapna Gurumani <swapna.gurumani@microchip.com>
Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

1 files changed, 42 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/at91-sama5d27_som1_ek.dts b/arch/arm/boot/dts/at91-sama5d27_som1_ek.dts
index e86e0c00eb6b..363a43d77424 100644
--- a/arch/arm/boot/dts/at91-sama5d27_som1_ek.dts
+++ b/arch/arm/boot/dts/at91-sama5d27_som1_ek.dts
@@ -283,6 +283,13 @@
                                 status = "okay";
                         };
 
+                        adc: adc@fc030000 {
+                                vddana-supply = <&vddana>;
+                                vref-supply = <&advref>;
+
+                                status = "disabled";
+                        };
+
                         pinctrl@fc038000 {
 
                                 pinctrl_can1_default: can1_default {
@@ -549,4 +556,39 @@
                         linux,default-trigger = "heartbeat";
                 };
         };
+
+        vddin_3v3: fixed-regulator-vddin_3v3 {
+                compatible = "regulator-fixed";
+
+                regulator-name = "VDDIN_3V3";
+                regulator-min-microvolt = <3300000>;
+                regulator-max-microvolt = <3300000>;
+                regulator-always-on;
+                regulator-boot-on;
+                status = "okay";
+        };
+
+        vddana: fixed-regulator-vddana {
+                compatible = "regulator-fixed";
+
+                regulator-name = "VDDANA";
+                regulator-min-microvolt = <3300000>;
+                regulator-max-microvolt = <3300000>;
+                regulator-always-on;
+                regulator-boot-on;
+                vin-supply = <&vddin_3v3>;
+                status = "okay";
+        };
+
+        advref: fixed-regulator-advref {
+                compatible = "regulator-fixed";
+
+                regulator-name = "advref";
+                regulator-min-microvolt = <3300000>;
+                regulator-max-microvolt = <3300000>;
+                regulator-always-on;
+                regulator-boot-on;
+                vin-supply = <&vddana>;
+                status = "okay";
+        };
 };