ARM: dts: at91: Describe regulators on at91sam9g20ek

The at91sam9g20ek has no software controllable regulators, only some fixed
discrete regulators, but they are there and currently the wm8731 driver
does try to use them. Show the supplies in the DT and map them for the
wm8731 so things start up cleanly.

Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20220404102806.581374-3-broonie@kernel.org

diff --git a/arch/arm/boot/dts/at91sam9g20ek_common.dtsi b/arch/arm/boot/dts/at91sam9g20ek_common.dtsi
index 91df8ec27a3d4ca2ee0fa92318a159e1223a6674..85c17dd1c8d5caa3f271e17a20b94b7e80a14098 100644 (file)
--- a/arch/arm/boot/dts/at91sam9g20ek_common.dtsi
+++ b/arch/arm/boot/dts/at91sam9g20ek_common.dtsi
@@ -214,6 +214,7 @@
                24c512@50 {
                        compatible = "atmel,24c512";
                        reg = <0x50>;
+                       vcc-supply = <&reg_3v3>;
                };
 
                wm8731: wm8731@1b {
@@ -225,6 +226,11 @@
                        clock-names = "mclk";
                        assigned-clocks = <&pmc PMC_TYPE_SYSTEM 8>;
                        assigned-clock-rates = <12000000>;
+
+                       HPVDD-supply = <&vcc_dac>;
+                       AVDD-supply = <&vcc_dac>;
+                       DCVDD-supply = <&reg_3v3>;
+                       DBVDD-supply = <&reg_3v3>;
                };
        };
 
@@ -260,4 +266,35 @@
                atmel,ssc-controller = <&ssc0>;
                atmel,audio-codec = <&wm8731>;
        };
+
+       reg_5v: fixedregulator0 {
+               compatible = "regulator-fixed";
+               regulator-name = "5V";
+               regulator-min-microvolt = <5000000>;
+               regulator-max-microvolt = <5000000>;
+       };
+
+       reg_3v3: fixedregulator1 {
+               compatible = "regulator-fixed";
+               regulator-name = "3V3";
+               vin-supply = <&reg_5v>;
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+       };
+
+       reg_1v: fixedregulator2 {
+               compatible = "regulator-fixed";
+               regulator-name = "1V";
+               vin-supply = <&reg_5v>;
+               regulator-min-microvolt = <1000000>;
+               regulator-max-microvolt = <1000000>;
+       };
+
+       vcc_dac: fixedregulator3 {
+               compatible = "regulator-fixed";
+               regulator-name = "VCC_DAC";
+               vin-supply = <&reg_3v3>;
+               regulator-min-microvolt = <3300000>;
+               regulator-max-microvolt = <3300000>;
+       };
 };