Commit 8cc9c759 authored by Primoz Fiser's avatar Primoz Fiser Committed by Shawn Guo
Browse files

arm64: dts: freescale: imx93-phyboard-nash: Move ADC vref to SoM 



Move configuration for ADC voltage reference from board DTS to a SoM
include file. The SoC ADC reference voltage is connected to a "VDDA_1V8"
voltage node and supplied by the PMIC's BUCK5 regulator. The reference
voltage is thus defined by the SoM and cannot be changed by the carrier
board design and as such belongs into the SoM include file.

Moreover, with this in place, customers designing own carrier boards can
simply include imx93-phycore-som.dtsi and enable adc1 in their own DTS
without the need to define dummy ADC vref regulator themselves anymore.

Signed-off-by: default avatarPrimoz Fiser <primoz.fiser@norik.com>
Reviewed-by: default avatarPeng Fan <peng.fan@nxp.com>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent de8b24ab

arch/arm64/boot/dts/freescale/imx93-phyboard-nash.dts

+0 −8
Original line number Diff line number Diff line
@@ -53,18 +53,10 @@ reg_vcc_1v8: regulator-vcc-1v8 { 
		regulator-max-microvolt = <1800000>;

		regulator-min-microvolt = <1800000>;

	};



	reg_vref_1v8: regulator-adc-vref {

		compatible = "regulator-fixed";

		regulator-name = "VREF_1V8";

		regulator-min-microvolt = <1800000>;

		regulator-max-microvolt = <1800000>;

	};

};



/* ADC */

&adc1 {

	vref-supply = <&reg_vref_1v8>;

	status = "okay";

};

arch/arm64/boot/dts/freescale/imx93-phycore-som.dtsi

+13 −0
Original line number Diff line number Diff line
@@ -46,6 +46,19 @@ led-0 { 
			linux,default-trigger = "heartbeat";

		};

	};



	reg_vdda_1v8: regulator-vdda-1v8 {

		compatible = "regulator-fixed";

		regulator-name = "VDDA_1V8";

		regulator-min-microvolt = <1800000>;

		regulator-max-microvolt = <1800000>;

		vin-supply = <&buck5>;

	};

};



/* ADC */

&adc1 {

	vref-supply = <&reg_vdda_1v8>;

};



/* Ethernet */