[PATCH] arm64: dts: imx8mn-var-som: add fixed 3.3V regulator for EEPROM

* [PATCH] arm64: dts: imx8mn-var-som: add fixed 3.3V regulator for EEPROM
@ 2023-10-30 15:19 Hugo Villeneuve
  2023-11-27  3:23 ` Shawn Guo
  0 siblings, 1 reply; 2+ messages in thread
From: Hugo Villeneuve @ 2023-10-30 15:19 UTC (permalink / raw)
  To: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Shawn Guo,
	Sascha Hauer, Pengutronix Kernel Team, Fabio Estevam,
	NXP Linux Team
  Cc: hugo, Hugo Villeneuve, devicetree, linux-arm-kernel, linux-kernel

From: Hugo Villeneuve <hvilleneuve@dimonoff.com>

When the EEPROM is probed, we have this warning:

    at24 0-0052: supply vcc not found, using dummy regulator

Add fixed 3.3v regulator to silence the warning.

Signed-off-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
---
 arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi
index b8946edf317b..b364307868f2 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi
@@ -31,6 +31,14 @@ reg_eth_phy: regulator-eth-phy {
 		gpio = <&gpio2 9 GPIO_ACTIVE_HIGH>;
 		enable-active-high;
 	};
+
+	reg_3v3_fixed: regulator-3v3-fixed {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed_3v3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
 };
 
 &A53_0 {
@@ -234,6 +242,7 @@ eeprom_som: eeprom@52 {
 		compatible = "atmel,24c04";
 		reg = <0x52>;
 		pagesize = <16>;
+		vcc-supply = <&reg_3v3_fixed>;
 	};
 };
 

base-commit: ffc253263a1375a65fa6c9f62a893e9767fbebfa
-- 
2.39.2


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