2023-10-30 15:19:47

by Hugo Villeneuve

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

From: Hugo Villeneuve <[email protected]>

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 <[email protected]>
---
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

2023-11-27 03:24:06

by Shawn Guo

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

On Mon, Oct 30, 2023 at 11:19:20AM -0400, Hugo Villeneuve wrote:
> From: Hugo Villeneuve <[email protected]>
>
> 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 <[email protected]>

Applied, thanks!