linux-kernel - [PATCH 2/2] ARM: dts: stm32: correct vcc-supply for eeprom on stm32mp15xx-osd32

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Date:   Fri,  3 Jun 2022 11:44:21 +0200
From:   Leonard Göhrs <l.goehrs@...gutronix.de>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>
Cc:     kernel@...gutronix.de,
        Leonard Göhrs <l.goehrs@...gutronix.de>,
        devicetree@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] ARM: dts: stm32: correct vcc-supply for eeprom on stm32mp15xx-osd32

According to the OSD32MP1 Power System overview[1] the EEPROM is connected to
the VDD line and not to some single-purpose fixed regulator.
Set the EEPROM supply according to the diagram to eliminate this parent-less
regulator.

[1]: https://octavosystems.com/app_notes/osd32mp1-power-system-overview/#connections

Signed-off-by: Leonard Göhrs <l.goehrs@...gutronix.de>
---
 arch/arm/boot/dts/stm32mp15xx-osd32.dtsi | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/arch/arm/boot/dts/stm32mp15xx-osd32.dtsi b/arch/arm/boot/dts/stm32mp15xx-osd32.dtsi
index e997c4953fd1..935b7084b5a2 100644
--- a/arch/arm/boot/dts/stm32mp15xx-osd32.dtsi
+++ b/arch/arm/boot/dts/stm32mp15xx-osd32.dtsi
@@ -50,12 +50,6 @@ retram: retram@...00000 {
 			no-map;
 		};
 	};
-
-	reg_sip_eeprom: regulator_eeprom {
-		compatible = "regulator-fixed";
-		regulator-name = "sip_eeprom";
-		regulator-always-on;
-	};
 };
 
 &i2c4 {
@@ -204,7 +198,7 @@ pmic_watchdog: watchdog {
 
 	sip_eeprom: eeprom@50 {
 		compatible = "atmel,24c32";
-		vcc-supply = <&reg_sip_eeprom>;
+		vcc-supply = <&vdd>;
 		reg = <0x50>;
 	};
 };
-- 
2.30.2