From 6d4619f68cf1c9559fec32d72550cf76a745da6c Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Wed, 4 May 2022 14:50:04 +0200 Subject: [PATCH] ARM: dts: stm32: Move DHCOR BUCK3 VDD 2V9 adjustment to 1V8 DTSI The Buck3 on DHCOR is used to supply IO voltage. It can output either 3V3 in the default DHCOR configuration, or 2V9 in case of AV96 DHCOR variant which has extra Empirion DCDC converter in front of the 1V8 IO supply, or outright 1V8 in case of 1V8 IO DHCOR without the Empirion DCDC converter. The 2V9 mode in case of AV96 DHCOR variant is used to reduce unnecessarily high input voltage to the Empirion DCDC converter, so move it into matching DTSI to stop confusing users. Signed-off-by: Marek Vasut Cc: Patrice Chotard Cc: Patrick Delaunay Reviewed-by: Patrice Chotard Reviewed-by: Patrick Delaunay Signed-off-by: Patrice Chotard --- arch/arm/dts/stm32mp15xx-dhcor-io1v8.dtsi | 5 +++++ arch/arm/dts/stm32mp15xx-dhcor-som.dtsi | 4 ++-- 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/arm/dts/stm32mp15xx-dhcor-io1v8.dtsi b/arch/arm/dts/stm32mp15xx-dhcor-io1v8.dtsi index 75172314d7..9937b28548 100644 --- a/arch/arm/dts/stm32mp15xx-dhcor-io1v8.dtsi +++ b/arch/arm/dts/stm32mp15xx-dhcor-io1v8.dtsi @@ -18,6 +18,11 @@ }; }; +&vdd { + regulator-min-microvolt = <2900000>; + regulator-max-microvolt = <2900000>; +}; + &pwr_regulators { vdd-supply = <&vdd_io>; }; diff --git a/arch/arm/dts/stm32mp15xx-dhcor-som.dtsi b/arch/arm/dts/stm32mp15xx-dhcor-som.dtsi index 44ecc47085..98033b5147 100644 --- a/arch/arm/dts/stm32mp15xx-dhcor-som.dtsi +++ b/arch/arm/dts/stm32mp15xx-dhcor-som.dtsi @@ -77,8 +77,8 @@ vdd: buck3 { regulator-name = "vdd"; - regulator-min-microvolt = <2900000>; - regulator-max-microvolt = <2900000>; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; regulator-always-on; regulator-initial-mode = <0>; regulator-over-current-protection; -- 2.39.5