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ARM: dts: stm32: Move DHCOR BUCK3 VDD 2V9 adjustment to 1V8 DTSI

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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 <marex@denx.de>
Cc: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
This commit is contained in:
Marek Vasut 2022-05-04 14:50:04 +02:00 committed by Patrice Chotard
parent 473c7d72e4
commit 6d4619f68c
2 changed files with 7 additions and 2 deletions
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5
arch/arm/dts/stm32mp15xx-dhcor-io1v8.dtsi
View File

@ -18,6 +18,11 @@
};
};
&vdd {
regulator-min-microvolt = <2900000>;
regulator-max-microvolt = <2900000>;
};
&pwr_regulators {
vdd-supply = <&vdd_io>;
};

4
arch/arm/dts/stm32mp15xx-dhcor-som.dtsi
View File

@ -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;