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 <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>

diff --git a/arch/arm/dts/stm32mp15xx-dhcor-io1v8.dtsi b/arch/arm/dts/stm32mp15xx-dhcor-io1v8.dtsi
index 75172314d7afd3fb515bc1e846cccac8cc3550aa..9937b28548c23ea09f053788c3414b948de19705 100644 (file)
--- 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 44ecc4708587191d41149d5e7dbd6d2b94e0e4e9..98033b514792d4c974c125a6a7173a8ab6bd4653 100644 (file)
--- 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;