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: Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: linux-stm32@st-md-mailman.stormreply.com
To: linux-arm-kernel@lists.infradead.org
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>

diff --git a/arch/arm/boot/dts/stm32mp15xx-dhcor-io1v8.dtsi b/arch/arm/boot/dts/stm32mp15xx-dhcor-io1v8.dtsi
index 75172314d7afd3fb515bc1e846cccac8cc3550aa..9937b28548c23ea09f053788c3414b948de19705 100644 (file)
--- a/arch/arm/boot/dts/stm32mp15xx-dhcor-io1v8.dtsi
+++ b/arch/arm/boot/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/boot/dts/stm32mp15xx-dhcor-som.dtsi b/arch/arm/boot/dts/stm32mp15xx-dhcor-som.dtsi
index 6336c3ca0f0e283e0869096b838f87dbaf4e9514..134a798ad3f23f628e8673fadaf58b777cf64e41 100644 (file)
--- a/arch/arm/boot/dts/stm32mp15xx-dhcor-som.dtsi
+++ b/arch/arm/boot/dts/stm32mp15xx-dhcor-som.dtsi
@@ -119,8 +119,8 @@
 
                        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;