ARM: dts: stm32: Increase CPU core voltage on STM32MP13xx DHCOR SoM

The STM32MP13xx DHCOR DHSBC is populated with STM32MP13xx part capable
of 1 GHz operation, increase the CPU core voltage to 1.35 V to make
sure the SoC is stable even if the blobs unconditionally force the CPU
to 1 GHz operation.

It is not possible to make use of CPUfreq on the STM32MP13xx because
the SCMI protocol 0x13 is not implemented by upstream OpTee-OS which
is the SCMI provider.

Fixes: 6331bddce649 ("ARM: dts: stm32: Add support for STM32MP13xx DHCOR SoM and DHSBC board")
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>

diff --git a/arch/arm/boot/dts/st/stm32mp13xx-dhcor-som.dtsi b/arch/arm/boot/dts/st/stm32mp13xx-dhcor-som.dtsi
index 5edbc790d1d2739557fd198eb764c1129b4a6fe1..34a7ebfcef0ee9cd45557ef903d2eabf08e0f74b 100644 (file)
--- a/arch/arm/boot/dts/st/stm32mp13xx-dhcor-som.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp13xx-dhcor-som.dtsi
@@ -85,8 +85,8 @@
 
                        vddcpu: buck1 { /* VDD_CPU_1V2 */
                                regulator-name = "vddcpu";
-                               regulator-min-microvolt = <1250000>;
-                               regulator-max-microvolt = <1250000>;
+                               regulator-min-microvolt = <1350000>;
+                               regulator-max-microvolt = <1350000>;
                                regulator-always-on;
                                regulator-initial-mode = <0>;
                                regulator-over-current-protection;