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@xxxxxxx>
---
Cc: Alexandre Torgue <alexandre.torgue@xxxxxxxxxxx>
Cc: Conor Dooley <conor+dt@xxxxxxxxxx>
Cc: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
Cc: Marek Vasut <marex@xxxxxxx>
Cc: Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx>
Cc: Rob Herring <robh@xxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: kernel@xxxxxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-stm32@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
---
arch/arm/boot/dts/st/stm32mp13xx-dhcor-som.dtsi | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/st/stm32mp13xx-dhcor-som.dtsi b/arch/arm/boot/dts/st/stm32mp13xx-dhcor-som.dtsi
index 07133bd82efa6..8630de147a52b 100644
--- a/arch/arm/boot/dts/st/stm32mp13xx-dhcor-som.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp13xx-dhcor-som.dtsi
@@ -85,8 +85,8 @@ regulators {
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;
--
2.45.2
