[PATCH] ARM: dts: sun8i: r40: bananapi-m2-ultra: Fix dcdc1 regulator

[Jernej Skrabec]

DCDC1 regulator powers many different subsystems. While some of them can
work at 3.0 V, some of them can not. For example, VCC-HDMI can only work
between 3.24 V and 3.36 V. According to OS images provided by the board
manufacturer this regulator should be set to 3.3 V.

Set DCDC1 and DCDC1SW to 3.3 V in order to fix this.

Fixes: da7ac948fa93 ("ARM: dts: sun8i: Add board dts file for Banana Pi M2
Ultra")
Signed-off-by: Jernej Skrabec <jernej....@siol.net>
---
arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts b/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts
index 42d62d1ba1dc..ea15073f0c79 100644
--- a/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts
+++ b/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts
@@ -223,16 +223,16 @@ &reg_aldo3 {
};

&reg_dc1sw {
- regulator-min-microvolt = <3000000>;
- regulator-max-microvolt = <3000000>;
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
regulator-name = "vcc-gmac-phy";
};

&reg_dcdc1 {
regulator-always-on;
- regulator-min-microvolt = <3000000>;
- regulator-max-microvolt = <3000000>;
- regulator-name = "vcc-3v0";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-name = "vcc-3v3";
};

&reg_dcdc2 {
--
2.28.0

[Pablo Sebastián Greco]

Should this be done also for the bananapi-m2-berry?, it is basically the
same device
sun8i-v40-bananapi-m2-berry.dts


Pablo

[Jernej Škrabec]

Dne ponedeljek, 24. avgust 2020 ob 22:54:01 CEST je Pablo Sebastián Greco
napisal(a):

I think so but I would rather not do that without testing and I don't have
that board.

Best regards,
Jernej