ARM: dts: sun8i: a83t: bananapi-m3: increase vcc-pd voltage to 3.3V

BugLink: https://bugs.launchpad.net/bugs/1837477
[ Upstream commit 5f8208f557065163f9a8089ea2ea7888f9d96922 ]

Since commit d7c5f6863550 ("ARM: dts: sun8i: a83t: bananapi-m3: Add
AXP813 regulator nodes") my BPIM3 no longer works at gigabit speed.

With the default setting, dldo3 is regulated at 2.9v which seems
sufficient for the PHY but the aforementioned commit drops it to 2.5V
which is insufficient. Note that this behaviour is random for all BPIM3.
Some work with 2.5V, but some don't.

Finnaly, someone from Bananapi confirmed that this regulator must be set
to 3.3V.

Fixes: d7c5f6863550 ("ARM: dts: sun8i: a83t: bananapi-m3: Add AXP813
		      regulator nodes")
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
[wens@csie.org: Reworked commit message]
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Andrea Righi <andrea.righi@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

diff --git a/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts b/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts
index c606af3dbfedf9351aed99313917b3f9e85e98c4..bfc39fdd64fed624f5ddb378b3f9be308006e9aa 100644 (file)
--- a/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts
+++ b/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts
@@ -244,8 +244,8 @@
 
 &reg_dldo3 {
        regulator-always-on;
-       regulator-min-microvolt = <2500000>;
-       regulator-max-microvolt = <2500000>;
+       regulator-min-microvolt = <3300000>;
+       regulator-max-microvolt = <3300000>;
        regulator-name = "vcc-pd";
 };