| From 10edf12e93f00f24f16f3d092be36ff284d8b15d Mon Sep 17 00:00:00 2001 |
| From: Corentin Labbe <clabbe@baylibre.com> |
| Date: Mon, 9 Jul 2018 19:51:54 +0000 |
| Subject: ARM: dts: sun8i: a83t: bananapi-m3: increase vcc-pd voltage to 3.3V |
| |
| [ 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> |
| --- |
| arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts | 4 ++-- |
| 1 file changed, 2 insertions(+), 2 deletions(-) |
| |
| diff --git a/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts b/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts |
| index c7ce4158d6c8..f250b20af493 100644 |
| --- a/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts |
| +++ b/arch/arm/boot/dts/sun8i-a83t-bananapi-m3.dts |
| @@ -309,8 +309,8 @@ |
| |
| ®_dldo3 { |
| regulator-always-on; |
| - regulator-min-microvolt = <2500000>; |
| - regulator-max-microvolt = <2500000>; |
| + regulator-min-microvolt = <3300000>; |
| + regulator-max-microvolt = <3300000>; |
| regulator-name = "vcc-pd"; |
| }; |
| |
| -- |
| 2.19.1 |
| |