From e5da8b37ce34d8bfe3b448a7dbd815e6577156b5 Mon Sep 17 00:00:00 2001 From: Sebastian Krzyszkowiak Date: Mon, 15 Mar 2021 09:35:30 +0100 Subject: [PATCH] arm64: dts: imx8mq-librem5-r3: Mark buck3 as always on [ Upstream commit a362b0cc94d476b097ba0ff466958c1d4e27e219 ] Commit 99e71c029213 ("arm64: dts: imx8mq-librem5: Don't mark buck3 as always on") removed always-on marking from GPU regulator, which is great for power saving - however it introduces additional i2c0 traffic which can be deadly for devices from the Dogwood batch. To workaround the i2c0 shutdown issue on Dogwood, this commit marks buck3 as always-on again - but only for Dogwood (r3). Signed-off-by: Sebastian Krzyszkowiak Signed-off-by: Martin Kepplinger Signed-off-by: Shawn Guo Signed-off-by: Sasha Levin --- arch/arm64/boot/dts/freescale/imx8mq-librem5-r3.dts | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5-r3.dts b/arch/arm64/boot/dts/freescale/imx8mq-librem5-r3.dts index 6704ea2..cc29223 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-r3.dts +++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-r3.dts @@ -22,6 +22,10 @@ ti,termination-current = <144000>; /* uA */ }; +&buck3_reg { + regulator-always-on; +}; + &proximity { proximity-near-level = <25>; }; -- 2.7.4