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Subject[PATCH 2/3] arm64: dts: imx8mq-librem5-r3: Mark buck3 as always on
Date
From: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>

Commit 66d3f246d79f ("arm64: dts: 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 <sebastian.krzyszkowiak@puri.sm>
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
---
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 0d38327043f8..cd3c3edd48fa 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-librem5-r3.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5-r3.dts
@@ -28,6 +28,10 @@ &bq25895 {
ti,termination-current = <144000>; /* uA */
};

+&buck3_reg {
+ regulator-always-on;
+};
+
&proximity {
proximity-near-level = <25>;
};
--
2.30.1
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