diff mbox series

[v2,2/3] arm64: dts: imx8mq-librem5-r3: Mark buck3 as always on

Message ID 20210315083531.3743183-3-martin.kepplinger@puri.sm (mailing list archive)
State New, archived
Headers show
Series Librem 5 phone dts fixes | expand

Commit Message

Martin Kepplinger March 15, 2021, 8:35 a.m. UTC 
From: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>

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 <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 mbox series

Patch

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>;
 };