Commit 238f9188 authored by Martin Kepplinger's avatar Martin Kepplinger Committed by Shawn Guo
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arm64: dts: imx8mq-librem5: set audio-1v8 always-on 



Unfortunately the codec can't be switched off on it's own. It would ground
the whole bus it's connected to (because of it's built-in diodes to VDD on
i2c pins), making all the other devices on the same bus inaccessible:

[    0.237154] lm3692x 2-0036: Cannot read/clear faults: -11
[    0.242628] lm3692x 2-0036: Fail writing initialization values
[    0.286462] [drm:drm_bridge_attach] *ERROR* failed to attach bridge /soc@0/bus@30800000/mipi-dsi@30a00000 to encoder None-34: -517

Work around this hardware limitation by keeping audio-1v8 enabled.

Signed-off-by: default avatarMartin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent fa2a1ec5

arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi

+1 −0
Original line number Diff line number Diff line
@@ -91,6 +91,7 @@ reg_aud_1v8: regulator-audio-1v8 { 
		regulator-max-microvolt = <1800000>;

		gpio = <&gpio1 4 GPIO_ACTIVE_HIGH>;

		enable-active-high;

		regulator-always-on;

	};



	reg_mic_2v4: regulator-mic-2v4 {