Commit 90bd9c61 authored May 22, 2020 by Robin Gong Committed by Sasha Levin Jun 30, 2020

arm64: dts: imx8mm-evk: correct ldo1/ldo2 voltage range



commit 4fd6b5735c03c0955d93960d31f17d7144f5578f upstream.

Correct ldo1 voltage range from wrong high group(3.0V~3.3V) to low group
(1.6V~1.9V) because the ldo1 should be 1.8V. Actually, two voltage groups
have been supported at bd718x7-regulator driver, hence, just corrrect the
voltage range to 1.6V~3.3V. For ldo2@0.8V, correct voltage range too.
Otherwise, ldo1 would be kept @3.0V and ldo2@0.9V which violate i.mx8mm
datasheet as the below warning log in kernel:

[    0.995524] LDO1: Bringing 1800000uV into 3000000-3000000uV
[    0.999196] LDO2: Bringing 800000uV into 900000-900000uV

Fixes: 78cc25fa ("arm64: dts: imx8mm-evk: Add BD71847 PMIC")
Cc: stable@vger.kernel.org
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 73f79b42

arch/arm64/boot/dts/freescale/imx8mm-evk.dts

+2 −2

Original line number	Diff line number	Diff line
		@@ -231,7 +231,7 @@

		ldo1_reg: LDO1 {
		regulator-name = "LDO1";
		regulator-min-microvolt = <3000000>;
		regulator-min-microvolt = <1600000>;
		regulator-max-microvolt = <3300000>;
		regulator-boot-on;
		regulator-always-on;
		@@ -239,7 +239,7 @@

		ldo2_reg: LDO2 {
		regulator-name = "LDO2";
		regulator-min-microvolt = <900000>;
		regulator-min-microvolt = <800000>;
		regulator-max-microvolt = <900000>;
		regulator-boot-on;
		regulator-always-on;