This is a note to let you know that I've just added the patch titled arm64: dts: imx8mn-ddr4-evk: correct ldo1/ldo2 voltage range to the 5.7-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: arm64-dts-imx8mn-ddr4-evk-correct-ldo1-ldo2-voltage-range.patch and it can be found in the queue-5.7 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From cfb12c8952f617df58d73d24161e539a035d82b0 Mon Sep 17 00:00:00 2001 From: Robin Gong <yibin.gong@xxxxxxx> Date: Fri, 22 May 2020 18:44:51 +0800 Subject: arm64: dts: imx8mn-ddr4-evk: correct ldo1/ldo2 voltage range From: Robin Gong <yibin.gong@xxxxxxx> commit cfb12c8952f617df58d73d24161e539a035d82b0 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.mx8mn 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: 3e44dd09736d ("arm64: dts: imx8mn-ddr4-evk: Add rohm,bd71847 PMIC support") Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Robin Gong <yibin.gong@xxxxxxx> Reviewed-by: Dong Aisheng <aisheng.dong@xxxxxxx> Reviewed-by: Fabio Estevam <festevam@xxxxxxxxx> Signed-off-by: Shawn Guo <shawnguo@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts +++ b/arch/arm64/boot/dts/freescale/imx8mn-ddr4-evk.dts @@ -101,7 +101,7 @@ ldo1_reg: LDO1 { regulator-name = "LDO1"; - regulator-min-microvolt = <3000000>; + regulator-min-microvolt = <1600000>; regulator-max-microvolt = <3300000>; regulator-boot-on; regulator-always-on; @@ -109,7 +109,7 @@ ldo2_reg: LDO2 { regulator-name = "LDO2"; - regulator-min-microvolt = <900000>; + regulator-min-microvolt = <800000>; regulator-max-microvolt = <900000>; regulator-boot-on; regulator-always-on; Patches currently in stable-queue which might be from yibin.gong@xxxxxxx are queue-5.7/arm64-dts-imx8mm-evk-correct-ldo1-ldo2-voltage-range.patch queue-5.7/regualtor-pfuze100-correct-sw1a-sw2-on-pfuze3000.patch queue-5.7/arm64-dts-imx8mn-ddr4-evk-correct-ldo1-ldo2-voltage-range.patch