lkml.org 
[lkml]   [2020]   [Jun]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 5.7 239/265] arm64: dts: imx8mm-evk: correct ldo1/ldo2 voltage range
    Date
    From: Robin Gong <yibin.gong@nxp.com>

    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: 78cc25fa265d ("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>
    ---
    arch/arm64/boot/dts/freescale/imx8mm-evk.dts | 4 ++--
    1 file changed, 2 insertions(+), 2 deletions(-)

    diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
    index 951e14a3de0e5..22aed2806fda8 100644
    --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
    +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
    @@ -196,7 +196,7 @@

    ldo1_reg: LDO1 {
    regulator-name = "LDO1";
    - regulator-min-microvolt = <3000000>;
    + regulator-min-microvolt = <1600000>;
    regulator-max-microvolt = <3300000>;
    regulator-boot-on;
    regulator-always-on;
    @@ -204,7 +204,7 @@

    ldo2_reg: LDO2 {
    regulator-name = "LDO2";
    - regulator-min-microvolt = <900000>;
    + regulator-min-microvolt = <800000>;
    regulator-max-microvolt = <900000>;
    regulator-boot-on;
    regulator-always-on;
    --
    2.25.1
    \
     
     \ /
      Last update: 2020-06-29 23:58    [W:4.806 / U:0.220 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site