• BUCK2 efficiency of PCA9450A together with i.MX8M Mini

    Hi   The PMIC PCA9450A has an input range of 2.85V to 5.5V and has six high efficient step-down regulators. To optimize our power design we would like to know the efficiency of the reference design of ...
    Patrick Morger
    last modified by Patrick Morger
  • ADC value read from user space

    Hi Everyone,   I want to read the ADC value for the below pin ADC1_IN0 that we can read from the user space. my expetion is to get interface like sysfs gpio so i can export and use it.   Since this pin mar...
    Nikhil sahu
    last modified by Nikhil sahu
  • Android 9 iMX8MM DDR4 Crash

    RAM is MT40A512M16LY-075:E 2GB.  I used MX8M_Mini_DDR4_RPA_v11 with ddr_tool_v3.10 for calibration and it passes without issue.  I also ran an over-night test and had no problems.  In u-boot I'm se...
    Michael Donahoe
    last modified by Michael Donahoe
  • 8MMINID4-EVK Shutdown feature convert into reboot (while Power is on )

    Hi Team, We have Development Boards & Kits - ARM 8MMINID4-EVK , we are using Android image .  Our requirement is when user give reboot -p  / Shutdown , Device should not going in shutdown mode its s...
    nikunj mehta
    last modified by nikunj mehta
  • 8MMINID4-EVK Power On booting & shutdown modification

    Hi Team, We have Development Boards & Kits - ARM 8MMINID4-EVK , we are using Android image .  Our requirement is when user give reboot -p  / Shutdown , Device should not going in shutdown mode its...
    nikunj mehta
    last modified by nikunj mehta
  • Work with KITPF0100EPEVBE rev. B

    Hello!   Recently we received an KITPF0100EPEVBE evaluation board but as it turned out it was a rev B board. I have attached a photo of the received kit, so you can correct me if I'm wrong.&#...
    Artem Kochetkov
    last modified by Artem Kochetkov
  • Access PMIC registers directly from APs in iMX8qm

    The System Controller firmware API does not have support to access the I2C bus between SCU and the PMIC in iMX8qm. We need to be able to send commands to the PMIC from the Linux user space running in the APs, possibly...
    mehdi.taabouri
    last modified by mehdi.taabouri
  • System Controller API in IMX8QM-MEK

    Hi All,   I am working on Power Management - IMX8QM MEK board. I have to integrate system controller API to put system low power mode.   I integrated successfully and I got the following response,   M...
    vinothkumar s
    last modified by vinothkumar s
  • PMIC_ON_REQ behavior during CPU POR

    HI,   We are designing a custom board using i.MX 8 DualXPlus CPU based on the  i.MX 8QXP MEK board. In order to simplify the Reset Scheme, we are doing the following changes: 1.  The SCU_WDOG_OU...
    Harsh Mistry
    last modified by Harsh Mistry
  • imx8   uuu

    各位,如上图,是基于yocto_4.14.98_2.3.0编译得到的文件, 我这里有两块imx8的板,两块板的DDR,电源管理,EMMC都相同, 板1:旧的PCB板贴的是B版本的imx8芯片 板2:新做的PCB板贴的是C版本的imx8芯片 用uuu可以烧录“板1”,但不能烧录“板2”,错误如下,请问大概问题出在哪里?谢谢。
    zhang ming
    last modified by zhang ming
  • Build mfgtool firmware uboot

    Hi community, I'm working on the i.MX6 sabresd Quad platform with no PMIC.   While I try to burn image with mfgtool and I received log that show no pmic detected.   So I assumed that I need to build ...
    tsung li wang
    last modified by tsung li wang
  • Can PF1550 handle CC charge lower than 100 mA in WARM stage?

    I have a product with a PF1550. I want to charge the battery using constant current of 25 mA max for high temperatures.   In order to do that, I set a CC 100 mA charge limitation for the JEITA1 NORMAL ...
    Anthony Loiseau
    last modified by Anthony Loiseau
  • PCA9450 PMIC_NINT pin behavior

    I'm working on a design using the PCA9450. The system is up and running, and seems fine, but the PMIC_NINT pin is held low all the time except for about 1 second after power in it is driven to 0.4V for 10 milliseconds...
    Michael O'Brien
    last modified by Michael O'Brien
  • Controlling SNVS mode for i.MX8M

    Hi,   Current we're using an imx8m processor. I'd like to be able to make the processor sleep from a button, particularly the "SNVS/RTC mode" where almost everything is turned off. The PMIC used is the PF4210. &...
    Yannick B
    last modified by Yannick B
  • PCA9450 i2c address question

    I am developing custom board based on iMX8M mini + PCA9450A. static const struct udevice_id pca9450_ids[]={ {.compatible = "nxp,pca9450a", .data=0x35,}, {.compatible = "nxp,pca9450b", .data=0x25,}, {} } I can't ...
    chile heng
    last modified by chile heng
  • Programmer for PF4210

    Hi, may I know what tool I need to program the PF4210 please? Only one i found is the KITPFPGMEVME MMPF0100 - Programmer , can it be used for PF4210  also ? Many thanks,
    Enoch Arthur
    last modified by Enoch Arthur
  • PMIC read error | imx6q sabreAI

    Hi All, I am working on imx6q based sabre AI custom board, running android 7.1.Everything works fine on our first version but in our latest version of our custom board,it is showing PMIC read and write error and boot...
    RICHU C J
    last modified by RICHU C J
  • How to use the PCA9450B PMIC with iMX8 Nano & DDR4

    The PCA9450B BUCK6 regulator, used for NVCC_DRAM, defaults to 1.1V  However "standard" DDR4 needs 1.2V  (LPDDR4 uses 1.1V). Obviously BUCK6 in the PMIC needs to be programmed to 1.2V, very early in the Lin...
    frank van hooft
    last modified by frank van hooft
  • VDD_SNVS_0v9 rail on I.mx8 EVK

    Hi, I noticed in that on the I.mx8 EVK , VDD_SNVS_0v9 rail from the PMIC is disconnected and a separate regulator is used to generate this voltage. May I know why this is so. I am designing with the imx8 and pf42...
    Enoch Arthur
    last modified by Enoch Arthur
  • How mem_sleep is working

    Hi All,   I am working in Android automotive and have some doubt regarding deep sleep.   I needs to know how mem command is working for sleep entry and auto wakeup ?   echo mem > /sys/power/state&#...
    vinothkumar s
    last modified by vinothkumar s