About WLeun.3

WLeun.3 · 2022-06-08

Hi all, I am using stm32mp157f-dk2 with ecosystem 3.1.During development, I need to update the device tree and kernel config very often.My current approach is to do bitbake -c cleansstate <image> bitbake virtual/kernel -c menuconfig bitbake <image>Ho...

WLeun.3 · 2022-05-25

Hi all, I am studying the pmic of stm32mp157f-dk2.My ultimate goal is to write a device tree structure for other pmic chip like tps65 series to replace the stpmic&i2c4{ ... stusb1600@28{ compatible = "st,stusb1600"; reg = <0...

WLeun.3 · 2022-04-11

Hi everyone, I am using stm32mp157f-dk2 with ecosystem 3.1.I am interested to store the board information of my future product using the OTP featureAfter reading the reference manual, ch3 and 4, I have the following doubtDo I need any extra hardware ...

WLeun.3 · 2022-03-21

Hi everyone, @Kevin HUBER I am using stm32mp157f-dk2 with ecosystem 3.1, with weston support.I connected the HDMI display to the development kit, reset the device, but nothing displayed.After checking, modetest show that the HDMI are properly conn...

WLeun.3 · 2022-03-07

Hi everyone, I am using stm32mp157f-dk2 with ecosystem 3.1.I want to configure the usb type C port(CN7) as serial port, and communicate with the host PC.This article helps me a lot. https://wiki.st.com/stm32mpu/wiki/USB_overview#How_to_configure_USB_...

WLeun.3 · 2022-06-06

Hi @PatrickF , Thanks for your advices.The I2C lanes do have activity when I do i2cdetect, which suggests the dt are fine, and it is more like a hardware issue. Finally I found that I have not ground the evaluation kit and my testing board properly,...

WLeun.3 · 2022-06-01

Hi @PatrickF , I have a follow up question.Now my device tree become &i2c5{ pinctrl-names = "default", "sleep"; pinctrl-0 = <&i2c5_pins_mx>; pinctrl-1 = <&i2c5_sleep_pins_mx>; status = "okay"; /* USER CODE BEGIN i2c5 */ tps65023@48 { compa...

WLeun.3 · 2022-04-11

OK, I have come across with this articlehttps://wiki.st.com/stm32mpu/wiki/How_to_update_OTP_with_U-BootIt solve my problem (1) and (3)Only problem (2) remain.

WLeun.3 · 2022-04-07

Hi @Kevin HUBER , Thanks for your help! And yes, it is the missing LTDC configuration that cause all the troubles. It works perfectly now.I agree that the backlight error is related to dsi display only. It does not affect my hdmi display and the err...

WLeun.3 · 2022-04-06

Hi, It has been almost 3 weeks since the original post, but I have yet to receive any response... last week I tried the starter package to see if the hdmi display correctly. It does, but I noticed two things.the backlight error exist even for the sta...

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