imx7ulpevk LCD(TFT3P5581-T) is not working

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imx7ulpevk LCD(TFT3P5581-T) is not working

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Raxesh-Oriya
Contributor III

I have a imx7ulpevk along with TFT3P5581-T LCD. I flashed imx-image-full-imx7ulpevk from L4.19.35_1.1.0_images_MX7ULPEVK package on uSD card. With this image I see serial logs but nothing is coming on LCD display except backlight.

Here are logs related to display:

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pwm-backlight backlight: backlight supply power not found, using dummy regulator
pwm-backlight backlight: Linked as a consumer to regulator.0
mipi_dsi_northwest 40a90000.mipi_dsi: i.MX MIPI DSI driver probed
adv7535 probing phase
adv7535 0-003d: main addr = 0x3d
i2c i2c-0: chip_rev = 0x14
adv7535 0-003d: dsi cec addr = 0x78
adv7535 0-003d: adv7535 probe finished
mxsfb 40aa0000.lcdif: 40aa0000.lcdif supply lcd not found, using dummy regulator
mxsfb 40aa0000.lcdif: Linked as a consumer to regulator.0
mipi_dsi_northwest 40a90000.mipi_dsi: MIPI DSI dispdv inited
mxsfb 40aa0000.lcdif: registered mxc display driver mipi_dsi_northwest
Console: switching to colour frame buffer device 80x30

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I even tried to change dtb file with following steps:

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setenv fdt_file imx7ulp-evkb-mipi.dtb
saveenv
boot

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Am I missing anything?

 

 

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igorpadykov
NXP Employee
NXP Employee

Hi Raxesh

 

some board revisions require reworking for enabling mipi, it is described on p.6  MIPI Display & Touch

SPF-29164 schematic   MCIMX7ULP-EVK Design Files

 

Best regards
igor

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igorpadykov
NXP Employee
NXP Employee

Hi Raxesh

 

some board revisions require reworking for enabling mipi, it is described on p.6  MIPI Display & Touch

SPF-29164 schematic   MCIMX7ULP-EVK Design Files

 

Best regards
igor

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