MCIMX7SABRE : Booting with dual displays EPD and HDMI Displays

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MCIMX7SABRE : Booting with dual displays EPD and HDMI Displays

328 Views
hiroyukihara
Contributor III

Hello,

 

Hard configuration
 I.MX 7 Dual SABRE Board + IMXEBOOKDC4-EPD
OS / Kernel
 Android 7.1.1
 Kernel 4.1.15


Building android for imx7 based on Android User's Guide, the following will be created
 boot-imx7d.img / boot-imx7d-epdc.img
 recovery-imx7d.img / recovery-imx7d-epdc.img
 u-boot-imx7d. imx / u-boot-imx7d-epdc.imx
   system.img
Images for EPD and LCD are created.
(Why do you understand separately?)

 

boot-imx7d-epdc.img. recovery-imx7d-epdc.img. u boot-imx7d-epdc.imx. system.img
After writing the above file to SD, Android started, it was displayed on EPD.

 

Next, in order to display on the dual display of HDMI and EPD,
It changed to the following of imx7d-sdb-epdc.dtsi.
& Sii902x {
Status = "okay";        Before modification: disabled
};

& Lcdif {
        Status = "okay";       Before modification: disabled
};
I corrected the above and created boot-imx7d-epdc.img, recovery-imx7d-epdc.img, u-boot-imx7d-epdc.imx again.
I wrote Android to SD but I could not display EPD or HDMI.

Do you know what caused the problem?

(I attached the log)

Original Attachment has been moved to: dual_disp.log.odt

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hiroyukihara
Contributor III

I tried to operate separately.
EPD       not display
HDMI  not display
(Parallel LCD was displayed)

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b45499
NXP TechSupport
NXP TechSupport

Hi,

Have you tried the demo images? Does it work? I will test on my board, then give you reply.
Have a great day,
Rita

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b45499
NXP TechSupport
NXP TechSupport

Does the HDMI and EPD can work separately?

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