i.MX ProcessorsのトピックProblems with im6 booting when connected to HDMI

Problems with im6 booting when connected to HDMI

charleshuang — Tue, 30 Jul 2024 10:22:05 GMT

Hi NXP,

We are using the IMX6 with Yocto 2.1 and kernel 4.1.15. when we connected the HDMI, performing a software reboot results in the system halting at U-Boot and failing to proceed into the kernel.

Adv-Boot SPL 2016.03-3430A1LIV8940+g8aa465eb (Apr 29 2019 - 15:02:28)
BOOT_DEVICE_AUTO
MMC: no card present
spl: mmc dev 0 init failed
MMC read: dev # 1, block # 3,count 1200 ...
booting from iNAND
Jumping to U-Boot

U-Boot 2016.03-3430A1LIV8940+g8aa465eb (Apr 29 2019 - 15:02:28 +0000)

CPU: Freescale i.MX6D rev1.5 996 MHz (running at 792 MHz)
CPU: Extended Commercial temperature grade (-20C to 105C) at 49C
Reset cause: POR
Board: MX6-SabreSD
I2C: ready
DRAM: 1 GiB
MMC: FSL_SDHC: 0, FSL_SDHC: 1
JEDEC ID: 0xef:0x40:0x16
In: serial
Out: serial
Err: serial
JEDEC ID: 0xef:0x40:0x16
MAC addr = 0x74:0xFE:0x48:0x98:0x4F:0x0A
booting from iNAND
Fastboot: Normal
flash target is MMC:1
Net: FEC [PRIME]
Normal Boot
Hit any key to stop autoboot: 0
switch to partitions #0, OK
mmc1(part 0) is current device
reading boot.scr
** Unable to read file boot.scr **
reading zImage
6514216 bytes read in 321 ms (19.4 MiB/s)
Booting from mmc ...
reading imx6q-rsb3430-a1.dtb
49936 bytes read in 19 ms (2.5 MiB/s)
Kernel image @ 0x12000000 [ 0x000000 - 0x636628 ]
## Flattened Device Tree blob at 18000000
Booting using the fdt blob at 0x18000000
Using Device Tree in place at 18000000, end 1800f30f

Starting kernel ...

Thanks,

Re: Problems with im6 booting when connected to HDMI

Bio_TICFSL — Wed, 31 Jul 2024 14:39:46 GMT

Hello,

The i.MX6 does not have HDMI you must check which device are you using? maybe it is for another vendor and from nxp, contact your vendor.

Regards

Re: Problems with im6 booting when connected to HDMI

charleshuang — Thu, 08 Aug 2024 10:13:31 GMT

I am currently using the i.MX 6Quad Evaluation Kit with the operating system version L4.1.15_2.0.0. When I use the command to start HDMI:"setenv mmcargs setenv bootargs console=${console},${baudrate} ${smp} root=${mmcroot} ${bootargs} video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24".
it causes the system to be unable to boot. The link to the video is as follows. https://drive.google.com/file/d/1qp7K_O0OaKXG8FWFuXtlbC7mbigGqbxb/view?usp=sharing

Re: Problems with im6 booting when connected to HDMI

Bio_TICFSL — Thu, 08 Aug 2024 13:58:44 GMT

Hi,

Before build new UBoot image, the display type can be selected from file uboot-imx\include\configs\mx6q_sabresd.h
// Select one of the output mode
#define IPU_OUTPUT_MODE_HDMI
//#define IPU_OUTPUT_MODE_LVDS
//#define IPU_OUTPUT_MODE_LCD

-- Uboot parameters for video mode
1080P HDMI:
"video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24,bpp=32 fb0base=0x27b00000 fbmem=28M hdmi_audio_clk=148500000"

720P HDMI:

"video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24,bpp=32 fb0base=0x27b00000 fbmem=28M hdmi_audio_clk=74250000"

Regards