memtool access IPU_DI0_GENERAL Register fail

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memtool access IPU_DI0_GENERAL Register fail

Contributor IV

Hi jamesbone ,

We has some LVDS Panel pixel not correct issue.

Base on this link

LVDS panel display corruption

We want to use memtool to access  IPU_DI0_GENERAL register of i.MX6Q.

But it always fail. (4.1.15 _2.1.0 and JB4.3)

MY Command

./memtool -32 0x02640000 1

My Uboot setting base on JB4.3

bootargs=console=ttymxc0,115200 init=/init video=mxcfb0:dev=ldb,bpp=32

video=mxcfb1:off video=mxcfb2:off fbmem=10M fb0base=0x27b00000 vmalloc=400M

My Uboot setting base on 4.1.15 kernel

mmcargs=setenv bootargs console=${console},${baudrate} root=${mmcroot} video=mxcfb0:dev=ldb

It test in MX6QSabreSD demo board.

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1 Reply

NXP Employee
NXP Employee

For those BSP, the LVDS display was assigned on IPU2, so the clock to IPU1 is off after booted, without clock to access the IPU1, hang up will happen.

So you should access the IPU2:

./memtool -32 0x02A40000 1