BBB I2C device driver for linux Error

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Hi

I bought a BBB for learning purpose and now I’m trying to write a device driver for i2c from scratch just to learn.

The problem I face is according to TRM for am335x I used i2c1 at address 0x4802a000 and did ioremap().
It showed the mapped address in /proc/iomem also.

But when I tried to access using ioread32 from that address it gives creashes saying

“Unable to handle kernel paging request at virtual address 4802a000”.

Need guidance on it.

Thanks.

2

Regards,
John

Hi

I bought a BBB for learning purpose and now I’m trying to write a device driver for i2c from scratch just to learn.

The problem I face is according to TRM for am335x I used i2c1 at address 0x4802a000 and did ioremap().
It showed the mapped address in /proc/iomem also.

But when I tried to access using ioread32 from that address it gives creashes saying

"Unable to handle kernel paging request at virtual address 4802a000”.

https://e2e.ti.com/support/arm/sitara_arm/f/791/t/330787

Regards,
John