In EP/RP mode configuration, when using “lspci -v” at the root point, the memory address 0x28000000 works fine with “busybox devmem 0x28000000 32 0x12345678”.
However, when attempting “busybox devmem 0x28000001 32 0x12345678”, it results in a “Bus error (core dumped)”. How can this issue be resolved?
please set this in kernel defconfig so that you can use devmem on this.
CONFIG_STRICT_DEVMEM=n
On the endpoint side, I have already set CONFIG_STRICT_DEVMEM=n. The address 0x28000000 on the root point and the address on the endpoint side can communicate properly. However, when I use “busybox devmem 0x28000001” instead of 0x28000000 on the root point, it results in a “Bus error (core dumped)”.
There is no update from you for a period, assuming this is not an issue any more.
Hence we are closing this topic. If need further support, please open a new one.
Thanks
Sorry for the late response, is this still an issue to support? Thanks