[ath10k] not working in 64 bit with >2GB Ram

[paresh chaudhary]

Hi Team,

We need your help regarding ath10k module.

We are using ath10k wifi module with T1040 processor. We have total 8GB DDR in a system. 

The ath10k is working fine on a 32bit system but it's not working on 64 bit system. We are getting error ( ath10k_pci 0001:01:00.0: failed to transmit packet : drivers/net/wireless/ath/ath10k/mac.c). 


NOTE: One interesting point is that when we set DDR size is equal to 2GB from uboot console rather than to use full 8GB  (setenv bootargs "root=/dev/ram rw console=ttyS0,115200 quiet mem=2050M") then ath10k is working fine on a 64bit machine. 


Is it related to DMA? Do you have a patch to resolve this?


We are using linux-fsl-sdk-v2.0 ( 4.1.35) from nxp.

Regards, 
Paresh