I have to admit that I am a little confused now. Are there now any patches that should be applied to U-Boot regarding the MQ and/or the PLB arbiter configuration?
There is no patch that needs to be applied for PLB arbiter configuration. My earlier patch covered that.
It seems to me that Yuri's configuration from the RAID driver (which will be dropped in the RAID driver soon) is not fully covered in the current U-Boot version.
Yuri's configuration from RAID driver should be droppred coz changing MQ/PLB4 registers from Linux is not recommended
So please let me know if Yuri's original MQ patch should be applied and if there is another PLB arbiter patch that should be applied too.
Yuri's patch does the following - set RLPM (read passing limit) bits in MQ register to 1, - set WRCL (MCIF cycle limit) in MQ registers to 1. In my testing, as far as I can remember, these values were set to 1 by default. I had tested with Canyonlands, Kilauea, Katmai and Glacier boards. So unless Yuri found that these values were not default values in some processor, Yuri's patch should be applied.
Thanks, Prodyut