Part Number:DRA726
Tool/software: Linux
I have been trying to figure out why the bluetooth range on our u-blox device device is very bad, less than 5 feet for TX.
I have been working with u-blox to solve the issue. The engineer mentioned an issue which might be a cause.
"We have noticed, that TI needs some dedicated attention for the SDIO host controller on various MCUs. We observed that the TI host controller for the OMAP MCU was configuring the controller in polling mode."
I checked on my board and he's right, it is using polling. How do I switch from polling to interrupt driven?
root@actia-global-display:~# cat /sys/kernel/debug/mmc2/regs
mmc2:
sdio irq mode polling
ctx_loss: 1
regs:
CON: 0x00000600
PSTATE: 0x01f00000
HCTL: 0x00000f02
SYSCTL: 0x000d0047
IE: 0x00000000
ISE: 0x00000000
CAPA: 0x21e10080
Michel Catudal
ACTIA Corp