Hello,
It seems I have a similar problem, sdm looks stucking while accessing dcdc+power management chip with slave address 0x47 while re-programming sof, i saw in devkit schematics ltc3888 is configured with slave address 0x47. The kit user guide asking to set the pwrmgt parameters (0x47, slave deivce type - others etc). i've tried setting other devices even but no luck. I able to program *.sof for the first time after a power cycle, then same *.sof re-programming fails with the following error. To program sof again I have to powercycle!
Error(18948): Error message received from device: External hardware access error. (Subcode 0xC80E, Info 0x00000047, Location 0x00001800)
it looks due to some reason smbus hung in an unrecoverable state after first time sof program, not allowing sdm to access again? needs to be powercycled.. please help how to fix this!
devkit:
DK-DEV-AGI027RBES
Thanks,
Shivaji M