On Wednesday, January 23, 2019 at 6:01:29 PM UTC+5:30, annapurna bommakanti wrote: > > > Hi All, > > I am able to interface a SDIO module to the mmc3 by modifying the DTS file. > I am able to detect as SDIO on mmc3. But the CM53 fails while trying to > load firmware on to the module. > > info of the MMC2: > > root@am335x-evm:~# cat /sys/kernel/debug/mmc2/ios q > clock: 50000000 Hz > vdd: 21 (3.3 ~ 3.4 V) > bus mode: 2 (push-pull) > chip select: 0 (don't care) > power mode: 2 (on) > bus width: 2 (4 bits) > timing spec: 2 (sd high-speed) > signal voltage: 0 (3.30 V) > driver type: 0 (driver type B) > root@am335x-evm:~# cat /sys/kernel/debug/mmc2/ios > clock ios mmc2:0001/ regs > root@am335x-evm:~# cat /sys/kernel/debug/mmc2/ > clock ios mmc2:0001/ regs > root@am335x-evm:~# cat /sys/kernel/debug/mmc2/regs > mmc2: > sdio irq mode polling > ctx_loss: 1 > > regs: > CON: 0x00000600 > PSTATE: 0x01f70000 > HCTL: 0x00000d02 > SYSCTL: 0x000e0087 > IE: 0x00000000 > ISE: 0x00000000 > CAPA: 0x06e10080 > > > Please find the logs. > Any inputs would be of great help, as I am stuck at data transfer over > SDIO. > > > > > Thanks, > Annapurna.B >
Hi Annapurna, Which module? Wifi? If yes then try to reduce the frequency by setting the max-frequency to 24MHz in the dts file. -Gautam. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/aaa03b5f-da88-47a5-ba48-cce1d62b50ce%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
