Hi Olliver,

Sorry for the delay but I was on a place without Internet access.

Is there something wrong with the logs?

On Thursday, May 5, 2016 at 11:43:49 AM UTC+3, Olliver Schinagl wrote:
>
> Hey Christo,
>
> On 04-05-16 21:40, Christo Radev wrote:
>
> Hi Oliver,
>
> I start performance tests for eMMC, SD/MMC, USB, SATA SSD devices and will 
> post the result when ready.
>
> As a beginning I can say that eMMC is accessed via 4-bit bus without 
> matter of the patch used.
> There you are the content of /sys/kernel/debug/mmcX/ios (where X is number 
> of eMMC or SD/MMC device).
> Booted from SD card with 8-bit patched kernel
> root@egpr:~# dmesg | grep mmc
> [    3.599625] sunxi-mmc 1c0f000.mmc: Got CD GPIO
> [    3.631883] sunxi-mmc 1c0f000.mmc: base:0xf08da000 irq:26
> [    3.669058] mmc0: host does not support reading read-only switch, 
> assuming write-enable
> [    3.671674] sunxi-mmc 1c11000.mmc: base:0xf08de000 irq:27
> [    3.672064] mmc0: new high speed SDHC card at address 0007
> [    3.673068] mmcblk0: mmc0:0007 SD04G 3.71 GiB
> [    3.674785]  mmcblk0: p1
> [    3.682261] sunxi-mmc 1c11000.mmc: smc 1 err, cmd 8, RTO !!
> [    3.689280] sunxi-mmc 1c11000.mmc: smc 1 err, cmd 55, RTO !!
> [    3.690146] sunxi-mmc 1c11000.mmc: smc 1 err, cmd 55, RTO !!
> [    3.690977] sunxi-mmc 1c11000.mmc: smc 1 err, cmd 55, RTO !!
> [    3.691808] sunxi-mmc 1c11000.mmc: smc 1 err, cmd 55, RTO !!
> [    3.745505] mmc1: MAN_BKOPS_EN bit is not set
> [    3.749187] sunxi-mmc 1c11000.mmc: smc 1 err, cmd 8, RD EBE !!
> [    3.749229] sunxi-mmc 1c11000.mmc: data error, sending stop command
> [    3.749247] sunxi-mmc 1c11000.mmc: send stop command failed
> [    3.749268] mmc1: switch to bus width 2 failed
> [    3.753586] mmc1: new high speed MMC card at address 0001
> [    3.754479] mmcblk1: mmc1:0001 P1XXXX 3.60 GiB
> [    3.754961] mmcblk1boot0: mmc1:0001 P1XXXX partition 1 16.0 MiB
> [    3.755604] mmcblk1boot1: mmc1:0001 P1XXXX partition 2 16.0 MiB
> [    3.757045]  mmcblk1: p1
> [    4.216879] EXT4-fs (mmcblk0p1): mounted filesystem with writeback 
> data mode. Opts: (null)
> [    7.907002] EXT4-fs (mmcblk0p1): re-mounted. Opts: commit=600,errors=
> remount-ro
>
> root@egpr:~# cat /sys/kernel/debug/mmc0/ios
> 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@egpr:~# cat /sys/kernel/debug/mmc1/ios
> 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:    1 (mmc high-speed)
> signal voltage: 0 (3.30<span s
>
>

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