eMMC problems on L3.10.17GA

MarkoPanger — Thu, 26 Jun 2014 22:20:18 GMT

Hi !

I'm using the L3.10.17GA release and I'm facing some eMMC problems on our custom board (based on sabreSD). Looks like eMMC is getting stuck somewhere during initialization. Consequently the kernel doesn't sees the partitions. To exclude HW problems there are 3 things to note:

1) In uboot it works - always

2) Sometimes it works - very rare. I'm able to see and access the partitions.

3) It always work if we use the latest released LTIB kernel

We are using USDHC port 4.

Tracing down the flow it looks like the eMMC is stuck in the "__mmc_switch" function when trying to switch mode to 8 bits. It stays there for 10 minutes and then it retries, but still with no luck.

Here is part of the log showing the flow:

root@sami-imx6q:~# dmesg | grep mmc

[ 1.222715] mmc0: no vqmmc regulator found

[ 1.270975] mmc0: SDHCI controller on 219c000.usdhc [219c000.usdhc] using ADMA

[ 1.385848] mmc0: BKOPS_EN bit is not set

[ 1.385855] __mmc_switch@419: index: 175, value: 1, timeout_ms: 0

[ 1.387585] __mmc_switch@419: index: 185, value: 1, timeout_ms: 0

[ 1.392723] __mmc_switch@419: index: 183, value: 2, timeout_ms: 0

[ 6.815696] mmc0: Got data interrupt 0x00100000 even though no data operation was in progress.

[ 601.390975] mmc0: Card stuck in programming state! __mmc_switch

[ 601.395606] __mmc_switch@419: index: 183, value: 1, timeout_ms: 0

[ 601.400539] __mmc_switch@419: index: 183, value: 0, timeout_ms: 0

[ 601.405480] mmc0: switch to bus width 1 ddr 0 failed

[ 601.409175] mmc0: error -110 whilst initialising MMC card

[ 601.561063] mmc0: BKOPS_EN bit is not set

[ 601.563795] __mmc_switch@419: index: 175, value: 1, timeout_ms: 0

[ 601.571383] __mmc_switch@419: index: 185, value: 1, timeout_ms: 0

[ 601.581882] __mmc_switch@419: index: 183, value: 2, timeout_ms: 0

[ 607.009685] mmc0: Got data interrupt 0x00100000 even though no data operation was in progress.

As you can see it stays there for 10 minutes and the retries.

Any idea what could be wrong ?

Re: eMMC problems on L3.10.17GA

qiang_li-mpu_se — Fri, 11 Jul 2014 08:08:40 GMT

What's the EMMC version for your chip?

Re: eMMC problems on L3.10.17GA

YixingKong — Tue, 15 Jul 2014 03:28:06 GMT

Marko

Could you please reply the question from Qiang Li as soon as possible?

Thanks,

Yixing

Re: eMMC problems on L3.10.17GA

YixingKong — Wed, 30 Jul 2014 06:27:36 GMT

Marko

How is your issue? We will close the DI as no reply from you. If you still have further question please come here again or create a new DI.

Thanks,

Yixing

topic Re: eMMC problems on L3.10.17GA in i.MX Processors

eMMC problems on L3.10.17GA

Re: eMMC problems on L3.10.17GA

Re: eMMC problems on L3.10.17GA

Re: eMMC problems on L3.10.17GA