Re: [PATCH] Disable the non working eMMC on Zoom2/3

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On Tue, Jun 22, 2010 at 7:43 PM, Ghorai, Sukumar <s-ghorai@xxxxxx> wrote:
>
>
>> -----Original Message-----
>> From: zhangfei gao [mailto:zhangfei.gao@xxxxxxxxx]
>> Sent: Tuesday, June 22, 2010 4:51 PM
>> To: Chikkature Rajashekar, Madhusudhan
>> Cc: Tony Lindgren; Menon, Nishanth; Ghorai, Sukumar; linux-
>> omap@xxxxxxxxxxxxxxx; linux-mmc@xxxxxxxxxxxxxxx
>> Subject: Re: [PATCH] Disable the non working eMMC on Zoom2/3
>>
>> On Sat, May 8, 2010 at 5:25 AM, Madhusudhan <madhu.cr@xxxxxx> wrote:
>> >
>> >
>> >> -----Original Message-----
>> >> From: Tony Lindgren [mailto:tony@xxxxxxxxxxx]
>> >> Sent: Thursday, May 06, 2010 10:31 AM
>> >> To: Madhusudhan
>> >> Cc: 'Nishanth Menon'; 'Ghorai, Sukumar'; linux-omap@xxxxxxxxxxxxxxx;
>> >> linux-mmc@xxxxxxxxxxxxxxx
>> >> Subject: Re: [PATCH] Disable the non working eMMC on Zoom2/3
>> >>
>> >> * Madhusudhan <madhu.cr@xxxxxx> [100505 18:31]:
>> >> >
>> >> >
>> >> > > -----Original Message-----
>> >> > > From: Tony Lindgren [mailto:tony@xxxxxxxxxxx]
>> >> >
>> >> > > And what about this "Simulate multi mmc card as one big" patch?
>> >> > >
>> >> > Did not get you, what patch are you referring to?
>> >>
>> >> Oops sorry forgot the link:
>> >>
>> >> https://patchwork.kernel.org/patch/87944/
>> >>
>> > This will not help. I don't know the history of the patch but what this
>> is
>> > intended for is to support multiple MMC cards connected to a single
>> > controller. But on the Zoom the eMMC we are talking about is connected
>> to
>> > MMC2.
>> >
>> > Regards,
>> > Madhu
>> >
>> >> Tony
>> >
>> > --
>> > To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
>> > the body of a message to majordomo@xxxxxxxxxxxxxxx
>> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
>> >
>>
>> Hi, Guys
>>
>> Just wander whether 16G Micron eMMC works on your platform.
>> I also have such issue, 16G Micron emmc can not work with read and
>> write, with data timeout.
>> While 8G Micron eMMC workable.
>> Do you have the same issue?
>
> [Ghorai] we have 16G eMMC in ZOOM3 and 3630-SDP and its working fine. Let me know what board you are using.
> mmc1: new high speed MMC card at address 0001
> PM: Adding info for mmc:mmc1:0001
> mmcblk0: mmc1:0001 STM16G 14.8 GiB
> PM: Adding info for No Bus:mmcblk0
>  mmcblk0: p1 p2
>>
>> Thanks
>

Hi, Ghorai

Thanks for your valueable info.
We also enabled Micron 16G eMMC, two issues stuck us before.
1. The bus_width should be inited otherwise read ext_csd would be fail.
2. The emmc may stay in boot partition and kernel should switch to
user partition, where filesystem is located.

Thanks
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