[U-Boot] pxa310 SDHC support.

[aking <jinxin16897123@163.com>]

On 5/26/2014 Monday 6:56 PM, Marek Vasut wrote:
> On Monday, May 26, 2014 at 12:28:49 PM, aking_jin wrote:
>> Hi, Marek
>>
>> On 2014/5/26 Mon 16:59, Marek Vasut wrote:
>>> On Monday, May 26, 2014 at 09:51:58 AM, aking_jin wrote:
>>>> Hi, marek
>>>>
>>>>        I've seen on the Internet that pxa310 support SDHC up to 32GB, but
>>>>
>>>> I'm using u-boot 2014.01, It could initialize OK.
>>>>
>>>>        Device: PXA MMC
>>>>        Manufacturer ID: 3
>>>>        OEM: 5344
>>>>        Name: SS08G
>>>>        Tran Speed: 26000000
>>>>        Rd Block Len: 512
>>>>        SD version 3.0
>>>>        High Capacity: Yes
>>>>        Capacity: 7.4 GiB
>>>>        Bus Width: 4-bit
>>>>        
>>>>        It shows time out while reading block . Is there any particular
>>>>
>>>> process should be add?
>>> It is well possible that the driver is broken on PXA3xx . Note that
>>> mainline U- Boot doesn't really support PXA3xx . Are you working on
>>> PXA3xx support for mainline U-Boot ?
>> I'm looking for support for pxa310 MMC SDHC .
>> In the PXA310 SPEC:
>>
>>       The MMC module is based on the standards outlined in the
>> MultiMediaCard System
>> Specification Version 3.3.1. The SD module manages one SD or SDIO card
>> based on the standards
>> outlined in the SD Memory Card Specification Version 1.10 and SDIO Card
>> Specification Version
>> 1.0
>>
>> I'm doubting if the controller support SDHC (SD 2.0) ?
> The PXA27x controller works even with SDXC , that is tested. I suspect there
> might be some change in the PXA3xx controller, but I don't really know for sure.
> You'd have to check.
Thank you for your answer.  are you using SD mode or SPI Mode? which 
version are you using?
> Also, you didn't really answer my question with regards to porting U-Boot above.
> If you do that, use latest mainline, not 2014.01 .
I just have to add SD support for my board, It's emergency.  sorry for that.
>
> Best regards,
> Marek Vasut


-- 
Best Regards
aking_jin