From: Chris Ball <cjb@laptop.org>
To: Namjae Jeon <linkinjeon@gmail.com>
Cc: Subhash Jadavani <subhashj@codeaurora.org>,
linux-mmc@vger.kernel.org, linux-arm-msm@vger.kernel.org,
Girish K S <girish.shivananjappa@linaro.org>
Subject: Re: [PATCH v1 1/1] mmc: core: fix power class selection
Date: Tue, 03 Apr 2012 07:32:14 -0400 [thread overview]
Message-ID: <87fwclhwzl.fsf@laptop.org> (raw)
In-Reply-To: <CAKYAXd_9AwrBpbVoZxPN6JNcg1SQP6pemJ4gAY4gZQKRQexqmg@mail.gmail.com> (Namjae Jeon's message of "Tue, 3 Apr 2012 17:06:35 +0900")
Hi,
On Tue, Apr 03 2012, Namjae Jeon wrote:
> 2012/4/3 Girish K S <girish.shivananjappa@linaro.org>:
>> On 3 April 2012 15:55, Subhash Jadavani <subhashj@codeaurora.org> wrote:
>>> mmc_select_powerclass() function returns error if eMMC
>>> VDD level supported by host is between 2.7v to 3.2v.
>>>
>>> According to eMMC specification, valid voltage for high
>>> voltage cards is 2.7v to 3.6v. This patch ensures that
>>> 2.7v to 3.6v VDD range is treated as valid range.
>>>
>>> Also, failure to set the power class shouldn't be treated
>>> as fatal error because even if setting the power class
>>> fails, card can still work in default power class.
>>> If mmc_select_powerclass() returns error, just print
>>> the warning message and go ahead with rest of the card
>>> initialization.
>>>
>>> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
>> looks good to me
>> Acked By: Girish K S <girish.shivananjappa@linaro.org>
>
> I double checked with specification. this patch make good sense.
> Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Thanks, pushed to mmc-next for 3.4.
- Chris.
--
Chris Ball <cjb@laptop.org> <http://printf.net/>
One Laptop Per Child
next prev parent reply other threads:[~2012-04-03 11:32 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-03 6:55 [PATCH v1 1/1] mmc: core: fix power class selection Subhash Jadavani
2012-04-03 7:19 ` Girish K S
2012-04-03 8:06 ` Namjae Jeon
2012-04-03 11:32 ` Chris Ball [this message]
2012-04-03 15:24 ` Saugata Das
2012-04-03 15:50 ` Subhash Jadavani
2012-04-03 16:17 ` Saugata Das
2012-04-03 16:44 ` Subhash Jadavani
2012-04-03 17:06 ` Luca Porzio (lporzio)
2012-04-09 12:46 ` Subhash Jadavani
2012-04-03 18:48 ` Saugata Das
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