nath@gmail.com
> Subject: Re: [PATCH v2 02/12] mmc: sd: add support for signal voltage
> switch procedure
>
> On Fri, Mar 4, 2011 at 6:32 AM, Arindam Nath
> wrote:
> > Host Controller v3.00 adds another Capabilities register. Apart
> > from other things, this new regis
On Fri, Mar 4, 2011 at 6:32 AM, Arindam Nath wrote:
> Host Controller v3.00 adds another Capabilities register. Apart
> from other things, this new register indicates whether the Host
> Controller supports SDR50, SDR104, and DDR50 UHS-I modes. The spec
> doesn't mention about explicit support for
nath@gmail.com
> Subject: Re: [PATCH v2 02/12] mmc: sd: add support for signal voltage
> switch procedure
>
>
> Hi Arindam,
>
> was getting kernel crash on SD card -- fix is below
>
> Philip
>
> On Mar 4, 2011, at 3:32 AM, Arindam Nath wrote:
>
> > Hos
Hi Arindam,
was getting kernel crash on SD card -- fix is below
Philip
On Mar 4, 2011, at 3:32 AM, Arindam Nath wrote:
> Host Controller v3.00 adds another Capabilities register. Apart
> from other things, this new register indicates whether the Host
> Controller supports SDR50, SDR104, and DD
nath@gmail.com
> Subject: Re: [PATCH v2 02/12] mmc: sd: add support for signal voltage
> switch procedure
>
> On Wed, Mar 16, 2011 at 2:30 AM, Nath, Arindam
> wrote:
> > Hi Zhangfei,
> >
> >
> >> -Original Message-
> >> From: zhangfei gao [
top.org; prak...@marvell.com; linux-mmc@vger.kernel.org; Su,
>> Henry; Lu, Aaron; anath....@gmail.com
>> Subject: Re: [PATCH v2 02/12] mmc: sd: add support for signal voltage
>> switch procedure
>>
>> On Tue, Mar 15, 2011 at 7:58 AM, Subhash Jadavani
>>
nath@gmail.com
> Subject: Re: [PATCH v2 02/12] mmc: sd: add support for signal voltage
> switch procedure
>
> On Tue, Mar 15, 2011 at 7:58 AM, Subhash Jadavani
> wrote:
> >
> >
> >> -Original Message-
> >> From: Nath, Arindam [mailto:arindam.n
om; prak...@marvell.com; linux-
>> m...@vger.kernel.org; Su, Henry; Lu, Aaron; anath....@gmail.com
>> Subject: RE: [PATCH v2 02/12] mmc: sd: add support for signal voltage
>> switch procedure
>>
>> Hi Subhash,
>>
>>
>> > -Original Message-
>>
mail.com
> Subject: RE: [PATCH v2 02/12] mmc: sd: add support for signal voltage
> switch procedure
>
> Hi Subhash,
>
>
> > -Original Message-
> > From: Subhash Jadavani [mailto:subha...@codeaurora.org]
> > Sent: Tuesday, March 15, 2011 4:49 PM
&
; Lu, Aaron; anath@gmail.com
> Subject: RE: [PATCH v2 02/12] mmc: sd: add support for signal voltage
> switch procedure
>
>
>
> > -Original Message-
> > From: linux-mmc-ow...@vger.kernel.org [mailto:linux-mmc-
> > ow...@vger.kernel.org] On Behalf Of Nath, Arind
ll.com; linux-
> m...@vger.kernel.org; Su, Henry; Lu, Aaron; anath@gmail.com
> Subject: RE: [PATCH v2 02/12] mmc: sd: add support for signal voltage
> switch procedure
>
> Hi Subhash,
>
>
> > -Original Message-
> > From: Subhash Jadavani [mailto:subha...@codeau
; Lu, Aaron; anath@gmail.com
> Subject: RE: [PATCH v2 02/12] mmc: sd: add support for signal voltage
> switch procedure
>
> Arindam,
>
> During voltage switch, voltage level for CLK, DATA and CMD pads/pins
> should
> be changed from 3.3v to 1.8v. for this SD controller has
Arindam,
During voltage switch, voltage level for CLK, DATA and CMD pads/pins should
be changed from 3.3v to 1.8v. for this SD controller has to modify few bits
in their controller registers and also have to set the voltage level of a
regulator which is powering those pad/pins.
Now with you curre
nath@gmail.com
> Subject: Re: [PATCH v2 02/12] mmc: sd: add support for signal voltage
> switch procedure
>
> On Fri, Mar 4, 2011 at 6:32 AM, Arindam Nath
> wrote:
> > Host Controller v3.00 adds another Capabilities register. Apart
> > from other things,
; Lu, Aaron; anath@gmail.com
> Subject: RE: [PATCH v2 02/12] mmc: sd: add support for signal voltage
> switch procedure
>
>
>
> > -Original Message-
> > From: linux-mmc-ow...@vger.kernel.org [mailto:linux-mmc-
> > ow...@vger.kernel.org] On Behalf Of su
k...@marvell.com; linux-
> m...@vger.kernel.org; henry...@amd.com; aaron...@amd.com;
> anath....@gmail.com
> Subject: RE: [PATCH v2 02/12] mmc: sd: add support for signal voltage
> switch procedure
>
> +1. Looks good to me from sd3.0 spec. prospective.
>
> > -Original
On Fri, Mar 4, 2011 at 6:32 AM, Arindam Nath wrote:
> Host Controller v3.00 adds another Capabilities register. Apart
> from other things, this new register indicates whether the Host
> Controller supports SDR50, SDR104, and DDR50 UHS-I modes. The spec
> doesn't mention about explicit support for
+1. Looks good to me from sd3.0 spec. prospective.
> -Original Message-
> From: linux-mmc-ow...@vger.kernel.org [mailto:linux-mmc-
> ow...@vger.kernel.org] On Behalf Of Arindam Nath
> Sent: Friday, March 04, 2011 5:03 PM
> To: c...@laptop.org
> Cc: zhangfei@gmail.com; prak...@marvell.
Henry; Lu,
> Aaron; anath@gmail.com
> Subject: Re: [PATCH v2 02/12] mmc: sd: add support for signal voltage
> switch procedure
>
>
> > + if (host->version >= SDHCI_SPEC_300)
> > + caps[1] = sdhci_readl(host, SDHCI_CAPABILITIES_1);
>
> Now cap
> + if (host->version >= SDHCI_SPEC_300)
> + caps[1] = sdhci_readl(host, SDHCI_CAPABILITIES_1);
Now caps[1] can be uninitialized (didn't the compiler warn about this?)
Maybe
caps[1] = host->version... ? sdhci_readl() : 0
(or simply an else branch)?
Regards,
Wolfram
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