On Sat, 12 Jan 2008 08:02:37 -0500
Robin Getz <[EMAIL PROTECTED]> wrote:
>
> According to the HW folks - it is exactly as Pierre indicated - in theory it
> should work, 4-bit MMC requires usage of different set of commands as
> compared to 4-bit SD, so it should be just software - although no
On Jan 12, 2008 9:02 PM, Robin Getz <[EMAIL PROTECTED]> wrote:
> On Fri 11 Jan 2008 12:52, Robin Getz pondered:
>
> > On Fri 11 Jan 2008 04:35, Pierre Ossman pondered:
> > > On Fri, 11 Jan 2008 04:08:53 -0500
> > > "Mike Frysinger" <[EMAIL PROTECTED]> wrote:
> > >
> > > > On Jan 11, 2008 3:40 AM,
On Fri 11 Jan 2008 12:52, Robin Getz pondered:
> On Fri 11 Jan 2008 04:35, Pierre Ossman pondered:
> > On Fri, 11 Jan 2008 04:08:53 -0500
> > "Mike Frysinger" <[EMAIL PROTECTED]> wrote:
> >
> > > On Jan 11, 2008 3:40 AM, Pierre Ossman <[EMAIL PROTECTED]> wrote:
> > > > So it's far more probable
On Fri 11 Jan 2008 12:52, Robin Getz pondered:
On Fri 11 Jan 2008 04:35, Pierre Ossman pondered:
On Fri, 11 Jan 2008 04:08:53 -0500
Mike Frysinger [EMAIL PROTECTED] wrote:
On Jan 11, 2008 3:40 AM, Pierre Ossman [EMAIL PROTECTED] wrote:
So it's far more probable that you've
On Jan 12, 2008 9:02 PM, Robin Getz [EMAIL PROTECTED] wrote:
On Fri 11 Jan 2008 12:52, Robin Getz pondered:
On Fri 11 Jan 2008 04:35, Pierre Ossman pondered:
On Fri, 11 Jan 2008 04:08:53 -0500
Mike Frysinger [EMAIL PROTECTED] wrote:
On Jan 11, 2008 3:40 AM, Pierre Ossman [EMAIL
On Sat, 12 Jan 2008 08:02:37 -0500
Robin Getz [EMAIL PROTECTED] wrote:
According to the HW folks - it is exactly as Pierre indicated - in theory it
should work, 4-bit MMC requires usage of different set of commands as
compared to 4-bit SD, so it should be just software - although no one
On Fri 11 Jan 2008 04:35, Pierre Ossman pondered:
> On Fri, 11 Jan 2008 04:08:53 -0500
> "Mike Frysinger" <[EMAIL PROTECTED]> wrote:
>
> > On Jan 11, 2008 3:40 AM, Pierre Ossman <[EMAIL PROTECTED]> wrote:
> > > So it's far more probable that you've misdiagnosed your error than
> this being the
On Fri, 11 Jan 2008 18:22:14 +0800
"Bryan Wu" <[EMAIL PROTECTED]> wrote:
>
> I guess it is for MMC/SD card insert detection. Is it related with the
> 4-bit MMC and 4-bit SD?
> Actually, there are some issues about the card insert detection on
> BF54x SDH. Following is some comments of our
On Jan 11, 2008 6:05 PM, Pierre Ossman <[EMAIL PROTECTED]> wrote:
> On Fri, 11 Jan 2008 04:47:44 -0500
> "Mike Frysinger" <[EMAIL PROTECTED]> wrote:
>
> > Cliff should be able to enumerate the cards he has tested and the
> > issues he's run into. i'll see if i cant get more in depth
> >
On Fri, 11 Jan 2008 04:47:44 -0500
"Mike Frysinger" <[EMAIL PROTECTED]> wrote:
> Cliff should be able to enumerate the cards he has tested and the
> issues he's run into. i'll see if i cant get more in depth
> information from the hardware guys beyond the documentation on the sdh
> already
On Jan 11, 2008 4:35 AM, Pierre Ossman <[EMAIL PROTECTED]> wrote:
> "Mike Frysinger" <[EMAIL PROTECTED]> wrote:
> > On Jan 11, 2008 3:40 AM, Pierre Ossman <[EMAIL PROTECTED]> wrote:
> > > So it's far more probable that you've misdiagnosed your error than this
> > > being the actual problem.
> >
>
On Fri, 11 Jan 2008 04:08:53 -0500
"Mike Frysinger" <[EMAIL PROTECTED]> wrote:
> On Jan 11, 2008 3:40 AM, Pierre Ossman <[EMAIL PROTECTED]> wrote:
> > So it's far more probable that you've misdiagnosed your error than this
> > being the actual problem.
>
> the guys who design the silicon are
On Jan 11, 2008 3:40 AM, Pierre Ossman <[EMAIL PROTECTED]> wrote:
> "Bryan Wu" <[EMAIL PROTECTED]> wrote:
> > We were told this is an hardware design issue, so please help us to
> > workaround it in software side with Mike's patch.
>
> So it's far more probable that you've misdiagnosed your error
On Fri, 11 Jan 2008 14:17:01 +0800
"Bryan Wu" <[EMAIL PROTECTED]> wrote:
> We were told this is an hardware design issue, so please help us to
> workaround it in software side with Mike's patch.
I'm afraid that's insufficient motivation for this change. All documentation
and real world tests
On Fri, 11 Jan 2008 14:17:01 +0800
Bryan Wu [EMAIL PROTECTED] wrote:
We were told this is an hardware design issue, so please help us to
workaround it in software side with Mike's patch.
I'm afraid that's insufficient motivation for this change. All documentation
and real world tests say that
On Jan 11, 2008 3:40 AM, Pierre Ossman [EMAIL PROTECTED] wrote:
Bryan Wu [EMAIL PROTECTED] wrote:
We were told this is an hardware design issue, so please help us to
workaround it in software side with Mike's patch.
So it's far more probable that you've misdiagnosed your error than this
On Jan 11, 2008 6:05 PM, Pierre Ossman [EMAIL PROTECTED] wrote:
On Fri, 11 Jan 2008 04:47:44 -0500
Mike Frysinger [EMAIL PROTECTED] wrote:
Cliff should be able to enumerate the cards he has tested and the
issues he's run into. i'll see if i cant get more in depth
information from the
On Fri, 11 Jan 2008 04:08:53 -0500
Mike Frysinger [EMAIL PROTECTED] wrote:
On Jan 11, 2008 3:40 AM, Pierre Ossman [EMAIL PROTECTED] wrote:
So it's far more probable that you've misdiagnosed your error than this
being the actual problem.
the guys who design the silicon are telling us it
On Jan 11, 2008 4:35 AM, Pierre Ossman [EMAIL PROTECTED] wrote:
Mike Frysinger [EMAIL PROTECTED] wrote:
On Jan 11, 2008 3:40 AM, Pierre Ossman [EMAIL PROTECTED] wrote:
So it's far more probable that you've misdiagnosed your error than this
being the actual problem.
the guys who
On Fri, 11 Jan 2008 04:47:44 -0500
Mike Frysinger [EMAIL PROTECTED] wrote:
Cliff should be able to enumerate the cards he has tested and the
issues he's run into. i'll see if i cant get more in depth
information from the hardware guys beyond the documentation on the sdh
already available in
On Fri, 11 Jan 2008 18:22:14 +0800
Bryan Wu [EMAIL PROTECTED] wrote:
I guess it is for MMC/SD card insert detection. Is it related with the
4-bit MMC and 4-bit SD?
Actually, there are some issues about the card insert detection on
BF54x SDH. Following is some comments of our bfin-sdh driver
On Fri 11 Jan 2008 04:35, Pierre Ossman pondered:
On Fri, 11 Jan 2008 04:08:53 -0500
Mike Frysinger [EMAIL PROTECTED] wrote:
On Jan 11, 2008 3:40 AM, Pierre Ossman [EMAIL PROTECTED] wrote:
So it's far more probable that you've misdiagnosed your error than
this being the actual problem.
On Jan 11, 2008 1:17 AM, Bryan Wu <[EMAIL PROTECTED]> wrote:
> On Jan 10, 2008 7:57 PM, Pierre Ossman <[EMAIL PROTECTED]> wrote:
> > On Thu, 10 Jan 2008 17:22:55 +0800
> > "Bryan Wu" <[EMAIL PROTECTED]> wrote:
> >
> > >
> > > At page 4-3 of ADSP-BF54x Blackfin(R) Processor Peripheral Hardware
> >
On Jan 10, 2008 7:57 PM, Pierre Ossman <[EMAIL PROTECTED]> wrote:
> On Thu, 10 Jan 2008 17:22:55 +0800
> "Bryan Wu" <[EMAIL PROTECTED]> wrote:
>
> >
> > At page 4-3 of ADSP-BF54x Blackfin(R) Processor Peripheral Hardware
> > Reference, there is a table which guide us the SDH controller does not
>
On Thu, 10 Jan 2008 17:22:55 +0800
"Bryan Wu" <[EMAIL PROTECTED]> wrote:
>
> At page 4-3 of ADSP-BF54x Blackfin(R) Processor Peripheral Hardware
> Reference, there is a table which guide us the SDH controller does not
> support 4-bit mode MMC card. Please found the table picture in the
>
On Thu, 10 Jan 2008 00:45:27 +0800
"Bryan Wu" <[EMAIL PROTECTED]> wrote:
>
> Actually, Blackfin BF54x on-chip SDIO host controller is supposed to
> support 1-bit and 4-bit MMC or SD. But in the real platform, when MMC
> works at 4-bit mode there will be a FIFO underrun error
>
On Thu, 10 Jan 2008 00:45:27 +0800
Bryan Wu [EMAIL PROTECTED] wrote:
Actually, Blackfin BF54x on-chip SDIO host controller is supposed to
support 1-bit and 4-bit MMC or SD. But in the real platform, when MMC
works at 4-bit mode there will be a FIFO underrun error
On Thu, 10 Jan 2008 17:22:55 +0800
Bryan Wu [EMAIL PROTECTED] wrote:
At page 4-3 of ADSP-BF54x Blackfin(R) Processor Peripheral Hardware
Reference, there is a table which guide us the SDH controller does not
support 4-bit mode MMC card. Please found the table picture in the
attachment or
On Jan 10, 2008 7:57 PM, Pierre Ossman [EMAIL PROTECTED] wrote:
On Thu, 10 Jan 2008 17:22:55 +0800
Bryan Wu [EMAIL PROTECTED] wrote:
At page 4-3 of ADSP-BF54x Blackfin(R) Processor Peripheral Hardware
Reference, there is a table which guide us the SDH controller does not
support 4-bit
On Jan 11, 2008 1:17 AM, Bryan Wu [EMAIL PROTECTED] wrote:
On Jan 10, 2008 7:57 PM, Pierre Ossman [EMAIL PROTECTED] wrote:
On Thu, 10 Jan 2008 17:22:55 +0800
Bryan Wu [EMAIL PROTECTED] wrote:
At page 4-3 of ADSP-BF54x Blackfin(R) Processor Peripheral Hardware
Reference, there is a
On Jan 9, 2008 3:23 PM, Pierre Ossman <[EMAIL PROTECTED]> wrote:
> On Wed, 9 Jan 2008 11:21:40 +0800
> "Cai, Cliff" <[EMAIL PROTECTED]> wrote:
>
> >
> > Hi,all
> >
> > I'd like to say something about this issue.
> > Currently,the blackfin on chip SD host ONLY support 1-bit MMC while
> > support
On Jan 9, 2008 3:23 PM, Pierre Ossman [EMAIL PROTECTED] wrote:
On Wed, 9 Jan 2008 11:21:40 +0800
Cai, Cliff [EMAIL PROTECTED] wrote:
Hi,all
I'd like to say something about this issue.
Currently,the blackfin on chip SD host ONLY support 1-bit MMC while
support 1-bit/4-bit SD/SDIO.
On Wed, 9 Jan 2008 11:21:40 +0800
"Cai, Cliff" <[EMAIL PROTECTED]> wrote:
>
> Hi,all
>
> I'd like to say something about this issue.
> Currently,the blackfin on chip SD host ONLY support 1-bit MMC while
> support 1-bit/4-bit SD/SDIO.
> And we want our driver to support both 1-bit MMC and 4-bit
On Tue, 8 Jan 2008 16:44:08 -0500
"Mike Frysinger" <[EMAIL PROTECTED]> wrote:
> On Jan 8, 2008 3:49 PM, Pierre Ossman <[EMAIL PROTECTED]> wrote:
> > So, again, if you feel that there is a hardware difference between 4-bit
> > MMC and 4-bit SD then please elaborate as it is my understanding that
On Jan 9, 2008 2:29 AM, Mike Frysinger <[EMAIL PROTECTED]> wrote:
> The on-chip Blackfin MMC/SD/SDIO host controller has the ability to do 1-bit
> MMC, 1-bit/4-bit SD, and 1-bit/4-bit SDIO. Thus the current convention of
> MMC_CAP_4_BIT_DATA meaning "your host controller can do 1-bit or 4-bit for
]
Cc: Mike Frysinger; linux-kernel@vger.kernel.org
Subject: Re: [patch] split MMC_CAP_4_BIT_DATA
On Jan 9, 2008 4:49 AM, Pierre Ossman <[EMAIL PROTECTED]> wrote:
> On Tue, 8 Jan 2008 14:40:49 -0500
> Mike Frysinger <[EMAIL PROTECTED]> wrote:
>
> >
> > i dont understan
On Jan 9, 2008 4:49 AM, Pierre Ossman <[EMAIL PROTECTED]> wrote:
> On Tue, 8 Jan 2008 14:40:49 -0500
> Mike Frysinger <[EMAIL PROTECTED]> wrote:
>
> >
> > i dont understand what's confusing. the Blackfin on chip host controller
> > only
> > supports 1-bit MMC, but it supports 4-bit SD/SDIO.
On Jan 8, 2008 3:49 PM, Pierre Ossman <[EMAIL PROTECTED]> wrote:
> On Tue, 8 Jan 2008 14:40:49 -0500
> Mike Frysinger <[EMAIL PROTECTED]> wrote:
> > i dont understand what's confusing. the Blackfin on chip host controller
> > only
> > supports 1-bit MMC, but it supports 4-bit SD/SDIO. this is a
On Tue, 8 Jan 2008 14:40:49 -0500
Mike Frysinger <[EMAIL PROTECTED]> wrote:
>
> i dont understand what's confusing. the Blackfin on chip host controller
> only
> supports 1-bit MMC, but it supports 4-bit SD/SDIO. this is a fact. while it
> may be a stupid decision, it is what it is, and i
On Tuesday 08 January 2008 14:21:57 Pierre Ossman wrote:
> Mike Frysinger <[EMAIL PROTECTED]> wrote:
> > The on-chip Blackfin MMC/SD/SDIO host controller has the ability to do
> > 1-bit MMC, 1-bit/4-bit SD, and 1-bit/4-bit SDIO. Thus the current
> > convention of MMC_CAP_4_BIT_DATA meaning "your
On Tue, 8 Jan 2008 13:29:39 -0500
Mike Frysinger <[EMAIL PROTECTED]> wrote:
> The on-chip Blackfin MMC/SD/SDIO host controller has the ability to do 1-bit
> MMC, 1-bit/4-bit SD, and 1-bit/4-bit SDIO. Thus the current convention of
> MMC_CAP_4_BIT_DATA meaning "your host controller can do 1-bit
The on-chip Blackfin MMC/SD/SDIO host controller has the ability to do 1-bit
MMC, 1-bit/4-bit SD, and 1-bit/4-bit SDIO. Thus the current convention of
MMC_CAP_4_BIT_DATA meaning "your host controller can do 1-bit or 4-bit for all
modes" is insufficient for our needs. The attached patch splits
The on-chip Blackfin MMC/SD/SDIO host controller has the ability to do 1-bit
MMC, 1-bit/4-bit SD, and 1-bit/4-bit SDIO. Thus the current convention of
MMC_CAP_4_BIT_DATA meaning your host controller can do 1-bit or 4-bit for all
modes is insufficient for our needs. The attached patch splits
On Tue, 8 Jan 2008 13:29:39 -0500
Mike Frysinger [EMAIL PROTECTED] wrote:
The on-chip Blackfin MMC/SD/SDIO host controller has the ability to do 1-bit
MMC, 1-bit/4-bit SD, and 1-bit/4-bit SDIO. Thus the current convention of
MMC_CAP_4_BIT_DATA meaning your host controller can do 1-bit or
On Tuesday 08 January 2008 14:21:57 Pierre Ossman wrote:
Mike Frysinger [EMAIL PROTECTED] wrote:
The on-chip Blackfin MMC/SD/SDIO host controller has the ability to do
1-bit MMC, 1-bit/4-bit SD, and 1-bit/4-bit SDIO. Thus the current
convention of MMC_CAP_4_BIT_DATA meaning your host
On Tue, 8 Jan 2008 14:40:49 -0500
Mike Frysinger [EMAIL PROTECTED] wrote:
i dont understand what's confusing. the Blackfin on chip host controller
only
supports 1-bit MMC, but it supports 4-bit SD/SDIO. this is a fact. while it
may be a stupid decision, it is what it is, and i need
On Jan 8, 2008 3:49 PM, Pierre Ossman [EMAIL PROTECTED] wrote:
On Tue, 8 Jan 2008 14:40:49 -0500
Mike Frysinger [EMAIL PROTECTED] wrote:
i dont understand what's confusing. the Blackfin on chip host controller
only
supports 1-bit MMC, but it supports 4-bit SD/SDIO. this is a fact.
On Jan 9, 2008 4:49 AM, Pierre Ossman [EMAIL PROTECTED] wrote:
On Tue, 8 Jan 2008 14:40:49 -0500
Mike Frysinger [EMAIL PROTECTED] wrote:
i dont understand what's confusing. the Blackfin on chip host controller
only
supports 1-bit MMC, but it supports 4-bit SD/SDIO. this is a fact.
]
Cc: Mike Frysinger; linux-kernel@vger.kernel.org
Subject: Re: [patch] split MMC_CAP_4_BIT_DATA
On Jan 9, 2008 4:49 AM, Pierre Ossman [EMAIL PROTECTED] wrote:
On Tue, 8 Jan 2008 14:40:49 -0500
Mike Frysinger [EMAIL PROTECTED] wrote:
i dont understand what's confusing. the Blackfin on chip
On Jan 9, 2008 2:29 AM, Mike Frysinger [EMAIL PROTECTED] wrote:
The on-chip Blackfin MMC/SD/SDIO host controller has the ability to do 1-bit
MMC, 1-bit/4-bit SD, and 1-bit/4-bit SDIO. Thus the current convention of
MMC_CAP_4_BIT_DATA meaning your host controller can do 1-bit or 4-bit for all
On Wed, 9 Jan 2008 11:21:40 +0800
Cai, Cliff [EMAIL PROTECTED] wrote:
Hi,all
I'd like to say something about this issue.
Currently,the blackfin on chip SD host ONLY support 1-bit MMC while
support 1-bit/4-bit SD/SDIO.
And we want our driver to support both 1-bit MMC and 4-bit
On Tue, 8 Jan 2008 16:44:08 -0500
Mike Frysinger [EMAIL PROTECTED] wrote:
On Jan 8, 2008 3:49 PM, Pierre Ossman [EMAIL PROTECTED] wrote:
So, again, if you feel that there is a hardware difference between 4-bit
MMC and 4-bit SD then please elaborate as it is my understanding that they
are
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