* socfpga: mmc problems
@ 2013-07-03 15:01 Jack Mitchell
2013-07-03 15:09 ` Dinh Nguyen
0 siblings, 1 reply; 5+ messages in thread
From: Jack Mitchell @ 2013-07-03 15:01 UTC (permalink / raw)
To: linux-arm-kernel
Having received one of the new Arrow SoCkit boards at a recent training
day I set about seeing how far mainline was in successfully booting this
board.
As I wanted to boot from mmc, I first checked out linux-next [1] in
order to get the newly merged mmc driver, I then applied the device-tree
enablement series [2] on top before finally attempting to boot. I then
found that the standard socfpga_defconfig didn't enable the MMC drivers,
which I also did (should this be part of the socfpga_defconfig...?).
However, the boot hangs at:
Synopsys Designware Multimedia Card Interface Driver
dwmmc_socfpga ff704000.dwmmc0: Using internal DMA controller.
dwmmc_socfpga ff704000.dwmmc0: DW MMC controller at irq 171, 32 bit host
data width, 1024 deep fifo
To fix this I checked out the diff between the Altera vendor mmc driver
and the mainline driver and found that if I added this small change:
if (of_property_read_u32(dev->of_node, "pwr-en", &pwr_en)) {
dev_info(dev, "couldn't determine pwr-en, assuming pwr-en = 0\n");
pwr_en = 0;
}
/* Set PWREN bit */
mci_writel(host, PWREN, pwr_en);
In the dw_mci_socfpga_priv_init function, the board would boot.
Synopsys Designware Multimedia Card Interface Driver
dwmmc_socfpga ff704000.dwmmc0: couldn't determine pwr-en, assuming
pwr-en = 0
dwmmc_socfpga ff704000.dwmmc0: Using internal DMA controller.
dwmmc_socfpga ff704000.dwmmc0: DW MMC controller at irq 171, 32 bit host
data width, 1024 deep fifo
mmc_host mmc0: Bus speed (slot 0) = 100000000Hz (slot req 400000Hz,
actual 400000HZ div = 125)
dwmmc_socfpga ff704000.dwmmc0: 1 slots initialized
dwmmc_socfpga ff704000.dwmmc0: Version ID is 240a
.....
.....
.....
Has this been overlooked, or are there some other changes elsewhere that
I haven't yet come across which addresses this?
Cheers,
[1] fa1383200d289afdff2f5678eb89483daa537465
[2] http://comments.gmane.org/gmane.linux.ports.arm.kernel/243529
--
Jack Mitchell (jack at embed.me.uk)
Embedded Systems Engineer
http://www.embed.me.uk
--
^ permalink raw reply [flat|nested] 5+ messages in thread
* socfpga: mmc problems
2013-07-03 15:01 socfpga: mmc problems Jack Mitchell
@ 2013-07-03 15:09 ` Dinh Nguyen
2013-07-04 8:31 ` Jack Mitchell
0 siblings, 1 reply; 5+ messages in thread
From: Dinh Nguyen @ 2013-07-03 15:09 UTC (permalink / raw)
To: linux-arm-kernel
Hi Jack,
On Wed, 2013-07-03 at 16:01 +0100, Jack Mitchell wrote:
> Having received one of the new Arrow SoCkit boards at a recent training
> day I set about seeing how far mainline was in successfully booting this
> board.
>
> As I wanted to boot from mmc, I first checked out linux-next [1] in
> order to get the newly merged mmc driver, I then applied the device-tree
> enablement series [2] on top before finally attempting to boot. I then
> found that the standard socfpga_defconfig didn't enable the MMC drivers,
> which I also did (should this be part of the socfpga_defconfig...?).
I was going to update this when I enable ethernet as well to avoid less
churn on the defconfig.
>
> However, the boot hangs at:
>
> Synopsys Designware Multimedia Card Interface Driver
> dwmmc_socfpga ff704000.dwmmc0: Using internal DMA controller.
> dwmmc_socfpga ff704000.dwmmc0: DW MMC controller at irq 171, 32 bit host
> data width, 1024 deep fifo
>
> To fix this I checked out the diff between the Altera vendor mmc driver
> and the mainline driver and found that if I added this small change:
>
>
> if (of_property_read_u32(dev->of_node, "pwr-en", &pwr_en)) {
> dev_info(dev, "couldn't determine pwr-en, assuming pwr-en = 0\n");
> pwr_en = 0;
> }
>
> /* Set PWREN bit */
> mci_writel(host, PWREN, pwr_en);
I tested this on my devkit, which was not made by Arrow, but is _almost_
the same. I'll try to see if I can get my hands on an Arrow board to
reproduce.
>
> In the dw_mci_socfpga_priv_init function, the board would boot.
>
> Synopsys Designware Multimedia Card Interface Driver
> dwmmc_socfpga ff704000.dwmmc0: couldn't determine pwr-en, assuming
> pwr-en = 0
> dwmmc_socfpga ff704000.dwmmc0: Using internal DMA controller.
> dwmmc_socfpga ff704000.dwmmc0: DW MMC controller at irq 171, 32 bit host
> data width, 1024 deep fifo
> mmc_host mmc0: Bus speed (slot 0) = 100000000Hz (slot req 400000Hz,
> actual 400000HZ div = 125)
> dwmmc_socfpga ff704000.dwmmc0: 1 slots initialized
> dwmmc_socfpga ff704000.dwmmc0: Version ID is 240a
> .....
> .....
> .....
>
>
> Has this been overlooked, or are there some other changes elsewhere that
> I haven't yet come across which addresses this?
I'm not aware of any other changes.
Dinh
>
> Cheers,
>
> [1] fa1383200d289afdff2f5678eb89483daa537465
> [2] http://comments.gmane.org/gmane.linux.ports.arm.kernel/243529
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* socfpga: mmc problems
2013-07-03 15:09 ` Dinh Nguyen
@ 2013-07-04 8:31 ` Jack Mitchell
2013-07-08 15:22 ` Dinh Nguyen
0 siblings, 1 reply; 5+ messages in thread
From: Jack Mitchell @ 2013-07-04 8:31 UTC (permalink / raw)
To: linux-arm-kernel
Morning Dinh,
On 03/07/13 16:09, Dinh Nguyen wrote:
> Hi Jack,
>
> On Wed, 2013-07-03 at 16:01 +0100, Jack Mitchell wrote:
>> Having received one of the new Arrow SoCkit boards at a recent training
>> day I set about seeing how far mainline was in successfully booting this
>> board.
>>
>> As I wanted to boot from mmc, I first checked out linux-next [1] in
>> order to get the newly merged mmc driver, I then applied the device-tree
>> enablement series [2] on top before finally attempting to boot. I then
>> found that the standard socfpga_defconfig didn't enable the MMC drivers,
>> which I also did (should this be part of the socfpga_defconfig...?).
>
> I was going to update this when I enable ethernet as well to avoid less
> churn on the defconfig.
That's great!
>
>>
>> However, the boot hangs at:
>>
>> Synopsys Designware Multimedia Card Interface Driver
>> dwmmc_socfpga ff704000.dwmmc0: Using internal DMA controller.
>> dwmmc_socfpga ff704000.dwmmc0: DW MMC controller at irq 171, 32 bit host
>> data width, 1024 deep fifo
>>
>> To fix this I checked out the diff between the Altera vendor mmc driver
>> and the mainline driver and found that if I added this small change:
>>
>>
>> if (of_property_read_u32(dev->of_node, "pwr-en", &pwr_en)) {
>> dev_info(dev, "couldn't determine pwr-en, assuming pwr-en = 0\n");
>> pwr_en = 0;
>> }
>>
>> /* Set PWREN bit */
>> mci_writel(host, PWREN, pwr_en);
>
> I tested this on my devkit, which was not made by Arrow, but is _almost_
> the same. I'll try to see if I can get my hands on an Arrow board to
> reproduce.
Now, I think I made a _slight_ mistake, in that I accidentally copied
the Altera vendor kernel onto the sdcard instead of the linux-next
kernel. Re-testing this morning with a fresh mind, I checked the config
again and now I find the Arrow board still won't boot from MMC, even
with the above change, with the code hanging at the same place.
I know you don't have an Arrow board, but if you have a tree which I
could pull from with your amalgamated changes; that would rule out me
missing any patches and it actually being a board problem. I can't seem
to see if the V8 device tree patches were pulled into anyones tree,
otherwise I would just wait till they appeared in 3.11-rc1...?
Sorry for the confusion!
>
>>
>> In the dw_mci_socfpga_priv_init function, the board would boot.
>>
>> Synopsys Designware Multimedia Card Interface Driver
>> dwmmc_socfpga ff704000.dwmmc0: couldn't determine pwr-en, assuming
>> pwr-en = 0
>> dwmmc_socfpga ff704000.dwmmc0: Using internal DMA controller.
>> dwmmc_socfpga ff704000.dwmmc0: DW MMC controller at irq 171, 32 bit host
>> data width, 1024 deep fifo
>> mmc_host mmc0: Bus speed (slot 0) = 100000000Hz (slot req 400000Hz,
>> actual 400000HZ div = 125)
>> dwmmc_socfpga ff704000.dwmmc0: 1 slots initialized
>> dwmmc_socfpga ff704000.dwmmc0: Version ID is 240a
>> .....
>> .....
>> .....
>>
>>
>> Has this been overlooked, or are there some other changes elsewhere that
>> I haven't yet come across which addresses this?
>
> I'm not aware of any other changes.
>
> Dinh
>>
>> Cheers,
>>
>> [1] fa1383200d289afdff2f5678eb89483daa537465
>> [2] http://comments.gmane.org/gmane.linux.ports.arm.kernel/243529
>>
>
>
>
--
Jack Mitchell (jack at embed.me.uk)
Embedded Systems Engineer
http://www.embed.me.uk
--
^ permalink raw reply [flat|nested] 5+ messages in thread
* socfpga: mmc problems
2013-07-04 8:31 ` Jack Mitchell
@ 2013-07-08 15:22 ` Dinh Nguyen
2013-07-08 16:00 ` Jack Mitchell
0 siblings, 1 reply; 5+ messages in thread
From: Dinh Nguyen @ 2013-07-08 15:22 UTC (permalink / raw)
To: linux-arm-kernel
Hi Jack,
On Thu, 2013-07-04 at 09:31 +0100, Jack Mitchell wrote:
> Morning Dinh,
>
> On 03/07/13 16:09, Dinh Nguyen wrote:
> > Hi Jack,
> >
> > On Wed, 2013-07-03 at 16:01 +0100, Jack Mitchell wrote:
> >> Having received one of the new Arrow SoCkit boards at a recent training
> >> day I set about seeing how far mainline was in successfully booting this
> >> board.
> >>
> >> As I wanted to boot from mmc, I first checked out linux-next [1] in
> >> order to get the newly merged mmc driver, I then applied the device-tree
> >> enablement series [2] on top before finally attempting to boot. I then
> >> found that the standard socfpga_defconfig didn't enable the MMC drivers,
> >> which I also did (should this be part of the socfpga_defconfig...?).
> >
> > I was going to update this when I enable ethernet as well to avoid less
> > churn on the defconfig.
>
> That's great!
>
> >
> >>
> >> However, the boot hangs at:
> >>
> >> Synopsys Designware Multimedia Card Interface Driver
> >> dwmmc_socfpga ff704000.dwmmc0: Using internal DMA controller.
> >> dwmmc_socfpga ff704000.dwmmc0: DW MMC controller at irq 171, 32 bit host
> >> data width, 1024 deep fifo
> >>
> >> To fix this I checked out the diff between the Altera vendor mmc driver
> >> and the mainline driver and found that if I added this small change:
> >>
> >>
> >> if (of_property_read_u32(dev->of_node, "pwr-en", &pwr_en)) {
> >> dev_info(dev, "couldn't determine pwr-en, assuming pwr-en = 0\n");
> >> pwr_en = 0;
> >> }
> >>
> >> /* Set PWREN bit */
> >> mci_writel(host, PWREN, pwr_en);
> >
> > I tested this on my devkit, which was not made by Arrow, but is _almost_
> > the same. I'll try to see if I can get my hands on an Arrow board to
> > reproduce.
>
> Now, I think I made a _slight_ mistake, in that I accidentally copied
> the Altera vendor kernel onto the sdcard instead of the linux-next
> kernel. Re-testing this morning with a fresh mind, I checked the config
> again and now I find the Arrow board still won't boot from MMC, even
> with the above change, with the code hanging at the same place.
>
> I know you don't have an Arrow board, but if you have a tree which I
> could pull from with your amalgamated changes; that would rule out me
> missing any patches and it actually being a board problem. I can't seem
> to see if the V8 device tree patches were pulled into anyones tree,
> otherwise I would just wait till they appeared in 3.11-rc1...?
Unfortunately, the device tree bindings for the SD/MMC did not make it
into the arm-soc tree for 3.11, only the sd/mmc platform driver. Will
try for 3.12.
I'm sure you have seen git.rocketboards.org?
Dinh
>
> Sorry for the confusion!
>
> >
> >>
> >> In the dw_mci_socfpga_priv_init function, the board would boot.
> >>
> >> Synopsys Designware Multimedia Card Interface Driver
> >> dwmmc_socfpga ff704000.dwmmc0: couldn't determine pwr-en, assuming
> >> pwr-en = 0
> >> dwmmc_socfpga ff704000.dwmmc0: Using internal DMA controller.
> >> dwmmc_socfpga ff704000.dwmmc0: DW MMC controller at irq 171, 32 bit host
> >> data width, 1024 deep fifo
> >> mmc_host mmc0: Bus speed (slot 0) = 100000000Hz (slot req 400000Hz,
> >> actual 400000HZ div = 125)
> >> dwmmc_socfpga ff704000.dwmmc0: 1 slots initialized
> >> dwmmc_socfpga ff704000.dwmmc0: Version ID is 240a
> >> .....
> >> .....
> >> .....
> >>
> >>
> >> Has this been overlooked, or are there some other changes elsewhere that
> >> I haven't yet come across which addresses this?
> >
> > I'm not aware of any other changes.
> >
> > Dinh
> >>
> >> Cheers,
> >>
> >> [1] fa1383200d289afdff2f5678eb89483daa537465
> >> [2] http://comments.gmane.org/gmane.linux.ports.arm.kernel/243529
> >>
> >
> >
> >
>
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* socfpga: mmc problems
2013-07-08 15:22 ` Dinh Nguyen
@ 2013-07-08 16:00 ` Jack Mitchell
0 siblings, 0 replies; 5+ messages in thread
From: Jack Mitchell @ 2013-07-08 16:00 UTC (permalink / raw)
To: linux-arm-kernel
Hi Dinh,
On 08/07/13 16:22, Dinh Nguyen wrote:
> Hi Jack,
>
> On Thu, 2013-07-04 at 09:31 +0100, Jack Mitchell wrote:
>> Morning Dinh,
>>
>> On 03/07/13 16:09, Dinh Nguyen wrote:
>>> Hi Jack,
>>>
>>> On Wed, 2013-07-03 at 16:01 +0100, Jack Mitchell wrote:
>>>> Having received one of the new Arrow SoCkit boards at a recent training
>>>> day I set about seeing how far mainline was in successfully booting this
>>>> board.
>>>>
>>>> As I wanted to boot from mmc, I first checked out linux-next [1] in
>>>> order to get the newly merged mmc driver, I then applied the device-tree
>>>> enablement series [2] on top before finally attempting to boot. I then
>>>> found that the standard socfpga_defconfig didn't enable the MMC drivers,
>>>> which I also did (should this be part of the socfpga_defconfig...?).
>>>
>>> I was going to update this when I enable ethernet as well to avoid less
>>> churn on the defconfig.
>>
>> That's great!
>>
>>>
>>>>
>>>> However, the boot hangs at:
>>>>
>>>> Synopsys Designware Multimedia Card Interface Driver
>>>> dwmmc_socfpga ff704000.dwmmc0: Using internal DMA controller.
>>>> dwmmc_socfpga ff704000.dwmmc0: DW MMC controller at irq 171, 32 bit host
>>>> data width, 1024 deep fifo
>>>>
>>>> To fix this I checked out the diff between the Altera vendor mmc driver
>>>> and the mainline driver and found that if I added this small change:
>>>>
>>>>
>>>> if (of_property_read_u32(dev->of_node, "pwr-en", &pwr_en)) {
>>>> dev_info(dev, "couldn't determine pwr-en, assuming pwr-en = 0\n");
>>>> pwr_en = 0;
>>>> }
>>>>
>>>> /* Set PWREN bit */
>>>> mci_writel(host, PWREN, pwr_en);
>>>
>>> I tested this on my devkit, which was not made by Arrow, but is _almost_
>>> the same. I'll try to see if I can get my hands on an Arrow board to
>>> reproduce.
>>
>> Now, I think I made a _slight_ mistake, in that I accidentally copied
>> the Altera vendor kernel onto the sdcard instead of the linux-next
>> kernel. Re-testing this morning with a fresh mind, I checked the config
>> again and now I find the Arrow board still won't boot from MMC, even
>> with the above change, with the code hanging at the same place.
>>
>> I know you don't have an Arrow board, but if you have a tree which I
>> could pull from with your amalgamated changes; that would rule out me
>> missing any patches and it actually being a board problem. I can't seem
>> to see if the V8 device tree patches were pulled into anyones tree,
>> otherwise I would just wait till they appeared in 3.11-rc1...?
>
> Unfortunately, the device tree bindings for the SD/MMC did not make it
> into the arm-soc tree for 3.11, only the sd/mmc platform driver. Will
> try for 3.12.
>
> I'm sure you have seen git.rocketboards.org?
Yes, I have the 3.9 rocketboards kernel compiling and working so I'm not
stuck; just interested in keeping up to date with how mainline is
progressing and helping with testing (and nit picking!).
Cheers,
Jack.
>
> Dinh
>>
>> Sorry for the confusion!
>>
>>>
>>>>
>>>> In the dw_mci_socfpga_priv_init function, the board would boot.
>>>>
>>>> Synopsys Designware Multimedia Card Interface Driver
>>>> dwmmc_socfpga ff704000.dwmmc0: couldn't determine pwr-en, assuming
>>>> pwr-en = 0
>>>> dwmmc_socfpga ff704000.dwmmc0: Using internal DMA controller.
>>>> dwmmc_socfpga ff704000.dwmmc0: DW MMC controller at irq 171, 32 bit host
>>>> data width, 1024 deep fifo
>>>> mmc_host mmc0: Bus speed (slot 0) = 100000000Hz (slot req 400000Hz,
>>>> actual 400000HZ div = 125)
>>>> dwmmc_socfpga ff704000.dwmmc0: 1 slots initialized
>>>> dwmmc_socfpga ff704000.dwmmc0: Version ID is 240a
>>>> .....
>>>> .....
>>>> .....
>>>>
>>>>
>>>> Has this been overlooked, or are there some other changes elsewhere that
>>>> I haven't yet come across which addresses this?
>>>
>>> I'm not aware of any other changes.
>>>
>>> Dinh
>>>>
>>>> Cheers,
>>>>
>>>> [1] fa1383200d289afdff2f5678eb89483daa537465
>>>> [2] http://comments.gmane.org/gmane.linux.ports.arm.kernel/243529
>>>>
>>>
>>>
>>>
>>
>>
>
>
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>
--
Jack Mitchell (jack at embed.me.uk)
Embedded Systems Engineer
http://www.embed.me.uk
--
^ permalink raw reply [flat|nested] 5+ messages in thread
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2013-07-03 15:01 socfpga: mmc problems Jack Mitchell
2013-07-03 15:09 ` Dinh Nguyen
2013-07-04 8:31 ` Jack Mitchell
2013-07-08 15:22 ` Dinh Nguyen
2013-07-08 16:00 ` Jack Mitchell
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