These two patches improve power-on management for my 'libertas'
wifi card.
On my board the card shares a regulator with a bluetooth device, so
turning off the regulator may not powercycle the card. To get it to a
clean state it is necessary to hold the reset line down while enabling
the regulator
If the regulator supplying an SDIO device is shared
with another device, the turning the regulator 'on' and 'off'
will not actually cycle power and so will not reset
the device.
This is particularly a problem for some wi2si wireless modules which
have a BT module on chip and can share power lines.
mmc_sdio_power_restore calls
mmc_send_if_cond(host, host->ocr_avail);
ret = mmc_send_io_op_cond(host, 0, NULL);
between mmc_go_idle() and mmc_sdio_init_card().
mmc_sdio_resume needs to as well, else my libertas sdio wifi
device doesn't resume properly from suspend.
Signed-off-by
omap_hsmmc currently duplicates some work that can be done for
it by common code, and consequently does not benefit from extra
functionality in that common code.
In particular, mmc_of_parse and the slot-gpio library are not used.
This set of patches allows omap_hsmmc to use that common
functional
The only function of these 'prepare' and 'complete' is to
disable the 'card detect' irq during suspend.
The commit which added this,
commit a48ce884d5819d5df2cf1139ab3c43f8e9e419b3
mmc: omap_hsmmc: Introduce omap_hsmmc_prepare/complete
justified it by the need to avoid the registration of new
This ensures that all standard options are available to hsmmc,
In particular, I need cap-power-off-card.
Signed-off-by: NeilBrown
---
drivers/mmc/host/omap_hsmmc.c | 33 -
1 file changed, 8 insertions(+), 25 deletions(-)
diff --git a/drivers/mmc/host/omap_hsmmc
Using the common code removes some code duplication, and
makes it easier to switch to using mmc_of_parse() which
will remove more duplication.
As hsmmc has a slightly different interrupt service routine
for card-detect, enhance slot-gpio to allow an alternate
routine to be provided.
Signed-off-by
This patch resurrects an old never-finished driver for Toshiba PCI SD
controllers found in some older Toshiba laptops (such as Portege R100):
02:0d.0 System peripheral [0880]: Toshiba America Info Systems SD TypA
Controller [1179:0805] (rev 05)
The code is fixed, cleaned up and successfully test
On 14-11-05 09:01 PM, Stephen Warren wrote:
On 11/05/2014 12:00 AM, Scott Branden wrote:
On 14-11-04 08:59 PM, Stephen Warren wrote:
On 10/30/2014 12:36 AM, Scott Branden wrote:
Add a verify option to driver to print out an error message if a
potential back to back write could cause a clock do
On 14-11-05 08:50 PM, Stephen Warren wrote:
On 11/05/2014 12:02 AM, Scott Branden wrote:
On 14-11-04 09:00 PM, Stephen Warren wrote:
On 10/30/2014 12:36 AM, Scott Branden wrote:
SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 is missing and needed for this
controller.
This seems fine, although any explan
On 14-11-05 08:48 PM, Stephen Warren wrote:
On 11/04/2014 11:55 PM, Scott Branden wrote:
On 14-11-04 08:57 PM, Stephen Warren wrote:
On 10/30/2014 12:36 AM, Scott Branden wrote:
The bcm2835 has clock domain issues when back to back writes to certain
registers are written. The existing driver
On Fri, Nov 7, 2014 at 9:35 AM, vadivelan mani
wrote:
> Dear all,
> I'm facing this unique problem during emmc write operation. I'm using a
> Toshiba emmc device on Sabre AI board and linux kernel version 3.0.35.
Please try 3.18-rc3.
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Dear all,
I'm facing this unique problem during emmc write operation. I'm using a
Toshiba emmc device on Sabre AI board and linux kernel version 3.0.35.
The write operation is successful when i disable multi-block read/write.
But when multi block read/write is enabled, the writes fail for dat
On 01/11/14 09:23, Chanho Min wrote:
>>> So change the operating mode and to lower the clock.
>>
>> I meant something different.
>>
>> With your patch I find that __mmc_switch() -> send_status() fails.
>>
>> So I suggest something like this:
>>
>> diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/c
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