On Fri, Jun 10, 2011 at 12:28 PM, Ohad Ben-Cohen wrote:
> Hi Zhangfei,
>
> On Fri, Jun 10, 2011 at 5:02 AM, zhangfei gao wrote:
>> Here is answer got from the sd8686 maintainer.
>>
>> For 8686, the SDIO state machine can only handle init sequence (CMD5,
>> 5, 3, 7) from host once. If host sends a
fine after several power cycles.
Patches here: http://dev.laptop.org/~dsd/20110610/
The most relevant ones for this discussion are 6 and 7.
What next?
Daniel
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Hi all,
We are using a Freescale i.MX233 and are running on mainline Linux.
A wifi chip company (Redpine Signals) is doing a port of their sdio driver for
their Wifi module for our platform. But they are running into problems with the
sdio.
We have tested the mxs-mmc port using normal sd card wh
The patch extends card_detect and write_protect support to get mx5
family and more scenarios supported. The changes include:
* Turn platform_data from optional to mandatory
* Add cd_types and wp_types into platform_data to cover more use
cases
* Remove the use of flag ESDHC_FLAG_GPIO_FOR_CD
The use of flag ESDHC_FLAG_GPIO_FOR_CD_WP is all CD related. It does
not necessarily need to bother WP in the flag name.
Signed-off-by: Shawn Guo
---
drivers/mmc/host/sdhci-esdhc-imx.c |8
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/mmc/host/sdhci-esdhc-i
The function esdhc_readl_le intends to clear bit SDHCI_CARD_PRESENT,
when the card detect gpio tells there is no card. But it does not
clear the bit actually. The patch gives a fix on that.
Signed-off-by: Shawn Guo
---
drivers/mmc/host/sdhci-esdhc-imx.c |2 +-
1 files changed, 1 insertions
The issue was initially found by Eric Benard as below.
http://permalink.gmane.org/gmane.linux.ports.arm.kernel/108031
Not sure about other SDHCI based controller, but on Freescale eSDHC,
the SDHCI_INT_CARD_INSERT bits will be immediately set again when it
gets cleared, if a card is inserted. The
The card-present polling within sdhci based driver is very expensive
in terms of the impact to system performance. We observe a few
system performance issues from Freescale and Linaro on mx5 platforms,
which have been proved card polling related.
The patch set extends the current sdhci-esdhc-imx
