[U-Boot] [PATCH v2 3/5] spi: ti_qspi: Add delay for successful bulk erase.

[Sourav Poddar]

On Monday 07 April 2014 10:51 PM, Tom Rini wrote:
> On Thu, Apr 03, 2014 at 08:45:42PM +0530, Jagan Teki wrote:
>> On Thu, Apr 3, 2014 at 5:22 PM, Tom Rini<trini at ti.com>  wrote:
>>> From: "Poddar, Sourav"<sourav.poddar at ti.com>
>>>
>>> Bulk erase is not happening properly on dra7 due to erase timing constraints,
>>> add a delay so that erase timing constraints are properly met.
>>>
>>> Signed-off-by: Sourav Poddar<sourav.poddar at ti.com>
>>> Tested-by: Yebio Mesfin<ymesfin at ti.com>
>>> ---
>>>   drivers/spi/ti_qspi.c |    3 +++
>>>   1 file changed, 3 insertions(+)
>>>
>>> diff --git a/drivers/spi/ti_qspi.c b/drivers/spi/ti_qspi.c
>>> index dfa5d0c..c5d2245 100644
>>> --- a/drivers/spi/ti_qspi.c
>>> +++ b/drivers/spi/ti_qspi.c
>>> @@ -314,6 +314,9 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout,
>>>                          qslave->cmd |= QSPI_RD_SNGL;
>>>                          debug("rx cmd %08x dc %08x\n",
>>>                                qslave->cmd, qslave->dc);
>>> +                       #ifdef CONFIG_DRA7XX
>>> +                               udelay(500);
>>> +                       #endif
>>>                          writel(qslave->cmd,&qslave->base->cmd);
>>>                          status = readl(&qslave->base->status);
>>>                          timeout = QSPI_TIMEOUT;
>> Can't we fix this? discussed the same in previous version thread as well.
> Sorry, I kicked out v2 before checking my mbox again.  Sourav, do you
> have some time to look at this again?
>
I can look at this sometime this week, but I am not sure if there is 
anything which
can be done. I had tried few stuffs to get rid of this in the past, but 
those attempts failed.
Still, I will check if there is anything more that can be done to get 
rid of this.