[U-Boot] Controlling write protect pin on SPI flash

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* [U-Boot] Controlling write protect pin on SPI flash
@ 2014-12-11 11:12 Andy Pont
  0 siblings, 0 replies; 3+ messages in thread
From: Andy Pont @ 2014-12-11 11:12 UTC (permalink / raw)
  To: u-boot

Hello,

Is there, or is anyone working on, code for controlling the write protect
pin of SPI flash devices using a GPIO?  In effect an "sf protect <on|off>"
command?  I have had a look in 2014.07 which is on the platform we are using
but can't see anything.

Thanks,

Andy.

^ permalink raw reply	[flat|nested] 3+ messages in thread

[parent not found: <54897c17.8667c20a.3e09.ffff9b83SMTPIN_ADDED_BROKEN@mx.google.com>]

* [U-Boot] Controlling write protect pin on SPI flash
       [not found] <54897c17.8667c20a.3e09.ffff9b83SMTPIN_ADDED_BROKEN@mx.google.com>
@ 2014-12-12  5:51 ` Simon Glass
  0 siblings, 0 replies; 3+ messages in thread
From: Simon Glass @ 2014-12-12  5:51 UTC (permalink / raw)
  To: u-boot

Hi,

On Dec 11, 2014 4:12 AM, "Andy Pont" <andy.pont@sdcsystems.com> wrote:
>
> Hello,
>
> Is there, or is anyone working on, code for controlling the write protect
> pin of SPI flash devices using a GPIO?  In effect an "sf protect <on|off>"
> command?  I have had a look in 2014.07 which is on the platform we are
using
> but can't see anything.
>
> Thanks,
>
> Andy.

There is an 'sf status' command in the Chromium tree.

Regards,
Simon

^ permalink raw reply	[flat|nested] 3+ messages in thread

[parent not found: <54897c1a.520db50a.1314.0e9fSMTPIN_ADDED_BROKEN@mx.google.com>]

* [U-Boot] Controlling write protect pin on SPI flash
       [not found] <54897c1a.520db50a.1314.0e9fSMTPIN_ADDED_BROKEN@mx.google.com>
@ 2014-12-12  6:14 ` Jagan Teki
  0 siblings, 0 replies; 3+ messages in thread
From: Jagan Teki @ 2014-12-12  6:14 UTC (permalink / raw)
  To: u-boot

On 11 December 2014 at 16:42, Andy Pont <andy.pont@sdcsystems.com> wrote:
> Hello,
>
> Is there, or is anyone working on, code for controlling the write protect
> pin of SPI flash devices using a GPIO?  In effect an "sf protect <on|off>"
> command?  I have had a look in 2014.07 which is on the platform we are using
> but can't see anything.

Just try this - CONFIG_SYS_SPI_ST_ENABLE_WP_PIN

Heiko has recently added this for hardware protection W#/Vpp signal
I don't know will this helps your requirement of not.

thanks!
-- 
Jagan.

^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2014-12-12  6:14 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2014-12-11 11:12 [U-Boot] Controlling write protect pin on SPI flash Andy Pont
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2014-12-12  5:51 ` Simon Glass
     [not found] <54897c1a.520db50a.1314.0e9fSMTPIN_ADDED_BROKEN@mx.google.com>
2014-12-12  6:14 ` Jagan Teki

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