[U-Boot-Users] [PATCH] DataFlash AT45DB021 support

[U-Boot-Users] [PATCH] DataFlash AT45DB021 support

[Sergey Lapin]

Some boards based on AT91SAM926X-EK use smaller DF chips to keep
bootstrap, u-boot and its environment, using NAND or other external
storage for kernel and rootfs. This patch adds support for
small 1024x263 chip.

Signed-off-by: Sergey Lapin <slapin@ossfans.org>
---
 drivers/mtd/dataflash.c |   15 ++++++++++++++-
 include/dataflash.h     |    1 +
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/dataflash.c b/drivers/mtd/dataflash.c
index 8247aa0..92accc0 100644
--- a/drivers/mtd/dataflash.c
+++ b/drivers/mtd/dataflash.c
@@ -52,8 +52,18 @@ int AT91F_DataflashInit (void)
 		dataflash_info[i].Device.pages_number = 0;
 		dfcode = AT91F_DataflashProbe (cs[i].cs,
 				&dataflash_info[i].Desc);
-
 		switch (dfcode) {
+		case AT45DB021:
+			dataflash_info[i].Device.pages_number = 1024;
+			dataflash_info[i].Device.pages_size = 263;
+			dataflash_info[i].Device.page_offset = 9;
+			dataflash_info[i].Device.byte_mask = 0x300;
+			dataflash_info[i].Device.cs = cs[i].cs;
+			dataflash_info[i].Desc.DataFlash_state = IDLE;
+			dataflash_info[i].logical_address = cs[i].addr;
+			dataflash_info[i].id = dfcode;
+			found[i] += dfcode;;
+			break;
 		case AT45DB161:
 			dataflash_info[i].Device.pages_number = 4096;
 			dataflash_info[i].Device.pages_size = 528;
@@ -178,6 +188,9 @@ void dataflash_print_info (void)
 		if (dataflash_info[i].id != 0) {
 			printf("DataFlash:");
 			switch (dataflash_info[i].id) {
+			case AT45DB021:
+				printf("AT45DB021\n");
+				break;
 			case AT45DB161:
 				printf("AT45DB161\n");
 				break;
diff --git a/include/dataflash.h b/include/dataflash.h
index f20c738..11e5188 100644
--- a/include/dataflash.h
+++ b/include/dataflash.h
@@ -137,6 +137,7 @@ struct dataflash_addr {
 /*-------------------------------------------------------------------------------------------------*/
 
 #define AT45DB161	0x2c
+#define AT45DB021	0x14
 #define AT45DB321	0x34
 #define AT45DB642	0x3c
 #define AT45DB128	0x10
-- 
1.5.4.1

[U-Boot-Users] [PATCH] DataFlash AT45DB021 support

[Sergey Lapin]

Hi, all!
On Tue, May 20, 2008 at 10:51 PM, Sergey Lapin <slapin@ossfans.org> wrote:
> Some boards based on AT91SAM926X-EK use smaller DF chips to keep
> bootstrap, u-boot and its environment, using NAND or other external
> storage for kernel and rootfs. This patch adds support for
> small 1024x263 chip.
>
> Signed-off-by: Sergey Lapin <slapin@ossfans.org>
> ---
>  drivers/mtd/dataflash.c |   15 ++++++++++++++-
>  include/dataflash.h     |    1 +
>  2 files changed, 16 insertions(+), 2 deletions(-)
>

What about this patch?

[U-Boot-Users] [AT91] Re: [PATCH] DataFlash AT45DB021 support

[Sergey Lapin]

On Tue, May 20, 2008 at 10:51:59PM +0400, Sergey Lapin wrote:
> Some boards based on AT91SAM926X-EK use smaller DF chips to keep
> bootstrap, u-boot and its environment, using NAND or other external
> storage for kernel and rootfs. This patch adds support for
> small 1024x263 chip.
> 
> Signed-off-by: Sergey Lapin <slapin@ossfans.org>
> ---
>  drivers/mtd/dataflash.c |   15 ++++++++++++++-
>  include/dataflash.h     |    1 +
>  2 files changed, 16 insertions(+), 2 deletions(-)
> 

Is there any interest in this patch? I use it just fine with
my AT91SAM9260 custom boards.

[U-Boot-Users] [AT91] Re: [PATCH] DataFlash AT45DB021 support

[Matt Gessner]

I added code to handle the 011 chip, but I really didn't think anyone
would be interested in it.
If someone wants it, I can post it.

Wolfgang, are these simple patches of any interest to the general
community, when they're so trivial to add?

Regards,

Matt

On Mon, May 26, 2008 at 10:46 AM, Sergey Lapin <slapin@ossfans.org> wrote:
> On Tue, May 20, 2008 at 10:51:59PM +0400, Sergey Lapin wrote:
>> Some boards based on AT91SAM926X-EK use smaller DF chips to keep
>> bootstrap, u-boot and its environment, using NAND or other external
>> storage for kernel and rootfs. This patch adds support for
>> small 1024x263 chip.
>>
>> Signed-off-by: Sergey Lapin <slapin@ossfans.org>
>> ---
>>  drivers/mtd/dataflash.c |   15 ++++++++++++++-
>>  include/dataflash.h     |    1 +
>>  2 files changed, 16 insertions(+), 2 deletions(-)
>>
>
> Is there any interest in this patch? I use it just fine with
> my AT91SAM9260 custom boards.
>
>
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[U-Boot-Users] [AT91] Re: [PATCH] DataFlash AT45DB021 support

[Sergey Lapin]

On Mon, May 26, 2008 at 02:03:42PM -0400, Matt Gessner wrote:
Hi, all!
> I added code to handle the 011 chip, but I really didn't think anyone
> would be interested in it.
> If someone wants it, I can post it.
> 
> Wolfgang, are these simple patches of any interest to the general
> community, when they're so trivial to add?
> 
Wolfgang, could you please answer this?

Thanks a lot,
S.

[U-Boot-Users] [AT91] Re: [PATCH] DataFlash AT45DB021 support

[Wolfgang Denk]

In message <85a5c2010805261103q76d25903q3bfac3bc3ad0a4b4@mail.gmail.com> you wrote:
> I added code to handle the 011 chip, but I really didn't think anyone
> would be interested in it.

I think all such changes should get added to the public repository.

> If someone wants it, I can post it.

Please do.

> Wolfgang, are these simple patches of any interest to the general
> community, when they're so trivial to add?

Sorry, I really have no idea why these patches have not been picked
up yet by the AT91 custodian...

I think they should go in, but I don't have any such hardware so I
cannot test anything.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
"It is better to have tried and failed than to have  failed  to  try,
but the result's the same."                           - Mike Dennison

[U-Boot-Users] [AT91] Re: [PATCH] DataFlash AT45DB021 support

[Wolfgang Denk]

Dear Sergei,

in message <20080529060833.GA17528@fan.ossfans.org> you wrote:
>
> > Wolfgang, are these simple patches of any interest to the general
> > community, when they're so trivial to add?
> > 
> Wolfgang, could you please answer this?

Sorry, I really don't know. Please see my previous message - this
should be handled by the AT91 custodian. Please ping him directly.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Artificial Intelligence is no match for natural stupidity.

[U-Boot-Users] [AT91] Re: [PATCH] DataFlash AT45DB021 support

[Matt Gessner]

On Sat, Jul 5, 2008 at 6:32 PM, Wolfgang Denk <wd@denx.de> wrote:
>
> In message <85a5c2010805261103q76d25903q3bfac3bc3ad0a4b4@mail.gmail.com> you wrote:
> > I added code to handle the 011 chip, but I really didn't think anyone
> > would be interested in it.
>
> I think all such changes should get added to the public repository.
>
> > If someone wants it, I can post it.
>
> Please do.

When I get to work on Monday, I will have to synch to the latest
u-boot, and then I'll post a patch for the 011 chip.  It's really
quite trivial.

Regards,

Matt Gessner