* [U-Boot] I2C Register
@ 2010-02-04 14:30 Ronny D
2010-02-04 14:53 ` Stefan Roese
0 siblings, 1 reply; 10+ messages in thread
From: Ronny D @ 2010-02-04 14:30 UTC (permalink / raw)
To: u-boot
Hi,
?
I am trying to read SPD data from dimm though I2c.
as the board that i am using it has different I2c register so it is difficult to match with the register used in u-boot.
Can i get the information about
/*-----------------------------------------------------------------------------
| IIC Register Offsets
'----------------------------------------------------------------------------*/
#define IICMDBUF??0x00
#define IICSDBUF??0x02
#define IICLMADR??0x04
#define IICHMADR??0x05
#define IICCNTL???0x06
#define IICMDCNTL??0x07
#define IICSTS???0x08
#define IICEXTSTS??0x09
#define IICLSADR??0x0A
#define IICHSADR??0x0B
#define IICCLKDIV??0x0C
#define IICINTRMSK??0x0D
#define IICXFRCNT??0x0E
#define IICXTCNTLSS??0x0F
#define IICDIRECTCNTL??0x10
these register to that it will be easy for me to match with the register that i am using.
?
Regards,
Ronny
The INTERNET now has a personality. YOURS! See your Yahoo! Homepage. http://in.yahoo.com/
^ permalink raw reply [flat|nested] 10+ messages in thread* [U-Boot] I2C Register
2010-02-04 14:30 [U-Boot] I2C Register Ronny D
@ 2010-02-04 14:53 ` Stefan Roese
2010-02-05 5:43 ` Ronny D
2010-02-05 6:41 ` Ronny D
0 siblings, 2 replies; 10+ messages in thread
From: Stefan Roese @ 2010-02-04 14:53 UTC (permalink / raw)
To: u-boot
Hi Ronny,
On Thursday 04 February 2010 15:30:35 Ronny D wrote:
> I am trying to read SPD data from dimm though I2c.
> as the board that i am using it has different I2c register so it is
> difficult to match with the register used in u-boot.
Which platform are you using? PPC4xx? Or something else?
> Can i get the
> information about
> /*-------------------------------------------------------------------------
> ----
>
> | IIC Register Offsets
>
> '--------------------------------------------------------------------------
> --*/ #define IICMDBUF 0x00
> #define IICSDBUF 0x02
> #define IICLMADR 0x04
> #define IICHMADR 0x05
> #define IICCNTL 0x06
> #define IICMDCNTL 0x07
> #define IICSTS 0x08
> #define IICEXTSTS 0x09
> #define IICLSADR 0x0A
> #define IICHSADR 0x0B
> #define IICCLKDIV 0x0C
> #define IICINTRMSK 0x0D
> #define IICXFRCNT 0x0E
> #define IICXTCNTLSS 0x0F
> #define IICDIRECTCNTL 0x10
>
> these register to that it will be easy for me to match with the register
> that i am using.
These defines above are not available in U-Boot any more. I switched to using
a struct s while ago:
struct ppc4xx_i2c {
u8 mdbuf;
u8 res1;
u8 sdbuf;
...
You are using PPC4xx, right?
Cheers,
Stefan
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: office at denx.de
^ permalink raw reply [flat|nested] 10+ messages in thread* [U-Boot] I2C Register
2010-02-04 14:53 ` Stefan Roese
@ 2010-02-05 5:43 ` Ronny D
2010-02-05 5:59 ` Stefan Roese
2010-02-05 6:41 ` Ronny D
1 sibling, 1 reply; 10+ messages in thread
From: Ronny D @ 2010-02-05 5:43 UTC (permalink / raw)
To: u-boot
Hi Stefan,
I am using ppc440 for customized board.
U-boot version that i am using is u-boot-2009.11.
Here i am searching for the ppc4xx_i2c structure but not able to get it. on the other hand i have seen the i2c register macros used in i2c_transfer call.
~Ronny
--- On Thu, 4/2/10, Stefan Roese <sr@denx.de> wrote:
From: Stefan Roese <sr@denx.de>
Subject: Re: I2C Register
To: "Ronny D" <ronny_d37@yahoo.com>
Cc: u-boot at lists.denx.de
Date: Thursday, 4 February, 2010, 2:53 PM
Hi Ronny,
On Thursday 04 February 2010 15:30:35 Ronny D wrote:
> I am trying to read SPD data from dimm though I2c.
> as the board that i am using it has different I2c register so it is
>? difficult to match with the register used in u-boot.
Which platform are you using? PPC4xx? Or something else?
>? Can i get the
>? information about
> /*-------------------------------------------------------------------------
> ----
>
> | IIC Register Offsets
>
> '--------------------------------------------------------------------------
> --*/ #define IICMDBUF? 0x00
> #define IICSDBUF? 0x02
> #define IICLMADR? 0x04
> #define IICHMADR? 0x05
> #define IICCNTL???0x06
> #define IICMDCNTL? 0x07
> #define IICSTS???0x08
> #define IICEXTSTS? 0x09
> #define IICLSADR? 0x0A
> #define IICHSADR? 0x0B
> #define IICCLKDIV? 0x0C
> #define IICINTRMSK? 0x0D
> #define IICXFRCNT? 0x0E
> #define IICXTCNTLSS? 0x0F
> #define IICDIRECTCNTL? 0x10
>
> these register to that it will be easy for me to match with the register
>? that i am using.
These defines above are not available in U-Boot any more. I switched to using
a struct s while ago:
struct ppc4xx_i2c {
? ? ? ? u8 mdbuf;
? ? ? ? u8 res1;
? ? ? ? u8 sdbuf;
??? ...
You are using PPC4xx, right?
Cheers,
Stefan
--
DENX Software Engineering GmbH,? ? ? MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich,? Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: office at denx.de
Your Mail works best with the New Yahoo Optimized IE8. Get it NOW! http://downloads.yahoo.com/in/internetexplorer/
^ permalink raw reply [flat|nested] 10+ messages in thread* [U-Boot] I2C Register
2010-02-05 5:43 ` Ronny D
@ 2010-02-05 5:59 ` Stefan Roese
0 siblings, 0 replies; 10+ messages in thread
From: Stefan Roese @ 2010-02-05 5:59 UTC (permalink / raw)
To: u-boot
Hi Ronny,
On Friday 05 February 2010 06:43:20 Ronny D wrote:
> I am using ppc440 for customized board.
So is this a "normal" AMCC PPC4xx (e.g. 440GX...) or a custom PPC4xx chip? If
it's a common 4xx, then the normal PPC4xx I2C code should just work for you as
well.
> U-boot version that i am using is u-boot-2009.11.
That is before the restructuring. For new work please use the latest version
from the git repository.
> Here i am searching for the ppc4xx_i2c structure but not able to get it. on
> the other hand i have seen the i2c register macros used in i2c_transfer
> call.
Again, 2009-11 is already outdated. I reworked the I2C stuff in the meantime.
Try the latest version and take a look at:
cpu/ppc4xx/i2c.c
include/4xx_i2c.h
Cheers,
Stefan
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: office at denx.de
^ permalink raw reply [flat|nested] 10+ messages in thread
* [U-Boot] I2C Register
2010-02-04 14:53 ` Stefan Roese
2010-02-05 5:43 ` Ronny D
@ 2010-02-05 6:41 ` Ronny D
2010-02-05 7:24 ` Stefan Roese
1 sibling, 1 reply; 10+ messages in thread
From: Ronny D @ 2010-02-05 6:41 UTC (permalink / raw)
To: u-boot
It is not a normal AMCC PPC4xx, its a customized PPC4xx chip. so I2C code wont work for me as it is.
i will have to map my register with i2c register used by u-boot.
Now i have downloaded latest u-boot version(Jan 25 2010 12:37 Link u-boot-latest.tar.bz2 -> u-boot-2009.11.1.tar.bz2) from ftp.
still ppc4xx_i2c structure i could not found.
~Ronny.
--- On Thu, 4/2/10, Stefan Roese <sr@denx.de> wrote:
Hi Ronny,
On Friday 05 February 2010 06:43:20 Ronny D wrote:
> I am using ppc440 for customized board.
So is this a "normal" AMCC PPC4xx (e.g. 440GX...) or a custom PPC4xx chip? If
it's a common 4xx, then the normal PPC4xx I2C code should just work for you as
well.
> U-boot version that i am using is u-boot-2009.11.
That is before the restructuring. For new work please use the latest version
from the git repository.
> Here i am searching for the ppc4xx_i2c structure but not able to get it. on
> the other hand i have seen the i2c register macros used in i2c_transfer
> call.
Again, 2009-11 is already outdated. I reworked the I2C stuff in the meantime.
Try the latest version and take a look at:
cpu/ppc4xx/i2c.c
include/4xx_i2c.h
Cheers,
Stefan
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: off... at denx.de
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^ permalink raw reply [flat|nested] 10+ messages in thread* [U-Boot] I2C Register
2010-02-05 6:41 ` Ronny D
@ 2010-02-05 7:24 ` Stefan Roese
2010-02-05 8:22 ` Ronny D
2010-03-02 5:50 ` [U-Boot] U-boot compilation for little endian Ronny D
0 siblings, 2 replies; 10+ messages in thread
From: Stefan Roese @ 2010-02-05 7:24 UTC (permalink / raw)
To: u-boot
On Friday 05 February 2010 07:41:27 Ronny D wrote:
> It is not a normal AMCC PPC4xx, its a customized PPC4xx chip. so I2C code
> wont work for me as it is.
I see. So you should probably not base your I2C driver code on the PPC4xx
code. Perhaps you could use the soft_i2c code, where you only need some GPIO's
to control the I2C signals.
> i will have to map my register with i2c register used by u-boot.
>
> Now i have downloaded latest u-boot version(Jan 25 2010 12:37 Link
> u-boot-latest.tar.bz2 -> u-boot-2009.11.1.tar.bz2) from ftp.
>
> still ppc4xx_i2c structure i could not found.
That's because the source code on the FTP server is reflecting the last
release version. Please use the latest version from the git repository
instead:
http://git.denx.de/?p=u-boot.git;a=summary
There is also the possibility to download a snapshort in this web page, if you
can't use git for some reason.
Cheers,
Stefan
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: office at denx.de
^ permalink raw reply [flat|nested] 10+ messages in thread
* [U-Boot] I2C Register
2010-02-05 7:24 ` Stefan Roese
@ 2010-02-05 8:22 ` Ronny D
2010-02-05 8:32 ` Stefan Roese
2010-03-02 5:50 ` [U-Boot] U-boot compilation for little endian Ronny D
1 sibling, 1 reply; 10+ messages in thread
From: Ronny D @ 2010-02-05 8:22 UTC (permalink / raw)
To: u-boot
Stefan,
My Customized ppc4xx I2C interface provides two I2C controllers. so i think we will have to use Hard I2C ( because i will have to modify the same in kernel too).
Shall i used the same i2c driver from u-boot by modifying the register or write my own driver for it?
i found the ppc4xx_i2c structure, but can i get the information about the each parameter or register used in that structure.
~Ronny
--- On Fri, 5/2/10, Stefan Roese <sr@denx.de> wrote:
From: Stefan Roese <sr@denx.de>
Subject: Re: I2C Register
To: "Ronny D" <ronny_d37@yahoo.com>
Cc: u-boot at lists.denx.de
Date: Friday, 5 February, 2010, 7:24 AM
On Friday 05 February 2010 07:41:27 Ronny D wrote:
> It is not a normal AMCC PPC4xx, its a customized PPC4xx chip. so I2C code
>? wont work for me as it is.
I see. So you should probably not base your I2C driver code on the PPC4xx
code. Perhaps you could use the soft_i2c code, where you only need some GPIO's
to control the I2C signals.
> i will have to map my register with i2c register used by u-boot.
>
> Now i have downloaded latest u-boot version(Jan 25 2010 12:37 Link
>? u-boot-latest.tar.bz2 -> u-boot-2009.11.1.tar.bz2) from ftp.
>
> still ppc4xx_i2c structure i could not found.
That's because the source code on the FTP server is reflecting the last
release version. Please use the latest version from the git repository
instead:
http://git.denx.de/?p=u-boot.git;a=summary
There is also the possibility to download a snapshort in this web page, if you
can't use git for some reason.
Cheers,
Stefan
--
DENX Software Engineering GmbH,? ? ? MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich,? Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: office at denx.de
Your Mail works best with the New Yahoo Optimized IE8. Get it NOW! http://downloads.yahoo.com/in/internetexplorer/
^ permalink raw reply [flat|nested] 10+ messages in thread* [U-Boot] I2C Register
2010-02-05 8:22 ` Ronny D
@ 2010-02-05 8:32 ` Stefan Roese
0 siblings, 0 replies; 10+ messages in thread
From: Stefan Roese @ 2010-02-05 8:32 UTC (permalink / raw)
To: u-boot
Ronny,
On Friday 05 February 2010 09:22:59 Ronny D wrote:
> My Customized ppc4xx I2C interface provides two I2C controllers. so i think
> we will have to use Hard I2C ( because i will have to modify the same in
> kernel too).
Yes, this would be best. But if you can map the I2C pins via pin multiplexing
to some GPIO pins, you could use the existing soft_i2c driver.
> Shall i used the same i2c driver from u-boot by modifying the register or
> write my own driver for it?
I have no idea, since I don't have any infos about your I2C controller. I
don't know if it is similar to any of the supported controllers. So you need
to check this yourself.
> i found the ppc4xx_i2c structure, but can i get the information about the
> each parameter or register used in that structure.
From the PPC4xx user manuals. For example the PPC440EPx. You can download
those manual from the AppliedMicro (AMCC) web site.
Cheers,
Stefan
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: office at denx.de
^ permalink raw reply [flat|nested] 10+ messages in thread
* [U-Boot] U-boot compilation for little endian
2010-02-05 7:24 ` Stefan Roese
2010-02-05 8:22 ` Ronny D
@ 2010-03-02 5:50 ` Ronny D
2010-03-02 7:53 ` Wolfgang Denk
1 sibling, 1 reply; 10+ messages in thread
From: Ronny D @ 2010-03-02 5:50 UTC (permalink / raw)
To: u-boot
Hi Stefan,
I am using customized ppc440 based board. We need u-boot in little endian.
Will it possible to compile the u-boot source in little endian for ppc440?
Regards,
Ronny D?
The INTERNET now has a personality. YOURS! See your Yahoo! Homepage. http://in.yahoo.com/
^ permalink raw reply [flat|nested] 10+ messages in thread* [U-Boot] U-boot compilation for little endian
2010-03-02 5:50 ` [U-Boot] U-boot compilation for little endian Ronny D
@ 2010-03-02 7:53 ` Wolfgang Denk
0 siblings, 0 replies; 10+ messages in thread
From: Wolfgang Denk @ 2010-03-02 7:53 UTC (permalink / raw)
To: u-boot
Dear Ronny D,
In message <143206.74847.qm@web46114.mail.sp1.yahoo.com> you wrote:
>
> I am using customized ppc440 based board. We need u-boot in little endian.
> Will it possible to compile the u-boot source in little endian for ppc440?
The natural byte order for the Power Architecture is Big Endian. We do
not support Littel Endian mode on Power.
I have to admit that I doubt if efforts to implement LE mode on
Power make any sense - as mentioned, BE is the natural byte order, and
usually it's much easier to explicitly convert date when accessing LE
devices as we're doing for example when accessing the PCI bus.
I recommend to reconsider your plans.
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
Unix: Some say the learning curve is steep, but you only have to
climb it once. - Karl Lehenbauer
^ permalink raw reply [flat|nested] 10+ messages in thread
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2010-02-04 14:30 [U-Boot] I2C Register Ronny D
2010-02-04 14:53 ` Stefan Roese
2010-02-05 5:43 ` Ronny D
2010-02-05 5:59 ` Stefan Roese
2010-02-05 6:41 ` Ronny D
2010-02-05 7:24 ` Stefan Roese
2010-02-05 8:22 ` Ronny D
2010-02-05 8:32 ` Stefan Roese
2010-03-02 5:50 ` [U-Boot] U-boot compilation for little endian Ronny D
2010-03-02 7:53 ` Wolfgang Denk
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