[Buildroot] Asking a favor

[Buildroot] Asking a favor

[Yann E. MORIN]

Parsa,

[resend, forgot to Cc the proper buildroot ML]

On 2014-04-14 01:23 +0430, Parsa Panahi spake thusly:
> I have a problem with buildroot configuration file. when I create the .config file and make it, I face an error in the terminal
> that :
> 
> linux/linux.mk:69: *** No kernel device tree source specified, check your BR2_LINUX_KERNEL_USE_INTREE_DTS /
> BR2_LINUX_KERNEL_USE_CUSTOM_DTS settings.  Stop.
> 
> I searched the whole Internet !!! and found nothing useful ! I don't know what causing this problem !! I've commented these
> variables ( BR2_LINUX_KERNEL_USE_INTREE_DTS, BR2_LINUX_KERNEL_USE_CUSTOM_DTS) in the .config file but when I make the new file it
> gives another error for another variable !!
> 
> 
> I don't know how to solve this and whom to seek answer from !!! I

The proper place to look for support on Buildroot is to look on the
Buildroot website:
    http://buildroot.org/
where you'll find a "Support" button that points to:
    http://buildroot.org/support.html

Forwarding your mail to the list now. Maybe someone there will have an
idea.

And please, do not post HTML mails, they are forbidden on the list.

Regards,
Yann E. MORIN.

-- 
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
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[Buildroot] Asking a favor

[Thomas Petazzoni]

Hello,

On Sun, 13 Apr 2014 23:28:51 +0200, Yann E. MORIN wrote:

> On 2014-04-14 01:23 +0430, Parsa Panahi spake thusly:
> > I have a problem with buildroot configuration file. when I create the .config file and make it, I face an error in the terminal
> > that :
> > 
> > linux/linux.mk:69: *** No kernel device tree source specified, check your BR2_LINUX_KERNEL_USE_INTREE_DTS /
> > BR2_LINUX_KERNEL_USE_CUSTOM_DTS settings.  Stop.
> > 
> > I searched the whole Internet !!! and found nothing useful ! I don't know what causing this problem !! I've commented these
> > variables ( BR2_LINUX_KERNEL_USE_INTREE_DTS, BR2_LINUX_KERNEL_USE_CUSTOM_DTS) in the .config file but when I make the new file it
> > gives another error for another variable !!

Well, the message says it all: you have told Buildroot to generate a
Device Tree blob for you by enabling the BR2_LINUX_KERNEL_DTS_SUPPORT
option, but you didn't provide any reference to which Device Tree you
wanted to compile.

Can you share your Buildroot .config file so we can check that this is
actually what's going on?

Thanks,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

[Buildroot] Asking a favor

[Thomas Petazzoni]

Dear Parsa Panahi,

On Mon, 14 Apr 2014 20:45:16 +0430, Parsa Panahi wrote:
>  
> 
> Hi Thomas I knew that , but it doesn't matter if I select Device Tree
> blob or not, it always gives me the error ! 

You do have Device Tree support selected. From your .config file:

BR2_LINUX_KERNEL_DTS_SUPPORT=y
BR2_LINUX_KERNEL_USE_INTREE_DTS=y
# BR2_LINUX_KERNEL_USE_CUSTOM_DTS is not set
BR2_LINUX_KERNEL_INTREE_DTS_NAME=""
BR2_LINUX_KERNEL_INSTALL_TARGET=y

So here, you have selected Device Tree support
(BR2_LINUX_KERNEL_DTS_SUPPORT=y), indicated you wanted to use a Device
Tree source that is part of the kernel sources
(BR2_LINUX_KERNEL_USE_INTREE_DTS=y), but you haven't told Buildroot
*which* Device Tree to use (BR2_LINUX_KERNEL_INTREE_DTS_NAME is empty).

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

[Buildroot] Asking a favor

[Parsa Panahi]

 

Dear Thomas, I've Selected the "Use a device tree present in the kernel"
in the "Kernel -> Device tree support" and I don't know why it shows 

BR2_LINUX_KERNEL_INTREE_DTS_NAME="" !!!

what are my options in here so I could manually type it in the .config
file ?

On 2014-04-14 20:48, Thomas Petazzoni wrote: 

> Dear Parsa Panahi,
> 
> On Mon, 14 Apr 2014 20:45:16 +0430, Parsa Panahi wrote:
> 
>> Hi Thomas I knew that , but it doesn't matter if I select Device Tree blob or not, it always gives me the error !
> 
> You do have Device Tree support selected. From your .config file:
> 
> BR2_LINUX_KERNEL_DTS_SUPPORT=y
> BR2_LINUX_KERNEL_USE_INTREE_DTS=y
> # BR2_LINUX_KERNEL_USE_CUSTOM_DTS is not set
> BR2_LINUX_KERNEL_INTREE_DTS_NAME=""
> BR2_LINUX_KERNEL_INSTALL_TARGET=y
> 
> So here, you have selected Device Tree support
> (BR2_LINUX_KERNEL_DTS_SUPPORT=y), indicated you wanted to use a Device
> Tree source that is part of the kernel sources
> (BR2_LINUX_KERNEL_USE_INTREE_DTS=y), but you haven't told Buildroot
> *which* Device Tree to use (BR2_LINUX_KERNEL_INTREE_DTS_NAME is empty).
> 
> Best regards,
> 
> Thomas

-- 

Parsa Panahi
D?partement de g?nie ?lectrique
?tudiant de l'?lectronique num?rique
Sharif Universit? de Technologie - T?h?ran - Iran

 
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[Buildroot] Asking a favor

[Thomas De Schampheleire]

Hi Parsa Panahi,

(Please don't top-post, put your reply below the original mail...)


Parsa Panahi <panahi.parsa@paravisioner.com> schreef:
> 
>
>Dear Thomas, I've Selected the "Use a device tree present in the kernel"
>in the "Kernel -> Device tree support" and I don't know why it shows 
>
>BR2_LINUX_KERNEL_INTREE_DTS_NAME="" !!!
>
>what are my options in here so I could manually type it in the .config
>file ?

Which board are you targeting? Is this a standard development or reference board, or a custom design?

A device tree is a description of the hardware. If you are using a common board, you may find the right device tree source in directory arch/<arch>/boot/dts of the kernel sources. If you are using a custom board, you will have to create the device tree yourself.

Best regards,
Thomas