[U-Boot] u-boot device model SPI + SPI Flash

[Hoefle Marco]

Ok renaming it worked and I could extract the petalinux bsp. Thanks for the hint.
The dts I found is very similar to the one we use successfully in the mainline Linux Kernel. There SPI + SPI Flash are working.

However, I think (please correct me if I am wrong) the petalinux u-boot config does not use driver model + dts.
I think the previous method does not work anymore in mainline u-boot as the spi driver has already been ported.
If I do not use these defines:
# define CONFIG_DM
# define CONFIG_DM_SPI
# define CONFIG_OF_SPI

I'l get a compilation error.
So I think it would be a good change to test the u-boot driver model with the Xilinx SPI driver. I am happy to play the guinea pic ;-)

I think currently it is something with the u-boot dts parsing as none of the functions provided by xilinx_spi.c are called.
I attached the currently used u-boot configuration + u-boot dts.





> -----Original Message-----
> From: Michal Simek [mailto:michal.simek at xilinx.com]
> Sent: Dienstag, 27. Oktober 2015 12:37
> To: Hoefle Marco <Marco.Hoefle at nanotronic.ch>; Michal Simek
> <michal.simek at xilinx.com>; Jagan Teki <jteki at openedev.com>
> Cc: u-boot at lists.denx.de
> Subject: Re: [U-Boot] u-boot device model SPI + SPI Flash
> 
> On 10/27/2015 12:12 PM, Hoefle Marco wrote:
> >
> >
> >> -----Original Message-----
> >> From: Michal Simek [mailto:michal.simek at xilinx.com]
> >> Sent: Montag, 26. Oktober 2015 14:52
> >> To: Jagan Teki <jteki at openedev.com>; Hoefle Marco
> >> <Marco.Hoefle at nanotronic.ch>; Michal Simek
> <michal.simek at xilinx.com>
> >> Cc: u-boot at lists.denx.de
> >> Subject: Re: [U-Boot] u-boot device model SPI + SPI Flash
> >>
> >> On 10/23/2015 12:20 PM, Jagan Teki wrote:
> >>> On 23 October 2015 at 15:42, Hoefle Marco
> >>> <Marco.Hoefle at nanotronic.ch>
> >> wrote:
> >>>> Maybe somebody has a valid u-boot dts file for a microblaze system
> >>>> with
> >> an SPI core? That would helpful.
> >>>> We want to move from a parallel nor flash to a SPI flash for FPGA
> >>>> config,
> >> u-boot, Linux Kernel and rootfs.
> >>>> The last missing part is u-boot. The kernel dts file is ok and the
> >>>> mtd
> >> partitions are set up correctly.
> >>>
> >>> I even grepped on linux/arch/microblaze couldn't get much info, So
> >>> added Michal he well aware of this may be he can help.
> >>
> >>
> >>
> http://www.xilinx.com/support/download/index.html/content/xilinx/en/d
> >> o wnloadNav/embedded-design-tools/2015-2.html
> >>
> >> ac701 bsp and I expect also Kc705.
> >
> > I downloaded the AC701 bsp file but it is not a valid archive. Do I need to
> use  (and learn how to use) the 3 GB pertalinux tools to build u-boot for
> Microblaze?
> > The u-boot config for the AC701 and the dts file would probably sufficient.
> 
> it is tar.gz just rename it.
> 
> Thanks,
> Michal
 

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