Re: [Buildroot] [PATCH v3 1/1] configs/zynqmp_kria_kr260_defconfig: new defconfig

[Luca Ceresoli via buildroot <buildroot@buildroot.org>]

Hi Neal,

On Sun, 3 Sep 2023 08:54:27 +0100
Neal Frager <neal.frager@amd.com> wrote:

> This patch adds support for Xilinx Kria KR260 starter kit.
> 
> KR260 features can be found here:
> https://www.xilinx.com/products/som/kria/kr260-robotics-starter-kit.html
> 
> While the Kria SOM is based on a ZynqMP SoC, there are some key
> boot config differences from the other ZynqMP evaluation boards.
> 
> 1. There are no boot switches on Kria SOMs. The boot mode is thus
> hard configured for QSPI flash. A pre-programmed boot.bin comes
> with every Starter Kit. U-Boot can then find the Linux kernel and
> file system on the SD card.
> 
> Optional instructions for updating the boot.bin in the QSPI flash
> can be found in the readme.txt file and the link below.
> 
> https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/1641152513/Kria+K26+SOM
> 
> 2. Kria SOMs use UART1 for the console instead of UART0. For this
> reason, Kria Starter Kits will use a separate extlinux.conf file
> from other ZynqMP evaluation boards.

The above 2 items are the same as the KV260, right?

> 3. The KR260 has a USB to SD card bridge, so the Linux kernel
> and file system are found on /dev/sda1 and /dev/sda2.
> 
> 4. The following patches have been submitted upstream for u-boot.  They are
> required for enabling the pinctrl of the tri-state registers, so that u-boot
> can detect the SD card connected via the USB to SD card bridge on the KR260
> carrier board.  These patches are temporarily included with buildroot until
> they have been applied upstream.
> 
> http://patchwork.ozlabs.org/project/uboot/list/?series=368369
> http://patchwork.ozlabs.org/project/uboot/list/?series=371196
> 
> Signed-off-by: Neal Frager <neal.frager@amd.com>

Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>

Luca

-- 
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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