Re: [Xen-devel] [XEN PATCH for-4.13 v3] xen/arm: platform: fix Raspberry Pi compatible string

[Julien Grall <julien.grall@xxxxxxx>]

Hi,

On 21/10/2019 02:27, Stewart Hildebrand wrote:
> Both upstream [1] and downstream [2] Linux kernels use "brcm,bcm2711"
> as the compatible string for Raspberry Pi 4. Add this string to our
> platform compatible list.
>
> The brcm,bcm2838 convention is abandoned. Remove it.
>
> Rename the variables within the file to a rpi4_* prefix since the file
> is meant to cover the Raspberry Pi 4 platform.
>
> If you are using a device tree with the old compatible string
> brcm,bcm2838, you will need to upgrade your device tree to one that has
> the new brcm,bcm2711 compatible string.
>
> [1] https://patchwork.kernel.org/patch/11165407/
> [2] 
> https://github.com/raspberrypi/linux/commit/53fdd7b8c8cb9c87190caab4fd459f89e1b4a7f8
>
> Signed-off-by: Stewart Hildebrand <stewart.hildebrand@xxxxxxxxxxxxxxx>
Acked-by: Julien Grall <julien.grall@xxxxxxx>

@Juergen: RPI4 support has been added during Xen 4.13 development. This is still 
in development (i.e. it can't work out-of-box at least on the kernel side), but 
it would be good if we can enable support for more recent kernel. This would 
help to draw more users to Xen and also possibly reduce the number of hacks 
necessary in Linux/Device-Tree when using Xen on RPI4.
This patch only touches RPI4 specific code, so it will not affect the rest of 
the supported platform.
Cheers,

--
Julien Grall

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