[yocto] [meta-raspberrypi][PATCH v2 4/4] README: Add a section about graphic stacks

[Khem Raj]

> On Aug 13, 2015, at 10:07 AM, Javier Martinez Canillas <javier at osg.samsung.com> wrote:
> 
> This patch adds to the README a section that explains the RPi can different
> graphics stacks and that the user can choose by manually changing providers.
> 
> Signed-off-by: Javier Martinez Canillas <javier at osg.samsung.com>
> 
> ---
> 
> Changes in v2: None
> 
> README | 9 +++++++++
> 1 file changed, 9 insertions(+)
> 
> diff --git a/README b/README
> index 678c0eb4a4e3..0569b353870c 100644
> --- a/README
> +++ b/README
> @@ -25,6 +25,7 @@ Contents:
>     2.K. Boot to U-Boot
>     2.L. Image with Initramfs
>     2.M. Device tree support
> +    2.O. Graphic stacks
> 3. Extra apps
>     3.A. omxplayer
> 4. Source code and mirrors
> @@ -195,6 +196,14 @@ kernels.
> NOTE: KERNEL_DEVICETREE is default enabled for kernel >= 3.18 and always disabled for
>       older kernel versions.
> 
> +2.O. Graphic stacks
> +===================
> +The Raspberry Pi boards can use one of two graphics stacks: The userland
> +user-space driver or the vc4 DRM/KMS kernel driver. By default userland
> +is used since the vc4 is still experimental. But this can be changed by
> +modifying the defaults for the kernel, egl, gles2, libgl and mesa providers.
> +This is explained in the conf/machine/include/rpi-default-providers.inc file.
> +

you may want to add pointer to the commented out code that you have added to select them
in rpi-default-providers.inc

> 3. Extra apps
> =============
> 
> --
> 2.4.3
> 

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