[PATCH v2] board: rpi: Pass CMA through from firmware DT

[Simon Glass]

On Fri, 11 Oct 2024 at 11:09, Peter Robinson <pbrobinson at gmail.com> wrote:
>
> For a lot of usecases, such as display, camera, media
> the Raspberry Pi needs a lot more CMA than distros
> configure as default so we should pass this parameter
> through so things work as expected. Fix a spelling
> mistake while we're at it.
>
> Signed-off-by: Peter Robinson <pbrobinson at gmail.com>
> ---
>
> v2: Update the cma string
>
>  board/raspberrypi/rpi/rpi.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
>

Reviewed-by: Simon Glass <sjg at chromium.org>

> diff --git a/board/raspberrypi/rpi/rpi.c b/board/raspberrypi/rpi/rpi.c
> index ab5ea85cf9f..dd5a318d239 100644
> --- a/board/raspberrypi/rpi/rpi.c
> +++ b/board/raspberrypi/rpi/rpi.c
> @@ -540,12 +540,15 @@ void  update_fdt_from_fw(void *fdt, void *fw_fdt)
>         if (fdt == fw_fdt)
>                 return;
>
> -       /* The firmware provides a more precie model; so copy that */
> +       /* The firmware provides a more precise model; so copy that */
>         copy_property(fdt, fw_fdt, "/", "model");
>
>         /* memory reserve as suggested by the firmware */
>         copy_property(fdt, fw_fdt, "/", "memreserve");
>
> +       /* copy the CMA memory setting from the firmware DT to linux */
> +       copy_property(fdt, fw_fdt, "/reserved-memory/linux,cma", "size");

Does this need / have nodes pointing to it from elsewhere in the tree?

> +
>         /* Adjust dma-ranges for the SD card and PCI bus as they can depend on
>          * the SoC revision
>          */
> --
> 2.47.0
>

Regards,
Simon