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

[Matthias Brugger]

On 10/11/24 19:09, Peter Robinson 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>

Acked-by: Matthias Brugger <mbrugger at suse.com>

> ---
> 
> v2: Update the cma string
> 
>   board/raspberrypi/rpi/rpi.c | 5 ++++-
>   1 file changed, 4 insertions(+), 1 deletion(-)
> 
> 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");
> +
>   	/* Adjust dma-ranges for the SD card and PCI bus as they can depend on
>   	 * the SoC revision
>   	 */