[PATCH 2/2] of: addr: Translate 'dma-ranges' for parent nodes missing 'dma-ranges'

[Simon Glass]

On Fri, 26 Feb 2021 at 00:36, Bin Meng <bmeng.cn at gmail.com> wrote:
>
> 'dma-ranges' frequently exists without parent nodes having 'dma-ranges'.
> While this is an error for 'ranges', this is fine because DMA capable
> devices always have a translatable DMA address. Also, with no
> 'dma-ranges' at all, the assumption is that DMA addresses are 1:1 with
> no restrictions unless perhaps the device itself has implicit
> restrictions.
>
> This keeps in sync with Linux kernel commit:
>
>   81db12ee15cb: of/address: Translate 'dma-ranges' for parent nodes missing 'dma-ranges'
>
> Signed-off-by: Bin Meng <bmeng.cn at gmail.com>
> ---
>
>  drivers/core/of_addr.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

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