[PATCH v2 1/2] of: addr: Translate 'dma-ranges' for parent nodes missing 'dma-ranges'
bmeng.cn at gmail.com
Mon May 17 04:03:55 CEST 2021
On Fri, Apr 30, 2021 at 9:17 PM 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
> 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>
> Reviewed-by: Simon Glass <sjg at chromium.org>
> Changes in v2:
> - rebase on top of Dario's revert patch:
The above dependent patch is now in u-boot/master.
Could you please apply this series?
> - drop commit "of: addr: Abort address translation for parent nodes missing 'ranges'",
> as the revert patch restores the abort behavior
> drivers/core/of_addr.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
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