Hi Simon,
On Fri, Apr 30, 2021 at 9:17 PM Bin Meng bmeng.cn@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@gmail.com Reviewed-by: Simon Glass sjg@chromium.org
Changes in v2:
- rebase on top of Dario's revert patch: http://patchwork.ozlabs.org/project/uboot/patch/20210425141746.19115-6-dario...
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(-)
Regards, Bin