[PATCH v5 3/7] of/address: Introduce of_dma_get_max_cpu_address()

[Rob Herring]

On Thu, Oct 29, 2020 at 12:26 PM Nicolas Saenz Julienne
<nsaenzjulienne at suse.de> wrote:
>
> Introduce of_dma_get_max_cpu_address(), which provides the highest CPU
> physical address addressable by all DMA masters in the system. It's
> specially useful for setting memory zones sizes at early boot time.
>
> Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne at suse.de>
>
> ---
>
> Changes since v4:
>  - Return max address, not address limit (one-off difference)
>
> Changes since v3:
>  - use u64 with cpu_end
>
> Changes since v2:
>  - Use PHYS_ADDR_MAX
>  - return phys_dma_t
>  - Rename function
>  - Correct subject
>  - Add support to start parsing from an arbitrary device node in order
>    for the function to work with unit tests
>
>  drivers/of/address.c | 42 ++++++++++++++++++++++++++++++++++++++++++
>  include/linux/of.h   |  7 +++++++
>  2 files changed, 49 insertions(+)

Reviewed-by: Rob Herring <robh at kernel.org>