Re: [PATCH 2/7] dt-bindings: sram: sunxi-sram: Add H616 SRAM regions

Rob Herring (Arm)
2026-04-07T17:50:19Z

On Wed, 25 Mar 2026 00:43:50 +0800, Chen-Yu Tsai wrote:
> The Allwinner H616 has two switchable peripheral SRAM regions:
>
> - The VE SRAM is a 2 MB dedicated SRAM for the Video Engine. CPU access
> to this region is enabled by default. CPU access can be disabled,
> after which reads will show the same stale value for all addresses,
> while writes are ignored.
>
> The mux value for this region is different from previous generations.
>
> - The SRAM C region is an alias of the first 128 KB of VE SRAM, plus 64
> KB of DE SRAM. The latter is otherwise unaccessible from the CPU. When
> CPU access is disabled, the whole region reads as zero, while writes
> are ignored.
>
> The mux value for this region is the same as on the A64 and H6.
>
> Add compatible strings for both of them.
>
> Signed-off-by: Chen-Yu Tsai <wens@kernel.org>
> ---
> .../bindings/sram/allwinner,sun4i-a10-system-control.yaml | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>

Acked-by: Rob Herring (Arm) <robh@kernel.org>