linux-kernel - Re: [PATCH v4 2/4] dt-bindings: soc: spacemit: Add K1 MBUS controller

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Message-ID: <20250527-friendly-armadillo-of-snow-5bec9e@kuoka>
Date: Tue, 27 May 2025 08:54:42 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Ze Huang <huangze@...t.edu.cn>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
	Conor Dooley <conor+dt@...nel.org>, Yixun Lan <dlan@...too.org>, 
	Thinh Nguyen <Thinh.Nguyen@...opsys.com>, Philipp Zabel <p.zabel@...gutronix.de>, 
	Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, 
	Albert Ou <aou@...s.berkeley.edu>, Alexandre Ghiti <alex@...ti.fr>, linux-usb@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org, spacemit@...ts.linux.dev, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 2/4] dt-bindings: soc: spacemit: Add K1 MBUS controller

On Mon, May 26, 2025 at 10:40:18PM GMT, Ze Huang wrote:
> Some devices on the SpacemiT K1 SoC perform DMA through a memory bus
> (MBUS) that is not their immediate parent in the device tree. This bus
> uses a different address mapping than the CPU.
> 
> To express this topology properly, devices are expected to use the
> interconnects with name "dma-mem" to reference the MBUS controller.
> 
> Signed-off-by: Ze Huang <huangze@...t.edu.cn>
> ---
>  .../bindings/soc/spacemit/spacemit,k1-mbus.yaml    | 55 ++++++++++++++++++++++
>  1 file changed, 55 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/soc/spacemit/spacemit,k1-mbus.yaml b/Documentation/devicetree/bindings/soc/spacemit/spacemit,k1-mbus.yaml

Memory bus controllers go to /memory-controllers/ directory.

Best regards,
Krzysztof