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

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Message-ID: <aDWe2StmB-dhQNtv@jean.localdomain>
Date: Tue, 27 May 2025 19:15:37 +0800
From: Ze Huang <huangze@...t.edu.cn>
To: Krzysztof Kozlowski <krzk@...nel.org>, 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 Tue, May 27, 2025 at 08:54:42AM +0200, Krzysztof Kozlowski wrote:
> 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

OK