linux-kernel - Re: [PATCH v3 3/8] dt-bindings: PCI: qcom-ep: enable DMA for SM8450

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Message-ID: <20250222-radiant-optimal-ape-8c14f9@krzk-bin>
Date: Sat, 22 Feb 2025 11:32:49 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>, 
	Lorenzo Pieralisi <lpieralisi@...nel.org>, Krzysztof Wilczyński <kw@...ux.com>, 
	Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Mrinmay Sarkar <quic_msarkar@...cinc.com>, Bjorn Andersson <andersson@...nel.org>, 
	Konrad Dybcio <konradybcio@...nel.org>, Krzysztof Wilczyński <kwilczynski@...nel.org>, 
	linux-arm-msm@...r.kernel.org, linux-pci@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 3/8] dt-bindings: PCI: qcom-ep: enable DMA for SM8450

On Fri, Feb 21, 2025 at 05:52:01PM +0200, Dmitry Baryshkov wrote:
> Qualcomm SM8450 platform can (and should) be using DMA for the PCIe EP
> transfers. Extend the MMIO regions and interrupts in order to acommodate
> for the DMA resources, mark iommus property as required for the
> platform.
> 
> Upstream DT doesn't provide support for the EP mode of the PCIe
> controller, so while this is an ABI break, it doesn't break any of the
> supported platforms.
> 
> Fixes: 63e445b746aa ("dt-bindings: PCI: qcom-ep: Add support for SM8450 SoC")
> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> ---
>  Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml | 14 ++++++++++----
>  1 file changed, 10 insertions(+), 4 deletions(-)

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

Best regards,
Krzysztof