From: sashiko-bot@kernel.org
To: "Chen-Yu Tsai" <wenst@chromium.org>
Cc: devicetree@vger.kernel.org, linux-pci@vger.kernel.org,
robh@kernel.org, conor+dt@kernel.org
Subject: Re: [PATCH RESEND] dt-bindings: PCI: mediatek-gen3: Allow memory-region for restricted DMA buffer
Date: Mon, 20 Jul 2026 09:26:19 +0000 [thread overview]
Message-ID: <20260720092619.B05C51F000E9@smtp.kernel.org> (raw)
In-Reply-To: <20260720092116.1823562-1-wenst@chromium.org>
> On some SoCs without an IOMMU behind the PCIe controller, the PCIe
> controller memory access could be limited to a small region by the
> firmware configuring a memory protection unit. This memory region
> must be assigned to the PCIe controller so that the OS knows to
> use that region. Otherwise PCIe devices would not work properly.
>
> Allow the memory-region property with one item pointing to a
> restricted DMA buffer.
>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> Acked-by: Rob Herring (Arm) <robh@kernel.org>
> Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260720092116.1823562-1-wenst@chromium.org?part=1
next prev parent reply other threads:[~2026-07-20 9:26 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-20 9:21 [PATCH RESEND] dt-bindings: PCI: mediatek-gen3: Allow memory-region for restricted DMA buffer Chen-Yu Tsai
2026-07-20 9:26 ` sashiko-bot [this message]
2026-07-20 12:51 ` Manivannan Sadhasivam
2026-07-20 12:53 ` Manivannan Sadhasivam
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