From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To: Chen-Yu Tsai <wenst@chromium.org>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Jernej Skrabec <jernej.skrabec@gmail.com>,
Samuel Holland <samuel@sholland.org>,
Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: linux-media@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] media: dt-bindings: allwinner: h6-vpu-g2: Add IOMMU reference property
Date: Tue, 15 Nov 2022 15:11:14 +0100 [thread overview]
Message-ID: <b7936281-fae3-97af-e480-539d2675aa35@linaro.org> (raw)
In-Reply-To: <20221115090644.3602573-2-wenst@chromium.org>
On 15/11/2022 10:06, Chen-Yu Tsai wrote:
> The Hantro G2 video decoder block sits behind an IOMMU. The device tree
> binding needs a property to reference it. Without a reference for the
> implementation to properly configure the IOMMU, it will fault and cause
> the video decoder to fail.
>
> Add an "iommus" property for referring to the IOMMU port. The master ID
> in the example is taken from the IOMMU fault error message on Linux,
> and the number seems to match the order in the user manual's IOMMU
> diagram.
>
> Fixes: fd6be12716c4 ("media: dt-bindings: allwinner: document H6 Hantro G2 binding")
> Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
> ---
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Best regards,
Krzysztof
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next prev parent reply other threads:[~2022-11-15 14:12 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-15 9:06 [PATCH 0/2] arm64: allwinner: h6: Add IOMMU reference to Hantro G2 decoder Chen-Yu Tsai
2022-11-15 9:06 ` [PATCH 1/2] media: dt-bindings: allwinner: h6-vpu-g2: Add IOMMU reference property Chen-Yu Tsai
2022-11-15 14:11 ` Krzysztof Kozlowski [this message]
2022-11-15 21:30 ` Jernej Škrabec
2022-11-15 9:06 ` [PATCH 2/2] arm64: dts: allwinner: h6: Add IOMMU reference to Hantro G2 Chen-Yu Tsai
2022-11-15 21:31 ` Jernej Škrabec
2022-11-16 18:31 ` [PATCH 0/2] arm64: allwinner: h6: Add IOMMU reference to Hantro G2 decoder Jernej Škrabec
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