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SubjectRe: [PATCH v2] arm64: dts: sdm845: Add iommus property to qup
On 21-11-20, 19:41, Bjorn Andersson wrote:
> From: Stephen Boyd <swboyd@chromium.org>
>
> The SMMU that sits in front of the QUP needs to be programmed properly
> so that the i2c geni driver can allocate DMA descriptors. Failure to do
> this leads to faults when using devices such as an i2c touchscreen where
> the transaction is larger than 32 bytes and we use a DMA buffer.
>
> arm-smmu 15000000.iommu: Unexpected global fault, this could be serious
> arm-smmu 15000000.iommu: GFSR 0x00000002, GFSYNR0 0x00000002, GFSYNR1 0x000006c0, GFSYNR2 0x00000000
>
> Add the right SID and mask so this works.

Reviewed-by: Vinod Koul <vkoul@kernel.org>

on DB845c with GSI DMA:
Tested-by: Vinod Koul <vkoul@kernel.org>

--
~Vinod

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