From: Rob Herring <robh@kernel.org>
To: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: vkoul@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com,
dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org,
dan.j.williams@intel.com, grygorii.strashko@ti.com,
devicetree@vger.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: dma: ti: k3-udma: Update for atype support (virtualization)
Date: Wed, 26 Feb 2020 09:21:23 -0600 [thread overview]
Message-ID: <20200226152123.GA25719@bogus> (raw)
In-Reply-To: <20200218143126.11361-2-peter.ujfalusi@ti.com>
On Tue, 18 Feb 2020 16:31:25 +0200, Peter Ujfalusi wrote:
> In UDMA each channel can use different ATYPE value which tells UDMA how
> the addresses in the descriptors should be treated:
> 0: pointers are physical addresses (no translation)
> 1: pointers are intermediate addresses (PVU)
> 2: pointers are virtual addresses (SMMU)
>
> When virtualized environment is used then the dma binding should use
> additional cell to configure the desired ATYPE for the channel.
>
> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
> ---
> .../devicetree/bindings/dma/ti/k3-udma.yaml | 19 ++++++++++++++++++-
> 1 file changed, 18 insertions(+), 1 deletion(-)
>
Reviewed-by: Rob Herring <robh@kernel.org>
next prev parent reply other threads:[~2020-02-26 15:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-18 14:31 [PATCH 0/2] dmaengine: ti: k3-udma: Support for per channel atype Peter Ujfalusi
2020-02-18 14:31 ` [PATCH 1/2] dt-bindings: dma: ti: k3-udma: Update for atype support (virtualization) Peter Ujfalusi
2020-02-26 15:21 ` Rob Herring [this message]
2020-02-18 14:31 ` [PATCH 2/2] dmaengine: ti: k3-udma: Implement support for atype (for virtualization) Peter Ujfalusi
2020-03-02 9:14 ` [PATCH 0/2] dmaengine: ti: k3-udma: Support for per channel atype Vinod Koul
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