From: Eugen Hristev <eugen.hristev@microchip.com>
To: <vkoul@kernel.org>, <robh+dt@kernel.org>,
<tudor.ambarus@microchip.com>, <ludovic.desroches@microchip.com>
Cc: <dmaengine@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <nicolas.ferre@microchip.com>,
Eugen Hristev <eugen.hristev@microchip.com>
Subject: [PATCH 6/7] dt-bindings: dmaengine: at_xdmac: add optional microchip,m2m property
Date: Mon, 14 Sep 2020 17:09:55 +0300 [thread overview]
Message-ID: <20200914140956.221432-7-eugen.hristev@microchip.com> (raw)
In-Reply-To: <20200914140956.221432-1-eugen.hristev@microchip.com>
Add optional microchip,m2m property that specifies if a controller is
dedicated to memory to memory operations only.
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
---
Documentation/devicetree/bindings/dma/atmel-xdma.txt | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/dma/atmel-xdma.txt b/Documentation/devicetree/bindings/dma/atmel-xdma.txt
index 510b7f25ba24..642da6b95a29 100644
--- a/Documentation/devicetree/bindings/dma/atmel-xdma.txt
+++ b/Documentation/devicetree/bindings/dma/atmel-xdma.txt
@@ -15,6 +15,12 @@ the dmas property of client devices.
interface identifier,
- bit 30-24: PERID, peripheral identifier.
+Optional properties:
+- microchip,m2m: this controller is connected on AXI only to memory and it's
+ dedicated to memory to memory DMA operations. If this option is
+ missing, it's assumed that the DMA controller is connected to
+ peripherals, thus it's a per2mem and mem2per.
+
Example:
dma1: dma-controller@f0004000 {
--
2.25.1
next prev parent reply other threads:[~2020-09-14 14:12 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-14 14:09 [PATCH 0/7] dmaengine: add support for sama7g5 based at_xdmac Eugen Hristev
2020-09-14 14:09 ` [PATCH 1/7] dmaengine: at_xdmac: separate register defines into header file Eugen Hristev
2020-09-23 5:07 ` Tudor.Ambarus
2020-09-14 14:09 ` [PATCH 2/7] MAINTAINERS: add dma/at_xdmac_regs.h to XDMAC driver entry Eugen Hristev
2020-09-23 5:12 ` Tudor.Ambarus
2020-09-14 14:09 ` [PATCH 3/7] dt-bindings: dmaengine: at_xdmac: add compatible with microchip,sama7g5 Eugen Hristev
2020-09-22 23:32 ` Rob Herring
2020-09-14 14:09 ` [PATCH 4/7] dmaengine: at_xdmac: adapt perid for mem2mem operations Eugen Hristev
2020-09-23 5:30 ` Tudor.Ambarus
2020-09-23 5:35 ` Tudor.Ambarus
2020-09-14 14:09 ` [PATCH 5/7] dmaengine: at_xdmac: add support for sama7g5 based at_xdmac Eugen Hristev
2020-09-23 7:08 ` Tudor.Ambarus
2020-10-16 6:52 ` Eugen.Hristev
2020-09-14 14:09 ` Eugen Hristev [this message]
2020-09-22 23:33 ` [PATCH 6/7] dt-bindings: dmaengine: at_xdmac: add optional microchip,m2m property Rob Herring
2020-10-16 6:45 ` Eugen.Hristev
2020-10-16 7:06 ` Vinod Koul
2020-10-16 7:09 ` Eugen.Hristev
2020-09-14 14:09 ` [PATCH 7/7] dmaengine: at_xdmac: add AXI priority support and recommended settings Eugen Hristev
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