linux-kernel - [PATCH v3 2/2] PCI: xilinx-nwl: Add optional "dma-coherent" property

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Message-ID: <20210222084732.21521-2-bharat.kumar.gogada@xilinx.com>
Date:   Mon, 22 Feb 2021 14:17:32 +0530
From:   Bharat Kumar Gogada <bharat.kumar.gogada@...inx.com>
To:     <linux-pci@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <bhelgaas@...gle.com>,
        Bharat Kumar Gogada <bharat.kumar.gogada@...inx.com>
Subject: [PATCH v3 2/2] PCI: xilinx-nwl: Add optional "dma-coherent" property

Add optional dma-coherent property to support coherent PCIe DMA traffic.

Signed-off-by: Bharat Kumar Gogada <bharat.kumar.gogada@...inx.com>
---
 Documentation/devicetree/bindings/pci/xilinx-nwl-pcie.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/xilinx-nwl-pcie.txt b/Documentation/devicetree/bindings/pci/xilinx-nwl-pcie.txt
index 01bf7fdf4c19..2d677e90a7e2 100644
--- a/Documentation/devicetree/bindings/pci/xilinx-nwl-pcie.txt
+++ b/Documentation/devicetree/bindings/pci/xilinx-nwl-pcie.txt
@@ -33,6 +33,8 @@ Required properties:
 	- #address-cells: specifies the number of cells needed to encode an
 		address. The value must be 0.
 
+Optional properties:
+- dma-coherent: present if DMA operations are coherent
 
 Example:
 ++++++++
-- 
2.17.1