linux-kernel - [PATCH v4 3/3] dt: bindings: add bindings for wifi iommu node

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Date:   Mon,  5 Nov 2018 18:38:38 +0530
From:   Govind Singh <govinds@...eaurora.org>
To:     briannorris@...omium.org, andy.gross@...aro.org,
        ath10k@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org,
        linux-wireless@...r.kernel.org, robh+dt@...nel.org,
        sboyd@...nel.org, dianders@...omium.org,
        linux-kernel@...r.kernel.org
Cc:     Govind Singh <govinds@...eaurora.org>
Subject: [PATCH v4 3/3] dt: bindings: add bindings for wifi iommu node

WCN3990 wifi module can optionally make use of the IOMMU.
Add binding documentation for phandle to the IOMMU and
the stream id of wifi iommu block.

Signed-off-by: Govind Singh <govinds@...eaurora.org>
Reviewed-by: Rob Herring <robh@...nel.org>
Reviewed-by: Brian Norris <briannorris@...omium.org>
Tested-by: Brian Norris <briannorris@...omium.org>
---
 Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt b/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt
index 55d255c..78fb56a 100644
--- a/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt
+++ b/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt
@@ -66,6 +66,10 @@ Optional properties:
 - <supply-name>-supply: handle to the regulator device tree node
 			   optional "supply-name" are "vdd-0.8-cx-mx",
 			   "vdd-1.8-xo", "vdd-1.3-rfa" and "vdd-3.3-ch0".
+- iommus:
+	Usage: optional
+	Value type: <prop-encoded-array>
+	Definition: A list of phandle and IOMMU specifier pairs.
 
 Example (to supply the calibration data alone):
 
@@ -162,4 +166,5 @@ wifi@...00000 {
 		vdd-1.8-xo-supply = <&vreg_l7a_1p8>;
 		vdd-1.3-rfa-supply = <&vreg_l17a_1p3>;
 		vdd-3.3-ch0-supply = <&vreg_l25a_3p3>;
+		iommus = <&apps_smmu 0x0040 0x1>;
 };
-- 
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