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

Govind Singh
2018-11-05T13:09:04Z

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@codeaurora.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Tested-by: Brian Norris <briannorris@chromium.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@18000000 {
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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