[v4,3/3] dt: bindings: add bindings for wifi iommu node
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Message ID 1541423318-19312-4-git-send-email-govinds@codeaurora.org
State New
Headers show
Series
  • Enable ath10k wcn3990 wifi driver support on sdm845
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Commit Message

Govind Singh Nov. 5, 2018, 1:08 p.m. UTC
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(+)

Patch
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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>;
 };