dt: bindings: ath10k: 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@codeaurora.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Tested-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt b/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt
index 51fcf93d743b75b043a430aa76d2b5a7349aa383..09ae59470f642213636155396b1000774b1c45da 100644 (file)
--- a/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt
+++ b/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt
@@ -71,6 +71,10 @@ Optional properties:
        Value type: <phandle>
        Definition: reference to the reserved-memory for the msa region
                    used by the wifi firmware running in Q6.
+- iommus:
+       Usage: optional
+       Value type: <prop-encoded-array>
+       Definition: A list of phandle and IOMMU specifier pairs.
 
 Example (to supply the calibration data alone):
 
@@ -168,4 +172,5 @@ wifi@18000000 {
                vdd-1.3-rfa-supply = <&vreg_l17a_1p3>;
                vdd-3.3-ch0-supply = <&vreg_l25a_3p3>;
                memory-region = <&wifi_msa_mem>;
+               iommus = <&apps_smmu 0x0040 0x1>;
 };