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Subject[PATCH v2 1/3] dt-bindings: ath10k: Add wifi-firmware subnode for wifi node
Date
Add a wifi-firmware subnode for the wifi node.
This wifi-firmware subnode is needed for the
targets which do not support TrustZone.

Signed-off-by: Rakesh Pillai <pillair@codeaurora.org>
---
.../devicetree/bindings/net/wireless/qcom,ath10k.txt | 14 ++++++++++++++
1 file changed, 14 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt b/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt
index 71bf91f..65ee68e 100644
--- a/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt
+++ b/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt
@@ -96,6 +96,17 @@ Optional properties:
- qcom,coexist-gpio-pin : gpio pin number information to support coex
which will be used by wifi firmware.

+* Subnodes
+The ath10k wifi node can contain one optional firmware subnode.
+Firmware subnode is needed when the platform does not have TustZone.
+The firmware subnode must have:
+
+- iommus:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: A list of phandle and IOMMU specifier pairs.
+
+
Example (to supply PCI based wifi block details):

In this example, the node is defined as child node of the PCI controller.
@@ -196,4 +207,7 @@ wifi@18000000 {
memory-region = <&wifi_msa_mem>;
iommus = <&apps_smmu 0x0040 0x1>;
qcom,msa-fixed-perm;
+ wifi-firmware {
+ iommus = <&apps_iommu 0xc22 0x1>;
+ };
};
--
2.7.4
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