dt-bindings: misc: add property to support non-secure DSP

Add property to set DSP domain as non-secure.

ADSP/MDSP/SDSP are by default secured, where as CDSP can be either be
secured/unsecured.
non-secured Compute DSP would allow users to load unsigned process
and run hexagon instructions, but limiting access to secured hardware
within the DSP.

Based on this flag device nodes for secured and unsecured are created.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jeya R <jeyr@codeaurora.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20220214161002.6831-5-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt b/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt
index 2a1827ab50d2b444aac9e93afafb6e7363b1bfe5..f9a01e2b4c96dc1098b82253e5b2e1e30358d780 100644 (file)
--- a/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt
+++ b/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt
@@ -17,6 +17,11 @@ other tasks.
        Definition: should specify the dsp domain name this fastrpc
        corresponds to. must be one of this: "adsp", "mdsp", "sdsp", "cdsp"
 
+- qcom,non-secure-domain:
+       Usage: required
+       Value type: <boolean>
+       Definition: Property to specify that dsp domain is non-secure.
+
 - #address-cells
        Usage: required
        Value type: <u32>