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[V4,04/11] dt-bindings: remoteproc: qcom,sc7280-mss-pil: Update memory-region

Message ID 20230117085840.32356-5-quic_sibis@quicinc.com
State Superseded
Headers show
Series Fix XPU violation during modem metadata authentication | expand

Commit Message

Sibi Sankar Jan. 17, 2023, 8:58 a.m. UTC 
The dynamic memory region used for metadata authentication would still
be a part of the kernel mapping and any access to this region by the
application processor after assigning it to the remote Q6 will result
in a XPU violation. This is fixed by using a no-map carveout instead.
Update the bindings to reflect the addition of the new modem metadata
carveout on SC7280 SoC.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
---

v3:
 * remove double space [Krzysztof]
 * Pickup R-b

v2:
 * Pad commit message to explain bindings break [Krzysztof]
 * Split dt/bindings per SoC  [Krzysztof]

 .../devicetree/bindings/remoteproc/qcom,sc7280-mss-pil.yaml    | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,sc7280-mss-pil.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,sc7280-mss-pil.yaml
index b4de0521a89d..005cb21732af 100644
--- a/Documentation/devicetree/bindings/remoteproc/qcom,sc7280-mss-pil.yaml
+++ b/Documentation/devicetree/bindings/remoteproc/qcom,sc7280-mss-pil.yaml
@@ -95,6 +95,7 @@  properties:
     items:
       - description: MBA reserved region
       - description: modem reserved region
+      - description: metadata reserved region
 
   firmware-name:
     $ref: /schemas/types.yaml#/definitions/string-array
@@ -240,7 +241,7 @@  examples:
                         <&rpmhpd SC7280_MSS>;
         power-domain-names = "cx", "mss";
 
-        memory-region = <&mba_mem>, <&mpss_mem>;
+        memory-region = <&mba_mem>, <&mpss_mem>, <&mdata_mem>;
 
         qcom,qmp = <&aoss_qmp>;