linux-kernel - [PATCH 3/4] dt-bindings: remoteproc: qcom: q6v5: Update memory region requirements

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Date:   Tue, 13 Dec 2022 19:37:23 +0530
From:   Sibi Sankar <quic_sibis@...cinc.com>
To:     <andersson@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <robh+dt@...nel.org>, <manivannan.sadhasivam@...aro.org>
CC:     <agross@...nel.org>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <konrad.dybcio@...ainline.org>, <amit.pundir@...aro.org>,
        <regressions@...mhuis.info>, <sumit.semwal@...aro.org>,
        <will@...nel.org>, <catalin.marinas@....com>,
        <robin.murphy@....com>, Sibi Sankar <quic_sibis@...cinc.com>
Subject: [PATCH 3/4] dt-bindings: remoteproc: qcom: q6v5: Update memory region requirements

Update the bindings to reflect the addition of the new modem metadata
carveout on SoCs that use memory protection before transferring control
to the remote Q6.

Signed-off-by: Sibi Sankar <quic_sibis@...cinc.com>
---

https://lore.kernel.org/all/20220511161602.117772-7-sireeshkodali1@gmail.com/
Sireesh had started the conversion to yaml a while back. I'll take over
the conversion from v2.

 .../bindings/remoteproc/qcom,q6v5.txt         | 29 +++++++++++++++++--
 1 file changed, 26 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,q6v5.txt b/Documentation/devicetree/bindings/remoteproc/qcom,q6v5.txt
index d0ebd16ee0e1..89772d026363 100644
--- a/Documentation/devicetree/bindings/remoteproc/qcom,q6v5.txt
+++ b/Documentation/devicetree/bindings/remoteproc/qcom,q6v5.txt
@@ -104,8 +104,24 @@ on the Qualcomm Hexagon core.
 		    must be "mss_restart", "pdc_reset" for the modem
 		    sub-system on SDM845 SoCs
 
-For devices where the mba and mpss sub-nodes are not specified, mba/mpss region
-should be referenced as follows:
+For devices with the compatible strings below and where the mba, mpss and
+metadata sub-nodes are not specified, mba/mpss/mdata region should be
+referenced as follows:
+  "qcom,msm8996-mss-pil"
+  "qcom,msm8998-mss-pil"
+  "qcom,sdm845-mss-pil"
+- memory-region:
+	Usage: required
+	Value type: <phandle>
+	Definition: reference to mba, mpss and metadata reserved-memory regions.
+
+For devices with the compatible strings below and where the mba and mpss
+sub-nodes are not specified, mba/mpss region should be referenced as follows:
+  "qcom,q6v5-pil",
+  "qcom,ipq8074-wcss-pil"
+  "qcom,qcs404-wcss-pil"
+  "qcom,msm8916-mss-pil",
+  "qcom,msm8974-mss-pil"
 - memory-region:
 	Usage: required
 	Value type: <phandle>
@@ -198,7 +214,14 @@ on platforms which do not have TrustZone.
 
 = SUBNODES:
 The Hexagon node must contain two subnodes, named "mba" and "mpss" representing
-the memory regions used by the Hexagon firmware. Each sub-node must contain:
+the memory regions used by the Hexagon firmware. For devices with the compatible
+string below, an additional third subnode named "metadata" representing the modem
+metadata memory region should also be present.
+  "qcom,msm8996-mss-pil"
+  "qcom,msm8998-mss-pil"
+  "qcom,sdm845-mss-pil"
+
+Each sub-node must contain:
 
 - memory-region:
 	Usage: required
-- 
2.17.1