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Message-ID: <20230724082946.7441-2-quic_kbajaj@quicinc.com>
Date: Mon, 24 Jul 2023 13:59:45 +0530
From: Komal Bajaj <quic_kbajaj@...cinc.com>
To: <agross@...nel.org>, <andersson@...nel.org>,
<konrad.dybcio@...aro.org>, <srinivas.kandagatla@...aro.org>,
<robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
<conor+dt@...nel.org>
CC: <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>,
Komal Bajaj <quic_kbajaj@...cinc.com>
Subject: [PATCH v5 1/2] dt-bindings: nvmem: sec-qfprom: Add bindings for secure qfprom
This patch adds bindings for secure qfprom found in QCOM SOCs.
Secure QFPROM driver is based on simple nvmem framework.
Signed-off-by: Komal Bajaj <quic_kbajaj@...cinc.com>
---
.../bindings/nvmem/qcom,sec-qfprom.yaml | 58 +++++++++++++++++++
1 file changed, 58 insertions(+)
create mode 100644 Documentation/devicetree/bindings/nvmem/qcom,sec-qfprom.yaml
diff --git a/Documentation/devicetree/bindings/nvmem/qcom,sec-qfprom.yaml b/Documentation/devicetree/bindings/nvmem/qcom,sec-qfprom.yaml
new file mode 100644
index 000000000000..1425ced36fdf
--- /dev/null
+++ b/Documentation/devicetree/bindings/nvmem/qcom,sec-qfprom.yaml
@@ -0,0 +1,58 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/nvmem/qcom,sec-qfprom.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Technologies Inc, Secure QFPROM Efuse
+
+maintainers:
+ - Komal Bajaj <quic_kbajaj@...cinc.com>
+
+description: |
+ For some of the Qualcomm SoC's, it is possible that
+ the qfprom region is protected from non-secure access.
+ In such situations, linux will have to use secure calls
+ to read the region.
+
+allOf:
+ - $ref: nvmem.yaml#
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - qcom,qdu1000-sec-qfprom
+ - const: qcom,sec-qfprom
+
+ reg:
+ items:
+ - description: The secure qfprom corrected region.
+
+required:
+ - compatible
+ - reg
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/qcom,gcc-sc7180.h>
+
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ efuse@...c8000 {
+ compatible = "qcom,qdu1000-sec-qfprom", "qcom,sec-qfprom";
+ reg = <0 0x221c8000 0 0x1000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ multi_chan_ddr: multi-chan-ddr@12b {
+ reg = <0x12b 0x1>;
+ bits = <0 2>;
+ };
+ };
+ };
+
--
2.40.1
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