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dt-bindings: nvmem: sec-qfprom: Add bindings for secure qfprom
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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@quicinc.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20230823132744.350618-17-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Komal Bajaj authored and Greg Kroah-Hartman committed Aug 23, 2023
1 parent 9579064 commit fcdc6d7
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55 changes: 55 additions & 0 deletions Documentation/devicetree/bindings/nvmem/qcom,sec-qfprom.yaml
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# 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@quicinc.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, the OS 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:
- |
soc {
#address-cells = <2>;
#size-cells = <2>;
efuse@221c8000 {
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>;
};
};
};

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