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|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/firmware/qcom,scm.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: QCOM Secure Channel Manager (SCM)
description: |
Qualcomm processors include an interface to communicate to the secure firmware.
This interface allows for clients to request different types of actions.
These can include CPU power up/down, HDCP requests, loading of firmware,
and other assorted actions.
maintainers:
- Bjorn Andersson <bjorn.andersson@linaro.org>
- Robert Marko <robimarko@gmail.com>
- Guru Das Srinagesh <quic_gurus@quicinc.com>
properties:
compatible:
items:
- enum:
- qcom,scm-apq8064
- qcom,scm-apq8084
- qcom,scm-ipq4019
- qcom,scm-ipq6018
- qcom,scm-ipq806x
- qcom,scm-ipq8074
- qcom,scm-mdm9607
- qcom,scm-msm8226
- qcom,scm-msm8660
- qcom,scm-msm8916
- qcom,scm-msm8953
- qcom,scm-msm8960
- qcom,scm-msm8974
- qcom,scm-msm8976
- qcom,scm-msm8994
- qcom,scm-msm8996
- qcom,scm-msm8998
- qcom,scm-qdu1000
- qcom,scm-sa8775p
- qcom,scm-sc7180
- qcom,scm-sc7280
- qcom,scm-sc8280xp
- qcom,scm-sdm670
- qcom,scm-sdm845
- qcom,scm-sdx55
- qcom,scm-sdx65
- qcom,scm-sm6115
- qcom,scm-sm6125
- qcom,scm-sm6350
- qcom,scm-sm6375
- qcom,scm-sm8150
- qcom,scm-sm8250
- qcom,scm-sm8350
- qcom,scm-sm8450
- qcom,scm-sm8550
- qcom,scm-qcs404
- const: qcom,scm
clocks:
minItems: 1
maxItems: 3
clock-names:
minItems: 1
maxItems: 3
interconnects:
maxItems: 1
interconnect-names:
maxItems: 1
'#reset-cells':
const: 1
interrupts:
description:
The wait-queue interrupt that firmware raises as part of handshake
protocol to handle sleeping SCM calls.
maxItems: 1
qcom,dload-mode:
$ref: /schemas/types.yaml#/definitions/phandle-array
items:
- items:
- description: phandle to TCSR hardware block
- description: offset of the download mode control register
description: TCSR hardware block
allOf:
# Clocks
- if:
properties:
compatible:
contains:
enum:
- qcom,scm-apq8064
- qcom,scm-apq8084
- qcom,scm-mdm9607
- qcom,scm-msm8226
- qcom,scm-msm8660
- qcom,scm-msm8916
- qcom,scm-msm8953
- qcom,scm-msm8960
- qcom,scm-msm8974
- qcom,scm-msm8976
- qcom,scm-sm6375
then:
required:
- clocks
- clock-names
else:
properties:
clock-names: false
clocks: false
- if:
properties:
compatible:
contains:
enum:
- qcom,scm-apq8064
- qcom,scm-msm8660
- qcom,scm-msm8960
- qcom,scm-sm6375
then:
properties:
clock-names:
items:
- const: core
clocks:
maxItems: 1
- if:
properties:
compatible:
contains:
enum:
- qcom,scm-apq8084
- qcom,scm-mdm9607
- qcom,scm-msm8226
- qcom,scm-msm8916
- qcom,scm-msm8953
- qcom,scm-msm8974
- qcom,scm-msm8976
then:
properties:
clock-names:
items:
- const: core
- const: bus
- const: iface
clocks:
minItems: 3
maxItems: 3
# Interconnects
- if:
not:
properties:
compatible:
contains:
enum:
- qcom,scm-sm8450
- qcom,scm-sm8550
then:
properties:
interconnects: false
# Interrupts
- if:
not:
properties:
compatible:
contains:
enum:
- qcom,scm-sm8450
- qcom,scm-sm8550
then:
properties:
interrupts: false
required:
- compatible
additionalProperties: false
examples:
- |
#include <dt-bindings/clock/qcom,gcc-msm8916.h>
firmware {
scm {
compatible = "qcom,scm-msm8916", "qcom,scm";
clocks = <&gcc GCC_CRYPTO_CLK>,
<&gcc GCC_CRYPTO_AXI_CLK>,
<&gcc GCC_CRYPTO_AHB_CLK>;
clock-names = "core", "bus", "iface";
};
};
|
