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dt-bindings: reset: Add AOSS reset bindings for SDM845 SoCs
Add SDM845 AOSS (always on subsystem) reset controller binding
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
authored by
Sibi Sankar
and committed by
Philipp Zabel
b79df1ec
ce397d21
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Documentation/devicetree/bindings/reset/qcom,aoss-reset.txt
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Documentation/devicetree/bindings/reset/qcom,aoss-reset.txt
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Qualcomm AOSS Reset Controller
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======================================
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This binding describes a reset-controller found on AOSS-CC (always on subsystem)
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for Qualcomm SDM845 SoCs.
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Required properties:
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- compatible:
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Usage: required
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Value type: <string>
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Definition: must be:
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"qcom,sdm845-aoss-cc"
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- reg:
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Usage: required
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Value type: <prop-encoded-array>
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Definition: must specify the base address and size of the register
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space.
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- #reset-cells:
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Usage: required
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Value type: <uint>
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Definition: must be 1; cell entry represents the reset index.
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Example:
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aoss_reset: reset-controller@c2a0000 {
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compatible = "qcom,sdm845-aoss-cc";
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reg = <0xc2a0000 0x31000>;
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#reset-cells = <1>;
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};
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Specifying reset lines connected to IP modules
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==============================================
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Device nodes that need access to reset lines should
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specify them as a reset phandle in their corresponding node as
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specified in reset.txt.
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For list of all valid reset indicies see
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<dt-bindings/reset/qcom,sdm845-aoss.h>
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Example:
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modem-pil@4080000 {
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...
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resets = <&aoss_reset AOSS_CC_MSS_RESTART>;
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reset-names = "mss_restart";
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...
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};
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include/dt-bindings/reset/qcom,sdm845-aoss.h
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include/dt-bindings/reset/qcom,sdm845-aoss.h
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2018 The Linux Foundation. All rights reserved.
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*/
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#ifndef _DT_BINDINGS_RESET_AOSS_SDM_845_H
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#define _DT_BINDINGS_RESET_AOSS_SDM_845_H
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#define AOSS_CC_MSS_RESTART 0
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#define AOSS_CC_CAMSS_RESTART 1
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#define AOSS_CC_VENUS_RESTART 2
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#define AOSS_CC_GPU_RESTART 3
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#define AOSS_CC_DISPSS_RESTART 4
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#define AOSS_CC_WCSS_RESTART 5
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#define AOSS_CC_LPASS_RESTART 6
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#endif