[PATCH v3 1/7] dt-bindings: reset: Add AOSS reset bindings for SDM845 SoCs
From: Sibi S <hidden>
Date: 2018-03-14 09:22:23
Also in:
linux-arm-msm, linux-remoteproc, lkml
Subsystem:
arm/qualcomm mailing list, open firmware and flattened device tree bindings, reset controller framework, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Philipp Zabel, Linus Torvalds
Add SDM845 AOSS (always on subsystem) reset controller binding Signed-off-by: Sibi S <redacted> --- .../devicetree/bindings/reset/qcom,aoss-reset.txt | 54 ++++++++++++++++++++++ include/dt-bindings/reset/qcom,sdm845-aoss.h | 17 +++++++ 2 files changed, 71 insertions(+) create mode 100644 Documentation/devicetree/bindings/reset/qcom,aoss-reset.txt create mode 100644 include/dt-bindings/reset/qcom,sdm845-aoss.h
diff --git a/Documentation/devicetree/bindings/reset/qcom,aoss-reset.txt b/Documentation/devicetree/bindings/reset/qcom,aoss-reset.txt
new file mode 100644
index 0000000..04dca76
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/qcom,aoss-reset.txt@@ -0,0 +1,54 @@ +Qualcomm AOSS Reset Controller +====================================== + +This binding describes a reset-controller found on AOSS (always on subsystem) +for Qualcomm SDM845 SoCs. + +Required properties: +- compatible: + Usage: required + Value type: <string> + Definition: must be: + "qcom,sdm845-aoss-reset" + +- reg: + Usage: required + Value type: <prop-encoded-array> + Definition: must specify the base address and size of the register + space. + + +- #reset-cells: + Usage: required + Value type: <uint> + Definition: must be 1; cell entry represents the reset index. + +example: + +aoss_reset: qcom,reset-controller@b2e0100 { + compatible = "qcom,sdm845-aoss-reset"; + reg = <0xc2b0000 0x20004>; + #reset-cells = <1>; +}; + + +Specifying reset lines connected to IP modules +============================================== + +Device nodes that need access to reset lines should +specify them as a reset phandle in their corresponding node as +specified in reset.txt. + +For list of all valid reset indicies see +<dt-bindings/reset/qcom,sdm845-aoss.h> + +Example: + +modem-pil@4080000 { + ... + + resets = <&aoss_reset AOSS_CC_MSS_RESTART>; + reset-names = "mss_restart"; + + ... +};
diff --git a/include/dt-bindings/reset/qcom,sdm845-aoss.h b/include/dt-bindings/reset/qcom,sdm845-aoss.h
new file mode 100644
index 0000000..e9b38fc
--- /dev/null
+++ b/include/dt-bindings/reset/qcom,sdm845-aoss.h@@ -0,0 +1,17 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2018 The Linux Foundation. All rights reserved. + */ + +#ifndef _DT_BINDINGS_RESET_AOSS_SDM_845_H +#define _DT_BINDINGS_RESET_AOSS_SDM_845_H + +#define AOSS_CC_MSS_RESTART 0 +#define AOSS_CC_CAMSS_RESTART 1 +#define AOSS_CC_VENUS_RESTART 2 +#define AOSS_CC_GPU_RESTART 3 +#define AOSS_CC_DISPSS_RESTART 4 +#define AOSS_CC_WCSS_RESTART 5 +#define AOSS_CC_LPASS_RESTART 6 + +#endif
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