[PATCH 1/4] dt-bindings: reset: Add PDC reset binding for SDM845 SoCs

Sibi Sankar
2018-07-27T15:28:08Z

Add SDM845 PDC (Power Domain Controller) reset controller binding

Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
---
.../bindings/reset/qcom,pdc-reset.txt | 52 +++++++++++++++++++
include/dt-bindings/reset/qcom,sdm845-pdc.h | 20 +++++++
2 files changed, 72 insertions(+)
create mode 100644 Documentation/devicetree/bindings/reset/qcom,pdc-reset.txt
create mode 100644 include/dt-bindings/reset/qcom,sdm845-pdc.h

diff --git a/Documentation/devicetree/bindings/reset/qcom,pdc-reset.txt b/Documentation/devicetree/bindings/reset/qcom,pdc-reset.txt
new file mode 100644
index 000000000000..85e159962e08
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/qcom,pdc-reset.txt
@@ -0,0 +1,52 @@
+PDC Reset Controller
+======================================
+
+This binding describes a reset-controller found on PDC-Global(Power Domain
+Controller) block for Qualcomm Technologies Inc SDM845 SoCs.
+
+Required properties:
+- compatible:
+ Usage: required
+ Value type: <string>
+ Definition: must be:
+ "qcom,sdm845-pdc-global"
+
+- 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:
+
+pdc_reset: reset-controller@b2e0000 {
+ compatible = "qcom,sdm845-pdc-global";
+ reg = <0xb2e0000 0x20000>;
+ #reset-cells = <1>;
+};
+
+PDC reset clients
+======================================
+
+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-pdc.h>
+
+Example:
+
+modem-pil@4080000 {
+ ...
+
+ resets = <&pdc_reset PDC_MODEM_SYNC_RESET>;
+ reset-names = "pdc_restart";
+
+ ...
+};
diff --git a/include/dt-bindings/reset/qcom,sdm845-pdc.h b/include/dt-bindings/reset/qcom,sdm845-pdc.h
new file mode 100644
index 000000000000..53c37f9c319a
--- /dev/null
+++ b/include/dt-bindings/reset/qcom,sdm845-pdc.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2018 The Linux Foundation. All rights reserved.
+ */
+
+#ifndef _DT_BINDINGS_RESET_PDC_SDM_845_H
+#define _DT_BINDINGS_RESET_PDC_SDM_845_H
+
+#define PDC_APPS_SYNC_RESET 0
+#define PDC_SP_SYNC_RESET 1
+#define PDC_AUDIO_SYNC_RESET 2
+#define PDC_SENSORS_SYNC_RESET 3
+#define PDC_AOP_SYNC_RESET 4
+#define PDC_DEBUG_SYNC_RESET 5
+#define PDC_GPU_SYNC_RESET 6
+#define PDC_DISPLAY_SYNC_RESET 7
+#define PDC_COMPUTE_SYNC_RESET 8
+#define PDC_MODEM_SYNC_RESET 9
+
+#endif
--
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