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Message-Id: <20220523113029.842753-2-peng.fan@oss.nxp.com>
Date: Mon, 23 May 2022 19:30:23 +0800
From: "Peng Fan (OSS)" <peng.fan@....nxp.com>
To: robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
sboyd@...nel.org, mturquette@...libre.com, shawnguo@...nel.org,
s.hauer@...gutronix.de
Cc: aisheng.dong@....com, l.stach@...gutronix.de,
kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, Peng Fan <peng.fan@....com>
Subject: [PATCH 1/7] dt-bindings: soc: add bindings for i.MX93 SRC
From: Peng Fan <peng.fan@....com>
Add bindings for i.MX93 System Reset Controller(SRC). SRC supports
resets and power gating for mixes.
Signed-off-by: Peng Fan <peng.fan@....com>
---
.../bindings/soc/imx/fsl,imx93-src.yaml | 88 +++++++++++++++++++
include/dt-bindings/power/imx93-power.h | 11 +++
2 files changed, 99 insertions(+)
create mode 100644 Documentation/devicetree/bindings/soc/imx/fsl,imx93-src.yaml
create mode 100644 include/dt-bindings/power/imx93-power.h
diff --git a/Documentation/devicetree/bindings/soc/imx/fsl,imx93-src.yaml b/Documentation/devicetree/bindings/soc/imx/fsl,imx93-src.yaml
new file mode 100644
index 000000000000..d45c1458b9c1
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/imx/fsl,imx93-src.yaml
@@ -0,0 +1,88 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/imx/fsl,imx93-src.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP i.MX9 System Reset Controller
+
+maintainers:
+ - Peng Fan <peng.fan@....com>
+
+description: |
+ The System Reset Controller (SRC) is responsible for the generation of
+ all the system reset signals and boot argument latching.
+
+ Its main functions are as follows,
+ - Deals with all global system reset sources from other modules,
+ and generates global system reset.
+ - Responsible for power gating of MIXs (Slices) and their memory
+ low power control.
+
+properties:
+ compatible:
+ items:
+ - const: fsl,imx93-src
+ - const: syscon
+
+ reg:
+ maxItems: 1
+
+ slice:
+ type: object
+ description: list of power domains provided by this controller.
+
+ patternProperties:
+ "power-domain@[0-9]$":
+ type: object
+ properties:
+
+ '#power-domain-cells':
+ const: 0
+
+ reg:
+ description: |
+ Power domain index. Valid values are defined in
+ include/dt-bindings/power/imx93-power.h for fsl,imx93-src
+ maxItems: 1
+
+ clocks:
+ description: |
+ A number of phandles to clocks that need to be enabled
+ during domain power-up sequencing to ensure reset
+ propagation into devices located inside this power domain.
+ minItems: 1
+ maxItems: 5
+
+ required:
+ - '#power-domain-cells'
+ - reg
+
+required:
+ - compatible
+ - reg
+ - slice
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/imx93-clock.h>
+ #include <dt-bindings/power/imx93-power.h>
+
+ src@...60000 {
+ compatible = "fsl,imx93-src", "syscon";
+ reg = <0x44460000 0x10000>;
+
+ slice {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ mediamix: power-domain@0 {
+ reg = <IMX93_POWER_DOMAIN_MEDIAMIX>;
+ #power-domain-cells = <0>;
+ clocks = <&clk IMX93_CLK_MEDIA_AXI>,
+ <&clk IMX93_CLK_MEDIA_APB>;
+ };
+ };
+ };
diff --git a/include/dt-bindings/power/imx93-power.h b/include/dt-bindings/power/imx93-power.h
new file mode 100644
index 000000000000..27fb7df80f93
--- /dev/null
+++ b/include/dt-bindings/power/imx93-power.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
+/*
+ * Copyright 2022 NXP
+ */
+
+#ifndef __DT_BINDINGS_IMX93_POWER_H__
+#define __DT_BINDINGS_IMX93_POWER_H__
+
+#define IMX93_POWER_DOMAIN_MEDIAMIX 0
+
+#endif
--
2.25.1
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