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SRC supports resets and power gating for mixes. Signed-off-by: Peng Fan --- .../bindings/power/fsl,imx93-src.yaml | 96 +++++++++++++++++++ include/dt-bindings/power/fsl,imx93-power.h | 11 +++ 2 files changed, 107 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/fsl,imx93-src.yaml create mode 100644 include/dt-bindings/power/fsl,imx93-power.h diff --git a/Documentation/devicetree/bindings/power/fsl,imx93-src.yaml b/Documentation/devicetree/bindings/power/fsl,imx93-src.yaml new file mode 100644 index 000000000000..880500a841f7 --- /dev/null +++ b/Documentation/devicetree/bindings/power/fsl,imx93-src.yaml @@ -0,0 +1,96 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/fsl,imx93-src.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NXP i.MX93 System Reset Controller + +maintainers: + - Peng Fan + +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 + + slices: + type: object + description: list of power domains provided by this controller. + + properties: + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + patternProperties: + "power-domain@[0-9]$": + $ref: /schemas/power/power-domain.yaml# + + 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 + - slices + +additionalProperties: false + +examples: + - | + #include + #include + + system-controller@44460000 { + compatible = "fsl,imx93-src", "syscon"; + reg = <0x44460000 0x10000>; + + slices { + #address-cells = <1>; + #size-cells = <0>; + + mediamix: power-domain@0 { + reg = ; + #power-domain-cells = <0>; + clocks = <&clk IMX93_CLK_MEDIA_AXI>, + <&clk IMX93_CLK_MEDIA_APB>; + }; + }; + }; diff --git a/include/dt-bindings/power/fsl,imx93-power.h b/include/dt-bindings/power/fsl,imx93-power.h new file mode 100644 index 000000000000..27fb7df80f93 --- /dev/null +++ b/include/dt-bindings/power/fsl,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