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Date: Mon, 22 Aug 2022 16:31:01 +0800 From: "Peng Fan (OSS)" <peng.fan@....nxp.com> To: robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org, shawnguo@...nel.org, s.hauer@...gutronix.de Cc: kernel@...gutronix.de, festevam@...il.com, linux-imx@....com, aisheng.dong@....com, devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, Peng Fan <peng.fan@....com>, Rob Herring <robh@...nel.org> Subject: [PATCH V7 1/6] dt-bindings: soc: add 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. Reviewed-by: Rob Herring <robh@...nel.org> Signed-off-by: Peng Fan <peng.fan@....com> --- .../bindings/soc/imx/fsl,imx93-src.yaml | 96 +++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/imx/fsl,imx93-src.yaml 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..c1cc69b51981 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/imx/fsl,imx93-src.yaml @@ -0,0 +1,96 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/soc/imx/fsl,imx93-src.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NXP i.MX93 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 + + ranges: true + + '#address-cells': + const: 1 + + '#size-cells': + const: 1 + +patternProperties: + "power-domain@[0-9a-f]+$": + + type: object + properties: + compatible: + items: + - const: fsl,imx93-src-slice + + '#power-domain-cells': + const: 0 + + reg: + items: + - description: mix slice register region + - description: mem slice register region + + 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: + - compatible + - '#power-domain-cells' + - reg + +required: + - compatible + - reg + - ranges + - '#address-cells' + - '#size-cells' + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/imx93-clock.h> + + system-controller@...60000 { + compatible = "fsl,imx93-src", "syscon"; + reg = <0x44460000 0x10000>; + #address-cells = <1>; + #size-cells = <1>; + ranges; + + mediamix: power-domain@0 { + compatible = "fsl,imx93-src-slice"; + reg = <0x44462400 0x400>, <0x44465800 0x400>; + #power-domain-cells = <0>; + clocks = <&clk IMX93_CLK_MEDIA_AXI>, + <&clk IMX93_CLK_MEDIA_APB>; + }; + }; -- 2.37.1
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