On Thu, Jun 09, 2022 at 08:50:54PM +0800, Peng Fan (OSS) wrote: > From: Peng Fan <peng.fan@xxxxxxx> > > Add bindings for i.MX93 System Reset Controller(SRC). SRC supports > resets and power gating for mixes. > > Signed-off-by: Peng Fan <peng.fan@xxxxxxx> > --- > .../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 <peng.fan@xxxxxxx> > + > +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: power-controller But if there aren't any other child nodes for the SRC, then why do you need this level at all? If there are others, then your binding is incomplete. > + 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 <dt-bindings/clock/imx93-clock.h> > + #include <dt-bindings/power/fsl,imx93-power.h> > + > + system-controller@44460000 { > + compatible = "fsl,imx93-src", "syscon"; > + reg = <0x44460000 0x10000>; > + > + slices { > + #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/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 > >
