[PATCH v3 1/2] dt-bindings: interrupt-controller: Add support for ASPEED AST27XX INTC

[Kevin Chen]

> > The ASPEED AST27XX interrupt controller(INTC) contain second level and
> > third level interrupt controller.
> >
> > INTC0:
> > The second level INTC, which used to assert GIC(#192~#197) if
> > interrupt in INTC1 asserted. There are 6 GIC interrupt
> > number(#192~#197) used in one INTC0.
> >
> > INTC1_x:
> > The third level INTC, which used to assert GIC(#192~#197) if interrupt
> > in
> > INTC1 asserted. There are 6 GIC interrupt number(#192~#197) used in one
> INTC0.
> >
> > Signed-off-by: Kevin Chen <kevin_chen at aspeedtech.com>
> > ---
> >  .../aspeed,ast2700-intc.yaml                  | 87
> +++++++++++++++++++
> >  1 file changed, 87 insertions(+)
> >  create mode 100644
> > Documentation/devicetree/bindings/interrupt-controller/aspeed,ast2700-
> > intc.yaml
> >
> > diff --git
> > a/Documentation/devicetree/bindings/interrupt-controller/aspeed,ast270
> > 0-intc.yaml
> > b/Documentation/devicetree/bindings/interrupt-controller/aspeed,ast270
> > 0-intc.yaml
> > new file mode 100644
> > index 000000000000..650a1f6e1177
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/interrupt-controller/aspeed,as
> > +++ t2700-intc.yaml
> > @@ -0,0 +1,87 @@
> > +# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause %YAML 1.2
> > +---
> > +$id:
> > +http://devicetree.org/schemas/interrupt-controller/aspeed,ast2700-int
> > +c.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Aspeed AST2700 Interrupt Controller
> > +
> > +description:
> > +  This interrupt controller hardware is second level interrupt
> > +controller that
> > +  is hooked to a parent interrupt controller. It's useful to combine
> > +multiple
> > +  interrupt sources into 1 interrupt to parent interrupt controller.
> > +
> > +maintainers:
> > +  - Kevin Chen <kevin_chen at aspeedtech.com>
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - aspeed,ast2700-intc-ic
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  interrupt-controller: true
> > +
> > +  '#interrupt-cells':
> > +    const: 2
> 
> Describe the meaning of the cells here.
I would change to the following code
+  '#interrupt-cells':
+    const: 2
+    description:
+      The first cell is the IRQ number, the second cell is the trigger
+      type as defined in interrupt.txt in this directory.
> 
> > +
> > +  interrupts:
> > +    maxItems: 10
> > +    description:
> 
> You need '|' to preserve formatting.
OK. Thanks

> 
> > +      Depend to which INTC0 or INTC1 used.
> > +      INTC0 and INTC1 are two kinds of interrupt controller with enable
> and raw
> > +      status registers for use.
> > +      INTC0 is used to assert GIC if interrupt in INTC1 asserted.
> > +      INTC1 is used to assert INTC0 if interrupt of modules asserted.
> > +      +-----+   +-------+     +---------+---module0
> > +      | GIC |---| INTC0 |--+--| INTC1_0 |---module2
> > +      |     |   |       |  |  |         |---...
> > +      +-----+   +-------+  |  +---------+---module31
> > +                           |
> > +                           |   +---------+---module0
> > +                           +---| INTC1_1 |---module2
> > +                           |   |         |---...
> > +                           |   +---------+---module31
> > +                          ...
> > +                           |   +---------+---module0
> > +                           +---| INTC1_5 |---module2
> > +                               |         |---...
> > +                               +---------+---module31
> > +
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - interrupt-controller
> > +  - '#interrupt-cells'
> > +  - interrupts
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> > +
> > +    bus {
> > +        #address-cells = <2>;
> > +        #size-cells = <2>;
> > +
> > +        interrupt-controller at 12101b00 {
> > +            compatible = "aspeed,ast2700-intc-ic";
> > +            reg = <0 0x12101b00 0 0x10>;
> > +            #interrupt-cells = <2>;
> > +            interrupt-controller;
> > +            interrupts = <GIC_SPI 192 IRQ_TYPE_LEVEL_HIGH>,
> > +                         <GIC_SPI 193 IRQ_TYPE_LEVEL_HIGH>,
> > +                         <GIC_SPI 194 IRQ_TYPE_LEVEL_HIGH>,
> > +                         <GIC_SPI 195 IRQ_TYPE_LEVEL_HIGH>,
> > +                         <GIC_SPI 196 IRQ_TYPE_LEVEL_HIGH>,
> > +                         <GIC_SPI 197 IRQ_TYPE_LEVEL_HIGH>,
> > +                         <GIC_SPI 198 IRQ_TYPE_LEVEL_HIGH>,
> > +                         <GIC_SPI 199 IRQ_TYPE_LEVEL_HIGH>,
> > +                         <GIC_SPI 200 IRQ_TYPE_LEVEL_HIGH>,
> > +                         <GIC_SPI 201 IRQ_TYPE_LEVEL_HIGH>;
> > +        };
> > +    };
> > --
> > 2.34.1
> >