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Message-Id: <20190110221903.3990-2-robh@kernel.org>
Date: Thu, 10 Jan 2019 16:18:59 -0600
From: Rob Herring <robh@...nel.org>
To: devicetree@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
Jason Cooper <jason@...edaemon.net>,
Marc Zyngier <marc.zyngier@....com>
Subject: [PATCH] dt-bindings: interrupt-controller: Convert ARM GIC to json-schema
Convert the ARM GIC binding document to DT schema format using
json-schema.
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Jason Cooper <jason@...edaemon.net>
Cc: Marc Zyngier <marc.zyngier@....com>
Signed-off-by: Rob Herring <robh@...nel.org>
---
.../bindings/interrupt-controller/arm,gic.txt | 171 --------------
.../interrupt-controller/arm,gic.yaml | 223 ++++++++++++++++++
2 files changed, 223 insertions(+), 171 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt
create mode 100644 Documentation/devicetree/bindings/interrupt-controller/arm,gic.yaml
diff --git a/Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt b/Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt
deleted file mode 100644
index 2f3244648646..000000000000
--- a/Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt
+++ /dev/null
@@ -1,171 +0,0 @@
-* ARM Generic Interrupt Controller
-
-ARM SMP cores are often associated with a GIC, providing per processor
-interrupts (PPI), shared processor interrupts (SPI) and software
-generated interrupts (SGI).
-
-Primary GIC is attached directly to the CPU and typically has PPIs and SGIs.
-Secondary GICs are cascaded into the upward interrupt controller and do not
-have PPIs or SGIs.
-
-Main node required properties:
-
-- compatible : should be one of:
- "arm,arm1176jzf-devchip-gic"
- "arm,arm11mp-gic"
- "arm,cortex-a15-gic"
- "arm,cortex-a7-gic"
- "arm,cortex-a9-gic"
- "arm,eb11mp-gic"
- "arm,gic-400"
- "arm,pl390"
- "arm,tc11mp-gic"
- "brcm,brahma-b15-gic"
- "nvidia,tegra210-agic"
- "qcom,msm-8660-qgic"
- "qcom,msm-qgic2"
-- interrupt-controller : Identifies the node as an interrupt controller
-- #interrupt-cells : Specifies the number of cells needed to encode an
- interrupt source. The type shall be a <u32> and the value shall be 3.
-
- The 1st cell is the interrupt type; 0 for SPI interrupts, 1 for PPI
- interrupts.
-
- The 2nd cell contains the interrupt number for the interrupt type.
- SPI interrupts are in the range [0-987]. PPI interrupts are in the
- range [0-15].
-
- The 3rd cell is the flags, encoded as follows:
- bits[3:0] trigger type and level flags.
- 1 = low-to-high edge triggered
- 2 = high-to-low edge triggered (invalid for SPIs)
- 4 = active high level-sensitive
- 8 = active low level-sensitive (invalid for SPIs).
- bits[15:8] PPI interrupt cpu mask. Each bit corresponds to each of
- the 8 possible cpus attached to the GIC. A bit set to '1' indicated
- the interrupt is wired to that CPU. Only valid for PPI interrupts.
- Also note that the configurability of PPI interrupts is IMPLEMENTATION
- DEFINED and as such not guaranteed to be present (most SoC available
- in 2014 seem to ignore the setting of this flag and use the hardware
- default value).
-
-- reg : Specifies base physical address(s) and size of the GIC registers. The
- first region is the GIC distributor register base and size. The 2nd region is
- the GIC cpu interface register base and size.
-
-Optional
-- interrupts : Interrupt source of the parent interrupt controller on
- secondary GICs, or VGIC maintenance interrupt on primary GIC (see
- below).
-
-- cpu-offset : per-cpu offset within the distributor and cpu interface
- regions, used when the GIC doesn't have banked registers. The offset is
- cpu-offset * cpu-nr.
-
-- clocks : List of phandle and clock-specific pairs, one for each entry
- in clock-names.
-- clock-names : List of names for the GIC clock input(s). Valid clock names
- depend on the GIC variant:
- "ic_clk" (for "arm,arm11mp-gic")
- "PERIPHCLKEN" (for "arm,cortex-a15-gic")
- "PERIPHCLK", "PERIPHCLKEN" (for "arm,cortex-a9-gic")
- "clk" (for "arm,gic-400" and "nvidia,tegra210")
- "gclk" (for "arm,pl390")
-
-- power-domains : A phandle and PM domain specifier as defined by bindings of
- the power controller specified by phandle, used when the GIC
- is part of a Power or Clock Domain.
-
-
-Example:
-
- intc: interrupt-controller@...11000 {
- compatible = "arm,cortex-a9-gic";
- #interrupt-cells = <3>;
- #address-cells = <1>;
- interrupt-controller;
- reg = <0xfff11000 0x1000>,
- <0xfff10100 0x100>;
- };
-
-
-* GIC virtualization extensions (VGIC)
-
-For ARM cores that support the virtualization extensions, additional
-properties must be described (they only exist if the GIC is the
-primary interrupt controller).
-
-Required properties:
-
-- reg : Additional regions specifying the base physical address and
- size of the VGIC registers. The first additional region is the GIC
- virtual interface control register base and size. The 2nd additional
- region is the GIC virtual cpu interface register base and size.
-
-- interrupts : VGIC maintenance interrupt.
-
-Example:
-
- interrupt-controller@...01000 {
- compatible = "arm,cortex-a15-gic";
- #interrupt-cells = <3>;
- interrupt-controller;
- reg = <0x2c001000 0x1000>,
- <0x2c002000 0x2000>,
- <0x2c004000 0x2000>,
- <0x2c006000 0x2000>;
- interrupts = <1 9 0xf04>;
- };
-
-
-* GICv2m extension for MSI/MSI-x support (Optional)
-
-Certain revisions of GIC-400 supports MSI/MSI-x via V2M register frame(s).
-This is enabled by specifying v2m sub-node(s).
-
-Required properties:
-
-- compatible : The value here should contain "arm,gic-v2m-frame".
-
-- msi-controller : Identifies the node as an MSI controller.
-
-- reg : GICv2m MSI interface register base and size
-
-Optional properties:
-
-- arm,msi-base-spi : When the MSI_TYPER register contains an incorrect
- value, this property should contain the SPI base of
- the MSI frame, overriding the HW value.
-
-- arm,msi-num-spis : When the MSI_TYPER register contains an incorrect
- value, this property should contain the number of
- SPIs assigned to the frame, overriding the HW value.
-
-Example:
-
- interrupt-controller@...01000 {
- compatible = "arm,gic-400";
- #interrupt-cells = <3>;
- #address-cells = <2>;
- #size-cells = <2>;
- interrupt-controller;
- interrupts = <1 8 0xf04>;
- ranges = <0 0 0 0xe1100000 0 0x100000>;
- reg = <0x0 0xe1110000 0 0x01000>,
- <0x0 0xe112f000 0 0x02000>,
- <0x0 0xe1140000 0 0x10000>,
- <0x0 0xe1160000 0 0x10000>;
- v2m0: v2m@...0 {
- compatible = "arm,gic-v2m-frame";
- msi-controller;
- reg = <0x0 0x80000 0 0x1000>;
- };
-
- ....
-
- v2mN: v2m@...0 {
- compatible = "arm,gic-v2m-frame";
- msi-controller;
- reg = <0x0 0x90000 0 0x1000>;
- };
- };
diff --git a/Documentation/devicetree/bindings/interrupt-controller/arm,gic.yaml b/Documentation/devicetree/bindings/interrupt-controller/arm,gic.yaml
new file mode 100644
index 000000000000..758fbd7128e7
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/arm,gic.yaml
@@ -0,0 +1,223 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/arm,gic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ARM Generic Interrupt Controller v1 and v2
+
+maintainers:
+ - Marc Zyngier <marc.zyngier@....com>
+
+description: |+
+ ARM SMP cores are often associated with a GIC, providing per processor
+ interrupts (PPI), shared processor interrupts (SPI) and software
+ generated interrupts (SGI).
+
+ Primary GIC is attached directly to the CPU and typically has PPIs and SGIs.
+ Secondary GICs are cascaded into the upward interrupt controller and do not
+ have PPIs or SGIs.
+
+allOf:
+ - $ref: /schemas/interrupt-controller.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - enum:
+ - arm,arm11mp-gic
+ - arm,cortex-a15-gic
+ - arm,cortex-a7-gic
+ - arm,cortex-a5-gic
+ - arm,cortex-a9-gic
+ - arm,eb11mp-gic
+ - arm,gic-400
+ - arm,pl390
+ - arm,tc11mp-gic
+ - nvidia,tegra210-agic
+ - qcom,msm-8660-qgic
+ - qcom,msm-qgic2
+
+ - items:
+ - const: arm,arm1176jzf-devchip-gic
+ - const: arm,arm11mp-gic
+
+ - items:
+ - const: brcm,brahma-b15-gic
+ - const: arm,cortex-a15-gic
+
+ interrupt-controller: true
+
+ "#address-cells":
+ enum: [ 0, 1 ]
+ "#size-cells":
+ const: 1
+
+ "#interrupt-cells":
+ const: 3
+ description: |
+ The 1st cell is the interrupt type; 0 for SPI interrupts, 1 for PPI
+ interrupts.
+
+ The 2nd cell contains the interrupt number for the interrupt type.
+ SPI interrupts are in the range [0-987]. PPI interrupts are in the
+ range [0-15].
+
+ The 3rd cell is the flags, encoded as follows:
+ bits[3:0] trigger type and level flags.
+ 1 = low-to-high edge triggered
+ 2 = high-to-low edge triggered (invalid for SPIs)
+ 4 = active high level-sensitive
+ 8 = active low level-sensitive (invalid for SPIs).
+ bits[15:8] PPI interrupt cpu mask. Each bit corresponds to each of
+ the 8 possible cpus attached to the GIC. A bit set to '1' indicated
+ the interrupt is wired to that CPU. Only valid for PPI interrupts.
+ Also note that the configurability of PPI interrupts is IMPLEMENTATION
+ DEFINED and as such not guaranteed to be present (most SoC available
+ in 2014 seem to ignore the setting of this flag and use the hardware
+ default value).
+
+ reg:
+ description: |
+ Specifies base physical address(s) and size of the GIC registers. The
+ first region is the GIC distributor register base and size. The 2nd region
+ is the GIC cpu interface register base and size.
+
+ For GICv2 with virtualization extensions, additional regions are
+ required for specifying the base physical address and size of the VGIC
+ registers. The first additional region is the GIC virtual interface
+ control register base and size. The 2nd additional region is the GIC
+ virtual cpu interface register base and size.
+ minItems: 2
+ maxItems: 4
+
+ interrupts:
+ description: Interrupt source of the parent interrupt controller on
+ secondary GICs, or VGIC maintenance interrupt on primary GIC (see
+ below).
+ maxItems: 1
+
+ cpu-offset:
+ description: per-cpu offset within the distributor and cpu interface
+ regions, used when the GIC doesn't have banked registers. The offset
+ is cpu-offset * cpu-nr.
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+ clocks:
+ minItems: 1
+ maxItems: 2
+
+ clock-names:
+ description: List of names for the GIC clock input(s). Valid clock names
+ depend on the GIC variant.
+ oneOf:
+ - const: ic_clk # for "arm,arm11mp-gic"
+ - const: PERIPHCLKEN # for "arm,cortex-a15-gic"
+ - items: # for "arm,cortex-a9-gic"
+ - const: PERIPHCLK
+ - const: PERIPHCLKEN
+ - const: clk # for "arm,gic-400" and "nvidia,tegra210"
+ - const: gclk #for "arm,pl390"
+
+ power-domains:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+
+patternProperties:
+ "^v2m@[0-9a-f]+$":
+ description: |
+ * GICv2m extension for MSI/MSI-x support (Optional)
+
+ Certain revisions of GIC-400 supports MSI/MSI-x via V2M register frame(s).
+ This is enabled by specifying v2m sub-node(s).
+
+ properties:
+ compatible:
+ const: arm,gic-v2m-frame
+
+ msi-controller: true
+
+ reg:
+ maxItems: 1
+ description: GICv2m MSI interface register base and size
+
+ arm,msi-base-spi:
+ description: When the MSI_TYPER register contains an incorrect value,
+ this property should contain the SPI base of the MSI frame, overriding
+ the HW value.
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+ arm,msi-num-spis:
+ description: When the MSI_TYPER register contains an incorrect value,
+ this property should contain the number of SPIs assigned to the
+ frame, overriding the HW value.
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+ required:
+ - compatible
+ - msi-controller
+ - reg
+
+ additionalProperties: false
+
+additionalProperties: false
+
+examples:
+ - |
+ // GICv1
+ intc: interrupt-controller@...11000 {
+ compatible = "arm,cortex-a9-gic";
+ #interrupt-cells = <3>;
+ #address-cells = <1>;
+ interrupt-controller;
+ reg = <0xfff11000 0x1000>,
+ <0xfff10100 0x100>;
+ };
+
+ - |
+ // GICv2
+ interrupt-controller@...01000 {
+ compatible = "arm,cortex-a15-gic";
+ #interrupt-cells = <3>;
+ interrupt-controller;
+ reg = <0x2c001000 0x1000>,
+ <0x2c002000 0x2000>,
+ <0x2c004000 0x2000>,
+ <0x2c006000 0x2000>;
+ interrupts = <1 9 0xf04>;
+ };
+
+ - |
+ // GICv2m extension for MSI/MSI-x support
+ interrupt-controller@...01000 {
+ compatible = "arm,gic-400";
+ #interrupt-cells = <3>;
+ #address-cells = <2>;
+ #size-cells = <2>;
+ interrupt-controller;
+ interrupts = <1 8 0xf04>;
+ ranges = <0 0 0 0xe1100000 0 0x100000>;
+ reg = <0x0 0xe1110000 0 0x01000>,
+ <0x0 0xe112f000 0 0x02000>,
+ <0x0 0xe1140000 0 0x10000>,
+ <0x0 0xe1160000 0 0x10000>;
+
+ v2m0: v2m@...0 {
+ compatible = "arm,gic-v2m-frame";
+ msi-controller;
+ reg = <0x0 0x80000 0 0x1000>;
+ };
+
+ //...
+
+ v2mN: v2m@...0 {
+ compatible = "arm,gic-v2m-frame";
+ msi-controller;
+ reg = <0x0 0x90000 0 0x1000>;
+ };
+ };
+...
--
2.19.1
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