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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-Network-Message-Id: 09f124e8-6982-4aa2-95ca-08d93256267d X-MS-Exchange-CrossTenant-AuthSource: CO6PR04MB7812.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Jun 2021 12:39:44.5051 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: +beQlTpK112/5GUJYTN3hZbH++RnzmMbKH2PA0GGzQNqiL+C7EM+4Xkz5c0XMQEg7PyIJ6HOXWQYWnobf14x1Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO6PR04MB7843 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org We add DT bindings documentation for the ACLINT MSWI and SSWI devices found on RISC-V SOCs. Signed-off-by: Anup Patel Reviewed-by: Bin Meng --- .../riscv,aclint-swi.yaml | 82 +++++++++++++++++++ 1 file changed, 82 insertions(+) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/riscv,aclint-swi.yaml diff --git a/Documentation/devicetree/bindings/interrupt-controller/riscv,aclint-swi.yaml b/Documentation/devicetree/bindings/interrupt-controller/riscv,aclint-swi.yaml new file mode 100644 index 000000000000..b74025542866 --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/riscv,aclint-swi.yaml @@ -0,0 +1,82 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/interrupt-controller/riscv,aclint-swi.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: RISC-V ACLINT Software Interrupt Devices + +maintainers: + - Anup Patel + +description: + RISC-V SOCs include an implementation of the M-level software interrupt + (MSWI) device and the S-level software interrupt (SSWI) device defined + in the RISC-V Advanced Core Local Interruptor (ACLINT) specification. + + The ACLINT MSWI and SSWI devices are documented in the RISC-V ACLINT + specification located at + https://github.com/riscv/riscv-aclint/blob/main/riscv-aclint.adoc. + + The ACLINT MSWI and SSWI devices directly connect to the M-level and + S-level software interrupt lines of various HARTs (or CPUs) respectively + so the RISC-V per-HART (or per-CPU) local interrupt controller is the + parent interrupt controller for the ACLINT MSWI and SSWI devices. + +allOf: + - $ref: /schemas/interrupt-controller.yaml# + +properties: + compatible: + items: + - enum: + - riscv,aclint-mswi + - riscv,aclint-sswi + + description: + Should be ",-aclint-mswi" and "riscv,aclint-mswi" OR + ",-aclint-sswi" and "riscv,aclint-sswi". + + reg: + maxItems: 1 + + "#interrupt-cells": + const: 0 + + interrupts-extended: + minItems: 1 + + interrupt-controller: true + +additionalProperties: false + +required: + - compatible + - reg + - interrupts-extended + - interrupt-controller + - "#interrupt-cells" + +examples: + - | + // Example 1 (RISC-V MSWI device used by Linux RISC-V NoMMU kernel): + + interrupt-controller@2000000 { + compatible = "riscv,aclint-mswi"; + interrupts-extended = <&cpu1intc 3 &cpu2intc 3 &cpu3intc 3 &cpu4intc 3>; + reg = <0x2000000 0x4000>; + interrupt-controller; + #interrupt-cells = <0>; + }; + + - | + // Example 2 (RISC-V SSWI device used by Linux RISC-V MMU kernel): + + interrupt-controller@2100000 { + compatible = "riscv,aclint-sswi"; + interrupts-extended = <&cpu1intc 1 &cpu2intc 1 &cpu3intc 1 &cpu4intc 1>; + reg = <0x2100000 0x4000>; + interrupt-controller; + #interrupt-cells = <0>; + }; +... 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-Network-Message-Id: 500a6c3e-0a3b-40b0-275e-08d932562dfe X-MS-Exchange-CrossTenant-AuthSource: CO6PR04MB7812.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Jun 2021 12:39:57.0828 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: VMfYPaFH8Pg2B8yLlmCDEjX0YsVNNajwKaGFgyP4C9Xjf1ZLEIie9ue5YD4PFnCdRPmy3XnzlFWvVMTIdiyfTQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO6PR04MB7857 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org We add DT bindings documentation for the ACLINT MTIMER device found on RISC-V SOCs. Signed-off-by: Anup Patel Reviewed-by: Bin Meng --- .../bindings/timer/riscv,aclint-mtimer.yaml | 55 +++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 Documentation/devicetree/bindings/timer/riscv,aclint-mtimer.yaml diff --git a/Documentation/devicetree/bindings/timer/riscv,aclint-mtimer.yaml b/Documentation/devicetree/bindings/timer/riscv,aclint-mtimer.yaml new file mode 100644 index 000000000000..1f467c869d44 --- /dev/null +++ b/Documentation/devicetree/bindings/timer/riscv,aclint-mtimer.yaml @@ -0,0 +1,55 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/timer/riscv,aclint-mtimer.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: RISC-V ACLINT M-level Timer + +maintainers: + - Anup Patel + +description: + RISC-V SOCs include an implementation of the M-level timer (MTIMER) defined + in the RISC-V Advanced Core Local Interruptor (ACLINT) specification. The + ACLINT MTIMER device is documented in the RISC-V ACLINT specification found + at https://github.com/riscv/riscv-aclint/blob/main/riscv-aclint.adoc. + + The ACLINT MTIMER device directly connects to the M-level timer interrupt + lines of various HARTs (or CPUs) so the RISC-V per-HART (or per-CPU) local + interrupt controller is the parent interrupt controller for the ACLINT + MTIMER device. + + The clock frequency of ACLINT is specified via "timebase-frequency" DT + property of "/cpus" DT node. The "timebase-frequency" DT property is + described in Documentation/devicetree/bindings/riscv/cpus.yaml + +properties: + compatible: + items: + - const: riscv,aclint-mtimer + + description: + Should be ",-aclint-mtimer" and "riscv,aclint-mtimer". + + reg: + maxItems: 1 + + interrupts-extended: + minItems: 1 + +additionalProperties: false + +required: + - compatible + - reg + - interrupts-extended + +examples: + - | + timer@2004000 { + compatible = "riscv,aclint-mtimer"; + interrupts-extended = <&cpu1intc 7 &cpu2intc 7 &cpu3intc 7 &cpu4intc 7>; + reg = <0x2004000 0x8000>; + }; +...