From: Robin Murphy <robin.murphy@arm.com> To: will@kernel.org, mark.rutland@arm.com, linux-arm-kernel@lists.infradead.org Cc: devicetree@vger.kernel.org, alisaidi@amazon.com, tsahee@amazon.com, harb@amperecomputing.com, tuanphan@os.amperecomputing.com, james.yang@arm.com, patrik.berglund@arm.com Subject: [PATCH v2.1 1/3] perf: Add Arm CMN-600 DT binding Date: Fri, 18 Sep 2020 19:24:09 +0100 [thread overview] Message-ID: <3647765303e8936d45a69fe7c1f92b8d1b45de4b.1600452762.git.robin.murphy@arm.com> (raw) In-Reply-To: <cover.1600357241.git.robin.murphy@arm.com> Document the requirements for the CMN-600 DT binding. The internal topology is almost entirely discoverable by walking a tree of ID registers, but sadly both the starting point for that walk and the exact format of those registers are configuration-dependent and not discoverable from some sane fixed location. Oh well. Signed-off-by: Robin Murphy <robin.murphy@arm.com> --- fix up $id as well, oops... .../devicetree/bindings/perf/arm,cmn.yaml | 57 +++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 Documentation/devicetree/bindings/perf/arm,cmn.yaml diff --git a/Documentation/devicetree/bindings/perf/arm,cmn.yaml b/Documentation/devicetree/bindings/perf/arm,cmn.yaml new file mode 100644 index 000000000000..e4fcc0de25e2 --- /dev/null +++ b/Documentation/devicetree/bindings/perf/arm,cmn.yaml @@ -0,0 +1,57 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright 2020 Arm Ltd. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/perf/arm,cmn.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Arm CMN (Coherent Mesh Network) Performance Monitors + +maintainers: + - Robin Murphy <robin.murphy@arm.com> + +properties: + compatible: + const: arm,cmn-600 + + reg: + items: + - description: Physical address of the base (PERIPHBASE) and + size (up to 64MB) of the configuration address space. + + interrupts: + minItems: 1 + maxItems: 4 + items: + - description: Overflow interrupt for DTC0 + - description: Overflow interrupt for DTC1 + - description: Overflow interrupt for DTC2 + - description: Overflow interrupt for DTC3 + description: One interrupt for each DTC domain implemented must + be specified, in order. DTC0 is always present. + + arm,root-node: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Offset from PERIPHBASE of the configuration + discovery node (see TRM definition of ROOTNODEBASE). + +required: + - compatible + - reg + - interrupts + - arm,root-node + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/interrupt-controller/irq.h> + pmu@50000000 { + compatible = "arm,cmn-600"; + reg = <0x50000000 0x4000000>; + /* 4x2 mesh with one DTC, and CFG node at 0,1,1,0 */ + interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>; + arm,root-node = <0x104000>; + }; +... -- 2.28.0.dirty
WARNING: multiple messages have this Message-ID (diff)
From: Robin Murphy <robin.murphy@arm.com> To: will@kernel.org, mark.rutland@arm.com, linux-arm-kernel@lists.infradead.org Cc: devicetree@vger.kernel.org, patrik.berglund@arm.com, tuanphan@os.amperecomputing.com, tsahee@amazon.com, harb@amperecomputing.com, james.yang@arm.com, alisaidi@amazon.com Subject: [PATCH v2.1 1/3] perf: Add Arm CMN-600 DT binding Date: Fri, 18 Sep 2020 19:24:09 +0100 [thread overview] Message-ID: <3647765303e8936d45a69fe7c1f92b8d1b45de4b.1600452762.git.robin.murphy@arm.com> (raw) In-Reply-To: <cover.1600357241.git.robin.murphy@arm.com> Document the requirements for the CMN-600 DT binding. The internal topology is almost entirely discoverable by walking a tree of ID registers, but sadly both the starting point for that walk and the exact format of those registers are configuration-dependent and not discoverable from some sane fixed location. Oh well. Signed-off-by: Robin Murphy <robin.murphy@arm.com> --- fix up $id as well, oops... .../devicetree/bindings/perf/arm,cmn.yaml | 57 +++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 Documentation/devicetree/bindings/perf/arm,cmn.yaml diff --git a/Documentation/devicetree/bindings/perf/arm,cmn.yaml b/Documentation/devicetree/bindings/perf/arm,cmn.yaml new file mode 100644 index 000000000000..e4fcc0de25e2 --- /dev/null +++ b/Documentation/devicetree/bindings/perf/arm,cmn.yaml @@ -0,0 +1,57 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright 2020 Arm Ltd. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/perf/arm,cmn.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Arm CMN (Coherent Mesh Network) Performance Monitors + +maintainers: + - Robin Murphy <robin.murphy@arm.com> + +properties: + compatible: + const: arm,cmn-600 + + reg: + items: + - description: Physical address of the base (PERIPHBASE) and + size (up to 64MB) of the configuration address space. + + interrupts: + minItems: 1 + maxItems: 4 + items: + - description: Overflow interrupt for DTC0 + - description: Overflow interrupt for DTC1 + - description: Overflow interrupt for DTC2 + - description: Overflow interrupt for DTC3 + description: One interrupt for each DTC domain implemented must + be specified, in order. DTC0 is always present. + + arm,root-node: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Offset from PERIPHBASE of the configuration + discovery node (see TRM definition of ROOTNODEBASE). + +required: + - compatible + - reg + - interrupts + - arm,root-node + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/interrupt-controller/irq.h> + pmu@50000000 { + compatible = "arm,cmn-600"; + reg = <0x50000000 0x4000000>; + /* 4x2 mesh with one DTC, and CFG node at 0,1,1,0 */ + interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>; + arm,root-node = <0x104000>; + }; +... -- 2.28.0.dirty _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-09-18 18:24 UTC|newest] Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-09-18 13:28 [PATCH v2 0/3] Arm CMN-600 PMU driver Robin Murphy 2020-09-18 13:28 ` Robin Murphy 2020-09-18 13:28 ` [PATCH v2 1/3] perf: Add Arm CMN-600 DT binding Robin Murphy 2020-09-18 13:28 ` Robin Murphy 2020-09-18 17:31 ` Rob Herring 2020-09-18 17:31 ` Rob Herring 2020-09-18 13:28 ` [PATCH v2 2/3] perf: Add Arm CMN-600 PMU driver Robin Murphy 2020-09-18 13:28 ` Robin Murphy 2020-09-18 13:28 ` [RFC 3/3] perf/arm-cmn: Add debugfs topology info Robin Murphy 2020-09-18 13:28 ` Robin Murphy 2020-09-18 18:24 ` Robin Murphy [this message] 2020-09-18 18:24 ` [PATCH v2.1 1/3] perf: Add Arm CMN-600 DT binding Robin Murphy 2020-09-18 18:54 ` Rob Herring 2020-09-18 18:54 ` Rob Herring 2020-09-19 0:23 ` Robin Murphy 2020-09-19 0:23 ` Robin Murphy 2020-10-05 9:16 ` [PATCH v2 0/3] Arm CMN-600 PMU driver Zidenberg, Tsahi 2020-10-05 9:16 ` Zidenberg, Tsahi 2020-10-05 10:21 ` Will Deacon 2020-10-05 10:21 ` Will Deacon 2020-10-14 16:31 ` Robin Murphy 2020-10-14 16:31 ` Robin Murphy 2020-10-15 7:26 ` Zidenberg, Tsahi 2020-10-15 7:26 ` Zidenberg, Tsahi
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