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a99163e9e7
- Sync dtc to upstream version v1.6.0-51-g183df9e9c2b9 and build host fdtoverlay - Add kbuild support to build DT overlays (%.dtbo) - Drop NULLifying match table in of_match_device(). In preparation for this, there are several driver cleanups to use (of_)?device_get_match_data(). - Drop pointless wrappers from DT struct device API - Convert USB binding schemas to use graph schema and remove old plain text graph binding doc - Convert spi-nor and v3d GPU bindings to DT schema - Tree wide schema fixes for if/then schemas, array size constraints, and undocumented compatible strings in examples - Handle 'no-map' correctly for already reserved memblock regions -----BEGIN PGP SIGNATURE----- iQJEBAABCgAuFiEEktVUI4SxYhzZyEuo+vtdtY28YcMFAmAz1GEQHHJvYmhAa2Vy bmVsLm9yZwAKCRD6+121jbxhw55/D/955O2f5Gjp7bXvdoSucZtks/lqlC/eIAAw An5pjBL+o1urXsvafEMYemwmnwq/U4vy0aJRoAK1+MiI4masb56ET0KN5LsOudki b3M/O16RqGF31+blWyoxseZnZh6KsKzIRoE5XAtbr/QAnpdI0/5BgGoWSWYtDk2v LddL650/BieyvzdnFTLWCMAxd6DW0P9SI+8N3E+XlxAWCYQrLCqVELHbkrxAGCuN CggHIIiNf2K7z4UopVsGjnUwML9YRHXc9wOpF1c4CBrLu9TfDvdQ4OnNcnxcl/Sp E2FTHG0jSVm3VJRBbk4e68uvt3HrJJWsYnMtu2QTweGC/GbeUr9LJ0MIbSwp+rsL FEqCMFWOniq27eJBk6jHckaoBl93AHQlIGdJR/pFAi9Ijt32tUdVG5kqD/Tl+xKm njPcjVjWilr2ssfZ4tUggzPp2fjrau88ZS8qLja31vElzvULeA67KjEtG0RZAtwg ywfATiCaT096pR9v2VYuL/5NNnZFxHx3hWsOH1rcsyPk0BLguU3dkrAn28XBVQFd cOPfR3T/wsT0wHDht2aXPSM0hBiejFmvLhebGuJN9lqG+Pc1f87xiCT3pM7wymtJ iqTMrQ7dUgjQgU91PjatdB17tlnGHe0hh8AiuhQoPgOprpRKszG+rBFJLG3yRnl7 QmLZnQTIhw== =9V4A -----END PGP SIGNATURE----- Merge tag 'devicetree-for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree updates from Rob Herring: - Sync dtc to upstream version v1.6.0-51-g183df9e9c2b9 and build host fdtoverlay - Add kbuild support to build DT overlays (%.dtbo) - Drop NULLifying match table in of_match_device(). In preparation for this, there are several driver cleanups to use (of_)?device_get_match_data(). - Drop pointless wrappers from DT struct device API - Convert USB binding schemas to use graph schema and remove old plain text graph binding doc - Convert spi-nor and v3d GPU bindings to DT schema - Tree wide schema fixes for if/then schemas, array size constraints, and undocumented compatible strings in examples - Handle 'no-map' correctly for already reserved memblock regions * tag 'devicetree-for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (35 commits) driver core: platform: Drop of_device_node_put() wrapper of: Remove of_dev_{get,put}() dt-bindings: usb: Change descibe to describe in usbmisc-imx.txt dt-bindings: can: rcar_canfd: Group tuples in pin control properties dt-bindings: power: renesas,apmu: Group tuples in cpus properties dt-bindings: mtd: spi-nor: Convert to DT schema format dt-bindings: Use portable sort for version cmp dt-bindings: ethernet-controller: fix fixed-link specification dt-bindings: irqchip: Add node name to PRUSS INTC dt-bindings: interconnect: Fix the expected number of cells dt-bindings: Fix errors in 'if' schemas dt-bindings: iommu: renesas,ipmmu-vmsa: Make 'power-domains' conditionally required dt-bindings: Fix undocumented compatible strings in examples kbuild: Add support to build overlays (%.dtbo) scripts: dtc: Remove the unused fdtdump.c file scripts: dtc: Build fdtoverlay tool scripts/dtc: Update to upstream version v1.6.0-51-g183df9e9c2b9 scripts: dtc: Fetch fdtoverlay.c from external DTC project dt-bindings: thermal: sun8i: Fix misplaced schema keyword in compatible strings dt-bindings: iio: dac: Fix AD5686 references ...
151 lines
4 KiB
YAML
151 lines
4 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/net/ti,k3-am654-cpts.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: The TI AM654x/J721E Common Platform Time Sync (CPTS) module Device Tree Bindings
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maintainers:
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- Grygorii Strashko <grygorii.strashko@ti.com>
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- Sekhar Nori <nsekhar@ti.com>
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description: |+
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The TI AM654x/J721E CPTS module is used to facilitate host control of time
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sync operations.
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Main features of CPTS module are
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- selection of multiple external clock sources
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- Software control of time sync events via interrupt or polling
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- 64-bit timestamp mode in ns with PPM and nudge adjustment.
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- hardware timestamp push inputs (HWx_TS_PUSH)
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- timestamp counter compare output (TS_COMP)
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- timestamp counter bit output (TS_SYNC)
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- periodic Generator function outputs (TS_GENFx)
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- Ethernet Enhanced Scheduled Traffic Operations (CPTS_ESTFn) (TSN)
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- external hardware timestamp push inputs (HWx_TS_PUSH) timestamping
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Depending on integration it enables compliance with the IEEE 1588-2008
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standard for a precision clock synchronization protocol, Ethernet Enhanced
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Scheduled Traffic Operations (CPTS_ESTFn) and PCIe Subsystem Precision Time
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Measurement (PTM).
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TI AM654x/J721E SoCs has several similar CPTS modules integrated into the
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different parts of the system which could be synchronized with each other
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- Main CPTS
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- MCU CPSW CPTS with IEEE 1588-2008 support
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- PCIe subsystem CPTS for PTM support
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Depending on CPTS module integration and when CPTS is integral part of
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another module (MCU CPSW for example) "compatible" and "reg" can
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be omitted - parent module is fully responsible for CPTS enabling and
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configuration.
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properties:
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$nodename:
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pattern: "^cpts@[0-9a-f]+$"
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compatible:
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oneOf:
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- const: ti,am65-cpts
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- const: ti,j721e-cpts
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reg:
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maxItems: 1
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description:
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The physical base address and size of CPTS IO range
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reg-names:
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items:
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- const: cpts
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clocks:
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maxItems: 1
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description: CPTS reference clock
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clock-names:
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items:
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- const: cpts
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interrupts:
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items:
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- description: CPTS events interrupt
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interrupt-names:
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items:
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- const: cpts
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assigned-clock-parents: true
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assigned-clocks: true
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power-domains:
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maxItems: 1
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ti,cpts-ext-ts-inputs:
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$ref: /schemas/types.yaml#/definitions/uint32
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maximum: 8
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description:
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Number of hardware timestamp push inputs (HWx_TS_PUSH)
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ti,cpts-periodic-outputs:
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$ref: /schemas/types.yaml#/definitions/uint32
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maximum: 8
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description:
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Number of timestamp Generator function outputs (TS_GENFx)
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refclk-mux:
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type: object
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description: CPTS reference clock multiplexer clock
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properties:
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'#clock-cells':
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const: 0
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clocks:
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maxItems: 8
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assigned-clocks:
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maxItems: 1
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assigned-clocks-parents:
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maxItems: 1
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required:
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- clocks
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required:
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- compatible
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- reg
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- clocks
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- clock-names
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- interrupts
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- interrupt-names
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.h>
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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cpts@310d0000 {
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compatible = "ti,am65-cpts";
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reg = <0x310d0000 0x400>;
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reg-names = "cpts";
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clocks = <&main_cpts_mux>;
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clock-names = "cpts";
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interrupts-extended = <&k3_irq 163 0 IRQ_TYPE_LEVEL_HIGH>;
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interrupt-names = "cpts";
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ti,cpts-periodic-outputs = <6>;
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ti,cpts-ext-ts-inputs = <8>;
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main_cpts_mux: refclk-mux {
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#clock-cells = <0>;
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clocks = <&k3_clks 118 5>, <&k3_clks 118 11>,
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<&k3_clks 157 91>, <&k3_clks 157 77>,
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<&k3_clks 157 102>, <&k3_clks 157 80>,
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<&k3_clks 120 3>, <&k3_clks 121 3>;
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assigned-clocks = <&main_cpts_mux>;
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assigned-clock-parents = <&k3_clks 118 11>;
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};
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};
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