pwm-sifive.yaml

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 # Copyright (C) 2020 SiFive, Inc.
    3 %YAML 1.2
    4 ---
    5 $id: http://devicetree.org/schemas/pwm/pwm-sifive.yaml#
    6 $schema: http://devicetree.org/meta-schemas/core.yaml#
    7 
    8 title: SiFive PWM controller
    9 
   10 maintainers:
   11   - Sagar Kadam <sagar.kadam@sifive.com>
   12   - Paul Walmsley <paul.walmsley@sifive.com>
   13 
   14 description:
   15   Unlike most other PWM controllers, the SiFive PWM controller currently
   16   only supports one period for all channels in the PWM. All PWMs need to
   17   run at the same period. The period also has significant restrictions on
   18   the values it can achieve, which the driver rounds to the nearest
   19   achievable period. PWM RTL that corresponds to the IP block version
   20   numbers can be found here -
   21 
   22   https://github.com/sifive/sifive-blocks/tree/master/src/main/scala/devices/pwm
   23 
   24 allOf:
   25   - $ref: pwm.yaml#
   26 
   27 properties:
   28   compatible:
   29     items:
   30       - enum:
   31           - sifive,fu540-c000-pwm
   32           - sifive,fu740-c000-pwm
   33       - const: sifive,pwm0
   34     description:
   35       Should be "sifive,<chip>-pwm" and "sifive,pwm<version>". Supported
   36       compatible strings are "sifive,fu540-c000-pwm" and
   37       "sifive,fu740-c000-pwm" for the SiFive PWM v0 as integrated onto the
   38       SiFive FU540 and FU740 chip respectively, and "sifive,pwm0" for the
   39       SiFive PWM v0 IP block with no chip integration tweaks.
   40       Please refer to sifive-blocks-ip-versioning.txt for details.
   41 
   42   reg:
   43     maxItems: 1
   44 
   45   clocks:
   46     maxItems: 1
   47 
   48   "#pwm-cells":
   49     const: 3
   50 
   51   interrupts:
   52     maxItems: 4
   53     description:
   54       Each PWM instance in FU540-C000 has 4 comparators. One interrupt per comparator.
   55 
   56 required:
   57   - compatible
   58   - reg
   59   - clocks
   60   - interrupts
   61 
   62 additionalProperties: false
   63 
   64 examples:
   65   - |
   66     pwm:  pwm@10020000 {
   67       compatible = "sifive,fu540-c000-pwm", "sifive,pwm0";
   68       reg = <0x10020000 0x1000>;
   69       clocks = <&tlclk>;
   70       interrupt-parent = <&plic>;
   71       interrupts = <42>, <43>, <44>, <45>;
   72       #pwm-cells = <3>;
   73     };

Cache object: b5e364ac4aa045ce288c2891daa4504b

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/pwm/pwm-sifive.yaml

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/pwm/pwm-sifive.yaml