target/linux/starfive/patches-6.1/0104-dt-bindings-watchdog-Add-watchdog-for-StarFive-JH710.patch

   1 From 8559b2db6aecbee62cf9e02c17349379d72edcfb Mon Sep 17 00:00:00 2001
   2 From: Xingyu Wu <xingyu.wu@starfivetech.com>
   3 Date: Tue, 14 Mar 2023 21:24:35 +0800
   4 Subject: [PATCH 104/122] dt-bindings: watchdog: Add watchdog for StarFive
   5  JH7100 and JH7110
   6
   7 Add bindings to describe the watchdog for the StarFive JH7100/JH7110 SoC.
   8 And Use JH7100 as first StarFive SoC with watchdog.
   9
  10 Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>
  11 Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
  12 Reviewed-by: Guenter Roeck <linux@roeck-us.net>
  13 ---
  14  .../watchdog/starfive,jh7100-wdt.yaml         | 71 +++++++++++++++++++
  15  1 file changed, 71 insertions(+)
  16  create mode 100644 Documentation/devicetree/bindings/watchdog/starfive,jh7100-wdt.yaml
  17
  18 --- /dev/null
  19 +++ b/Documentation/devicetree/bindings/watchdog/starfive,jh7100-wdt.yaml
  20 @@ -0,0 +1,71 @@
  21 +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
  22 +%YAML 1.2
  23 +---
  24 +$id: http://devicetree.org/schemas/watchdog/starfive,jh7100-wdt.yaml#
  25 +$schema: http://devicetree.org/meta-schemas/core.yaml#
  26 +
  27 +title: StarFive Watchdog for JH7100 and JH7110 SoC
  28 +
  29 +maintainers:
  30 +  - Xingyu Wu <xingyu.wu@starfivetech.com>
  31 +  - Samin Guo <samin.guo@starfivetech.com>
  32 +
  33 +description:
  34 +  The JH7100 and JH7110 watchdog both are 32 bit counters. JH7100 watchdog
  35 +  has only one timeout phase and reboots. And JH7110 watchdog has two
  36 +  timeout phases. At the first phase, the signal of watchdog interrupt
  37 +  output(WDOGINT) will rise when counter is 0. The counter will reload
  38 +  the timeout value. And then, if counter decreases to 0 again and WDOGINT
  39 +  isn't cleared, the watchdog will reset the system unless the watchdog
  40 +  reset is disabled.
  41 +
  42 +allOf:
  43 +  - $ref: watchdog.yaml#
  44 +
  45 +properties:
  46 +  compatible:
  47 +    enum:
  48 +      - starfive,jh7100-wdt
  49 +      - starfive,jh7110-wdt
  50 +
  51 +  reg:
  52 +    maxItems: 1
  53 +
  54 +  interrupts:
  55 +    maxItems: 1
  56 +
  57 +  clocks:
  58 +    items:
  59 +      - description: APB clock
  60 +      - description: Core clock
  61 +
  62 +  clock-names:
  63 +    items:
  64 +      - const: apb
  65 +      - const: core
  66 +
  67 +  resets:
  68 +    items:
  69 +      - description: APB reset
  70 +      - description: Core reset
  71 +
  72 +required:
  73 +  - compatible
  74 +  - reg
  75 +  - clocks
  76 +  - clock-names
  77 +  - resets
  78 +
  79 +unevaluatedProperties: false
  80 +
  81 +examples:
  82 +  - |
  83 +    watchdog@12480000 {
  84 +        compatible = "starfive,jh7100-wdt";
  85 +        reg = <0x12480000 0x10000>;
  86 +        clocks = <&clk 171>,
  87 +                 <&clk 172>;
  88 +        clock-names = "apb", "core";
  89 +        resets = <&rst 99>,
  90 +                 <&rst 100>;
  91 +    };