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dt-bindings: watchdog: Add watchdog yaml file for Sunplus SP7021

This adds the documentation for the devicetree bindings of the Sunplus
SP7021 watchdog driver, found from SP7021 SoCs and newer.

Signed-off-by: Xiantao Hu <xt.hu@cqplus1.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220324031805.61316-2-xt.hu@cqplus1.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

authored by

Xiantao Hu and committed by
Wim Van Sebroeck 94e4a7d5 5794dda1

+53
+47
Documentation/devicetree/bindings/watchdog/sunplus,sp7021-wdt.yaml
··· 1 + # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2 + # Copyright (C) Sunplus Co., Ltd. 2021 3 + %YAML 1.2 4 + --- 5 + $id: http://devicetree.org/schemas/watchdog/sunplus,sp7021-wdt.yaml# 6 + $schema: http://devicetree.org/meta-schemas/core.yaml# 7 + 8 + title: Sunplus SoCs Watchdog 9 + 10 + maintainers: 11 + - XianTao Hu <xt.hu@cqplus1.com> 12 + 13 + allOf: 14 + - $ref: watchdog.yaml# 15 + 16 + properties: 17 + compatible: 18 + const: sunplus,sp7021-wdt 19 + 20 + reg: 21 + items: 22 + - description: watchdog registers regions 23 + - description: miscellaneous control registers regions 24 + 25 + clocks: 26 + maxItems: 1 27 + 28 + resets: 29 + maxItems: 1 30 + 31 + required: 32 + - compatible 33 + - reg 34 + - clocks 35 + - resets 36 + 37 + additionalProperties: false 38 + 39 + examples: 40 + - | 41 + watchdog: watchdog@9c000630 { 42 + compatible = "sunplus,sp7021-wdt"; 43 + reg = <0x9c000630 0x08>, <0x9c000274 0x04>; 44 + clocks = <&clkc 0x24>; 45 + resets = <&rstc 0x14>; 46 + }; 47 + ...
+6
MAINTAINERS
··· 18902 18902 F: Documentation/devicetree/bindings/serial/sunplus,sp7021-uart.yaml 18903 18903 F: drivers/tty/serial/sunplus-uart.c 18904 18904 18905 + SUNPLUS WATCHDOG DRIVER 18906 + M: Xiantao Hu <xt.hu@cqplus1.com> 18907 + L: linux-watchdog@vger.kernel.org 18908 + S: Maintained 18909 + F: Documentation/devicetree/bindings/watchdog/sunplus,sp7021-wdt.yaml 18910 + 18905 18911 SUPERH 18906 18912 M: Yoshinori Sato <ysato@users.sourceforge.jp> 18907 18913 M: Rich Felker <dalias@libc.org>