Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <e73cec19-9ac8-bee2-8c28-c7a40b929e53@linaro.org>
Date:   Fri, 28 Apr 2023 14:20:58 +0200
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101
 Thunderbird/102.10.0
Subject: Re: [PATCH 09/43] dt-bindings: watchdog: add DT bindings for Cirrus
 EP93x
Content-Language: en-US
To:     Nikita Shubin <nikita.shubin@maquefel.me>
Cc:     Arnd Bergmann <arnd@kernel.org>, Linus Walleij <linusw@kernel.org>,
        Alexander Sverdlin <alexander.sverdlin@gmail.com>,
        Wim Van Sebroeck <wim@linux-watchdog.org>,
        Guenter Roeck <linux@roeck-us.net>,
        Rob Herring <robh+dt@kernel.org>,
        linux-watchdog@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org
References: <20230424123522.18302-1-nikita.shubin@maquefel.me>
 <20230424123522.18302-10-nikita.shubin@maquefel.me>
 <00882340-477b-dc0b-d489-94efdf045f1c@linaro.org>
 <cb0b1779a8bd18212439f9baf70fdb183c9f0fc7.camel@maquefel.me>
From:   Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
In-Reply-To: <cb0b1779a8bd18212439f9baf70fdb183c9f0fc7.camel@maquefel.me>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Precedence: bulk

On 28/04/2023 16:33, Nikita Shubin wrote:
> Hello Krzysztof!
> 
> On Tue, 2023-04-25 at 11:31 +0200, Krzysztof Kozlowski wrote:
>> On 24/04/2023 14:34, Nikita Shubin wrote:
>>> This adds device tree bindings for the Cirrus Logic EP93xx
>>> watchdog block used in these SoCs.
>>>
>>> Signed-off-by: Nikita Shubin <nikita.shubin@maquefel.me>
>>> ---
>>>  .../bindings/watchdog/cirrus,ep93xx-wdt.yaml  | 38
>>> +++++++++++++++++++
>>>  1 file changed, 38 insertions(+)
>>>  create mode 100644
>>> Documentation/devicetree/bindings/watchdog/cirrus,ep93xx-wdt.yaml
>>>
>>> diff --git
>>> a/Documentation/devicetree/bindings/watchdog/cirrus,ep93xx-wdt.yaml
>>> b/Documentation/devicetree/bindings/watchdog/cirrus,ep93xx-wdt.yaml
>>> new file mode 100644
>>> index 000000000000..f39d6b14062d
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/watchdog/cirrus,ep93xx-
>>> wdt.yaml
>>> @@ -0,0 +1,38 @@
>>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>>> +%YAML 1.2
>>> +---
>>> +$id:
>>> http://devicetree.org/schemas/watchdog/cirrus,ep93xx-wdt.yaml#
>>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>>> +
>>> +title: Cirrus Logic EP93xx Watchdog Timer
>>
>> EP93xx is no EP9301. This does not match your compatible list. You
>> should probably list all of your devices. With or without
>> compatibility
>> between them (so with a generic fallback for example).
> 
> I will rename file to cirrus,ep9301-wdt.yaml, all ep93xx SoC family has
> the same watchdog, so there is now reason for other compatible i think.

You should always have dedicated compatibles, even if using one fallback.
https://elixir.bootlin.com/linux/v6.1-rc1/source/Documentation/devicetree/bindings/writing-bindings.rst#L42

Best regards,
Krzysztof