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Tue, 09 Apr 2024 02:40:40 -0700 (PDT) Received: from [192.168.1.20] ([178.197.223.16]) by smtp.gmail.com with ESMTPSA id m28-20020adfa3dc000000b003435e1c0b78sm11106758wrb.28.2024.04.09.02.40.38 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 09 Apr 2024 02:40:40 -0700 (PDT) Message-ID: Date: Tue, 9 Apr 2024 11:40:38 +0200 Precedence: bulk X-Mailing-List: linux-rtc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 3/9] dt-bindings: rtc: lpc32xx-rtc: move to trivial-rtc To: Javier Carrasco , Alexandre Belloni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jiaxun Yang , Vladimir Zapolskiy , Joel Stanley , Andrew Jeffery , Maxime Coquelin , Alexandre Torgue Cc: linux-rtc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-stm32@st-md-mailman.stormreply.com References: <20240408-rtc_dtschema-v1-0-c447542fc362@gmail.com> <20240408-rtc_dtschema-v1-3-c447542fc362@gmail.com> <6dc808bf-682f-4e91-aac7-7ce6f05a0ab4@gmail.com> Content-Language: en-US From: Krzysztof Kozlowski Autocrypt: addr=krzysztof.kozlowski@linaro.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 09/04/2024 10:52, Javier Carrasco wrote: > On 4/9/24 09:34, Krzysztof Kozlowski wrote: >> On 08/04/2024 17:53, Javier Carrasco wrote: >>> This RTC requires a compatible, a reg and a single interrupt, >>> which makes it suitable for a direct conversion into trivial-rtc. >>> >>> Signed-off-by: Javier Carrasco >>> --- >>> Documentation/devicetree/bindings/rtc/lpc32xx-rtc.txt | 15 --------------- >>> Documentation/devicetree/bindings/rtc/trivial-rtc.yaml | 2 ++ >>> 2 files changed, 2 insertions(+), 15 deletions(-) >> >> This one no... and if you tested DTS you would see errors, although you >> need to test specific lpc config, not multi_v7. >> >> It does not look like you tested the DTS against bindings. Please run >> `make dtbs_check W=1` (see >> Documentation/devicetree/bindings/writing-schema.rst or >> https://www.linaro.org/blog/tips-and-tricks-for-validating-devicetree-sources-with-the-devicetree-schema/ >> for instructions). >> >> Anyway, you *must* check all DTS before moving anything to trivial. >> >> Does it mean all other bindings were not checked against DTS at all? >> >> Best regards, >> Krzysztof >> > Hi, > > I did check the conversion against nxp/lpc/lpc3250-phy3250.dts, which > throws a message about the 'clocks' property. > > That property is not documented in the original binding, and even though > it could be missing, I could not find any function to get a clock (i.e. Old bindings are not really accurate. > any form of clk_get()) in rtc-lpc32xx.c, which is the only file where > the compatible can be found. > > Is therefore the property not useless in the dts? My apologies if I am > missing something here. Useless for whom? For Linux yes. For U-Boot or out-of-tree users of DTS, I don't know. Anyway the true question is if there is a clock or there is no. If there is a clock, then it should be in the binding even if Linux driver does not use it. I propose to add it and be done with it. Best regards, Krzysztof